Merge pull request #2757 from calmh/newxdr

Use v2 of XDR package

Godeps/Godeps.json

@@ -11,15 +11,18 @@
 		},
 		{
 			"ImportPath": "github.com/calmh/du",
+			"Comment": "v1.0.0",
 			"Rev": "3c0690cca16228b97741327b1b6781397afbdb24"
 		},
 		{
 			"ImportPath": "github.com/calmh/luhn",
+			"Comment": "v1.0.0",
 			"Rev": "0c8388ff95fa92d4094011e5a04fc99dea3d1632"
 		},
 		{
 			"ImportPath": "github.com/calmh/xdr",
-			"Rev": "9eb3e1a622d9364deb39c831f7e5f164393d7e37"
+			"Comment": "v2.0.0",
+			"Rev": "b6e0c321c9b5b28ba5ee21e828323e4b982c6976"
 		},
 		{
 			"ImportPath": "github.com/golang/snappy",

Godeps/_workspace/src/github.com/calmh/xdr/README.md

@@ -6,7 +6,5 @@ xdr
 [![API Documentation](http://img.shields.io/badge/api-Godoc-blue.svg?style=flat)](http://godoc.org/github.com/calmh/xdr)
 [![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)](http://opensource.org/licenses/MIT)
 
-This is an XDR encoding/decoding library. It uses code generation and
-not reflection. It supports the IPDR bastardized XDR format when built
-with `-tags ipdr`.
-
+This is an XDR marshalling/unmarshalling library. It uses code generation and
+not reflection.

Godeps/_workspace/src/github.com/calmh/xdr/cmd/genxdr/main.go

@@ -36,31 +36,73 @@ type structInfo struct {
 	Fields []fieldInfo
 }
 
-var headerTpl = template.Must(template.New("header").Parse(`// ************************************************************
+func (i structInfo) SizeExpr() string {
+	var xdrSizes = map[string]int{
+		"int8":   4,
+		"uint8":  4,
+		"int16":  4,
+		"uint16": 4,
+		"int32":  4,
+		"uint32": 4,
+		"int64":  8,
+		"uint64": 8,
+		"int":    8,
+		"bool":   4,
+	}
+
+	var terms []string
+	nl := ""
+	for _, f := range i.Fields {
+		if size := xdrSizes[f.FieldType]; size > 0 {
+			if f.IsSlice {
+				terms = append(terms, nl+"4+len(o."+f.Name+")*"+strconv.Itoa(size))
+			} else {
+				terms = append(terms, strconv.Itoa(size))
+			}
+		} else {
+			switch f.FieldType {
+			case "string", "[]byte":
+				if f.IsSlice {
+					terms = append(terms, nl+"4+xdr.SizeOfSlice(o."+f.Name+")")
+				} else {
+					terms = append(terms, nl+"4+len(o."+f.Name+")+xdr.Padding(len(o."+f.Name+"))")
+				}
+			default:
+				if f.IsSlice {
+					terms = append(terms, nl+"4+xdr.SizeOfSlice(o."+f.Name+")")
+				} else {
+					terms = append(terms, nl+"o."+f.Name+".XDRSize()")
+				}
+			}
+		}
+		nl = "\n"
+	}
+	return strings.Join(terms, "+")
+}
+
+var headerData = `// ************************************************************
 // This file is automatically generated by genxdr. Do not edit.
 // ************************************************************
 
 package {{.Package}}
 
 import (
-	"bytes"
-	"io"
-
 	"github.com/calmh/xdr"
 )
-`))
+`
 
-var encodeTpl = template.Must(template.New("encoder").Parse(`
-func (o {{.TypeName}}) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+var encoderData = `
+func (o {{.Name}}) XDRSize() int {
+	return {{.SizeExpr}}
 }//+n
 
-func (o {{.TypeName}}) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+func (o {{.Name}}) MarshalXDR() ([]byte, error) {
+	buf:= make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }//+n
 
-func (o {{.TypeName}}) MustMarshalXDR() []byte {
+func (o {{.Name}}) MustMarshalXDR() []byte {
 	bs, err := o.MarshalXDR()
 	if err != nil {
 		panic(err)
@@ -68,141 +110,155 @@ func (o {{.TypeName}}) MustMarshalXDR() []byte {
 	return bs
 }//+n
 
-func (o {{.TypeName}}) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
+func (o {{.Name}}) MarshalXDRInto(m *xdr.Marshaller) error {
+	{{range $fi := .Fields}}
+		{{if $fi.IsSlice}}
+			{{template "marshalSlice" $fi}}
+		{{else}}
+			{{template "marshalValue" $fi}}
+		{{end}}
+	{{end}}
+	return m.Error
 }//+n
 
-func (o {{.TypeName}}) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	{{range $fieldInfo := .Fields}}
-		{{if not $fieldInfo.IsSlice}}
-			{{if ne $fieldInfo.Convert ""}}
-				xw.Write{{$fieldInfo.Encoder}}({{$fieldInfo.Convert}}(o.{{$fieldInfo.Name}}))
-			{{else if $fieldInfo.IsBasic}}
-				{{if ge $fieldInfo.Max 1}}
-					if l := len(o.{{$fieldInfo.Name}}); l > {{$fieldInfo.Max}} {
-						return xw.Tot(), xdr.ElementSizeExceeded("{{$fieldInfo.Name}}", l, {{$fieldInfo.Max}})
-					}
-				{{end}}
-				xw.Write{{$fieldInfo.Encoder}}(o.{{$fieldInfo.Name}})
-			{{else}}
-				_, err := o.{{$fieldInfo.Name}}.EncodeXDRInto(xw)
-				if err != nil {
-					return xw.Tot(), err
-				}
-			{{end}}
-		{{else}}
-			{{if ge $fieldInfo.Max 1}}
-				if l := len(o.{{$fieldInfo.Name}}); l > {{$fieldInfo.Max}} {
-					return xw.Tot(), xdr.ElementSizeExceeded("{{$fieldInfo.Name}}", l, {{$fieldInfo.Max}})
-				}
-			{{end}}
-			xw.WriteUint32(uint32(len(o.{{$fieldInfo.Name}})))
-			for i := range o.{{$fieldInfo.Name}} {
-			{{if ne $fieldInfo.Convert ""}}
-				xw.Write{{$fieldInfo.Encoder}}({{$fieldInfo.Convert}}(o.{{$fieldInfo.Name}}[i]))
-			{{else if $fieldInfo.IsBasic}}
-				xw.Write{{$fieldInfo.Encoder}}(o.{{$fieldInfo.Name}}[i])
-			{{else}}
-				_, err := o.{{$fieldInfo.Name}}[i].EncodeXDRInto(xw)
-				if err != nil {
-					return xw.Tot(), err
-				}
-			{{end}}
+{{define "marshalValue"}}
+	{{if ne .Convert ""}}
+		m.Marshal{{.Encoder}}({{.Convert}}(o.{{.Name}}))
+	{{else if .IsBasic}}
+		{{if ge .Max 1}}
+			if l := len(o.{{.Name}}); l > {{.Max}} {
+				return xdr.ElementSizeExceeded("{{.Name}}", l, {{.Max}})
 			}
 		{{end}}
+		m.Marshal{{.Encoder}}(o.{{.Name}})
+	{{else}}
+		if err := o.{{.Name}}.MarshalXDRInto(m); err != nil {
+			return err
+		}
 	{{end}}
-	return xw.Tot(), xw.Error()
-}//+n
+{{end}}
 
-func (o *{{.TypeName}}) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
-}//+n
+{{define "marshalSlice"}}
+	{{if ge .Max 1}}
+		if l := len(o.{{.Name}}); l > {{.Max}} {
+			return xdr.ElementSizeExceeded("{{.Name}}", l, {{.Max}})
+		}
+	{{end}}
+
+	m.MarshalUint32(uint32(len(o.{{.Name}})))
+	for i := range o.{{.Name}} {
+		{{if ne .Convert ""}}
+			m.Marshal{{.Encoder}}({{.Convert}}(o.{{.Name}}[i]))
+		{{else if .IsBasic}}
+			m.Marshal{{.Encoder}}(o.{{.Name}}[i])
+		{{else}}
+			if err := o.{{.Name}}[i].MarshalXDRInto(m); err != nil {
+				return err
+			}
+		{{end}}
+	}
+{{end}}
 
-func (o *{{.TypeName}}) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+func (o *{{.Name}}) UnmarshalXDR(bs []byte) error {
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
+}
+
+func (o *{{.Name}}) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	{{range $fi := .Fields}}
+		{{if $fi.IsSlice}}
+			{{template "unmarshalSlice" $fi}}
+		{{else}}
+			{{template "unmarshalValue" $fi}}
+		{{end}}
+	{{end}}
+	return u.Error
 }//+n
 
-func (o *{{.TypeName}}) DecodeXDRFrom(xr *xdr.Reader) error {
-	{{range $fieldInfo := .Fields}}
-		{{if not $fieldInfo.IsSlice}}
-			{{if ne $fieldInfo.Convert ""}}
-				o.{{$fieldInfo.Name}} = {{$fieldInfo.FieldType}}(xr.Read{{$fieldInfo.Encoder}}())
-			{{else if $fieldInfo.IsBasic}}
-				{{if ge $fieldInfo.Max 1}}
-					o.{{$fieldInfo.Name}} = xr.Read{{$fieldInfo.Encoder}}Max({{$fieldInfo.Max}})
-				{{else}}
-					o.{{$fieldInfo.Name}} = xr.Read{{$fieldInfo.Encoder}}()
-				{{end}}
-			{{else}}
-				(&o.{{$fieldInfo.Name}}).DecodeXDRFrom(xr)
-			{{end}}
+{{define "unmarshalValue"}}
+	{{if ne .Convert ""}}
+		o.{{.Name}} = {{.FieldType}}(u.Unmarshal{{.Encoder}}())
+	{{else if .IsBasic}}
+		{{if ge .Max 1}}
+			o.{{.Name}} = u.Unmarshal{{.Encoder}}Max({{.Max}})
 		{{else}}
-			_{{$fieldInfo.Name}}Size := int(xr.ReadUint32())
-			if _{{$fieldInfo.Name}}Size < 0 {
-				return xdr.ElementSizeExceeded("{{$fieldInfo.Name}}", _{{$fieldInfo.Name}}Size, {{$fieldInfo.Max}})
+			o.{{.Name}} = u.Unmarshal{{.Encoder}}()
+		{{end}}
+	{{else}}
+		(&o.{{.Name}}).UnmarshalXDRFrom(u)
+	{{end}}
+{{end}}
+
+{{define "unmarshalSlice"}}
+	_{{.Name}}Size := int(u.UnmarshalUint32())
+	if _{{.Name}}Size < 0 {
+		return xdr.ElementSizeExceeded("{{.Name}}", _{{.Name}}Size, {{.Max}})
+	} else if _{{.Name}}Size == 0 {
+		o.{{.Name}} = nil
+	} else {
+		{{if ge .Max 1}}
+			if _{{.Name}}Size > {{.Max}} {
+				return xdr.ElementSizeExceeded("{{.Name}}", _{{.Name}}Size, {{.Max}})
 			}
-			{{if ge $fieldInfo.Max 1}}
-				if _{{$fieldInfo.Name}}Size > {{$fieldInfo.Max}} {
-					return xdr.ElementSizeExceeded("{{$fieldInfo.Name}}", _{{$fieldInfo.Name}}Size, {{$fieldInfo.Max}})
-				}
+		{{end}}
+		if _{{.Name}}Size <= len(o.{{.Name}}) {
+			{{if eq .FieldType "string"}}
+				for i := _{{.Name}}Size; i < len(o.{{.Name}}); i++ { o.{{.Name}}[i] = "" }
 			{{end}}
-			o.{{$fieldInfo.Name}} = make([]{{$fieldInfo.FieldType}}, _{{$fieldInfo.Name}}Size)
-			for i := range o.{{$fieldInfo.Name}} {
-				{{if ne $fieldInfo.Convert ""}}
-					o.{{$fieldInfo.Name}}[i] = {{$fieldInfo.FieldType}}(xr.Read{{$fieldInfo.Encoder}}())
-				{{else if $fieldInfo.IsBasic}}
-					{{if ge $fieldInfo.Submax 1}}
-						o.{{$fieldInfo.Name}}[i] = xr.Read{{$fieldInfo.Encoder}}Max({{$fieldInfo.Submax}})
-					{{else}}
-						o.{{$fieldInfo.Name}}[i] = xr.Read{{$fieldInfo.Encoder}}()
-					{{end}}
+			{{if eq .FieldType "[]byte"}}
+				for i := _{{.Name}}Size; i < len(o.{{.Name}}); i++ { o.{{.Name}}[i] = nil }
+			{{end}}
+			o.{{.Name}} = o.{{.Name}}[:_{{.Name}}Size]
+		} else {
+			o.{{.Name}} = make([]{{.FieldType}}, _{{.Name}}Size)
+		}
+		for i := range o.{{.Name}} {
+			{{if ne .Convert ""}}
+				o.{{.Name}}[i] = {{.FieldType}}(u.Unmarshal{{.Encoder}}())
+			{{else if .IsBasic}}
+				{{if ge .Submax 1}}
+					o.{{.Name}}[i] = u.Unmarshal{{.Encoder}}Max({{.Submax}})
 				{{else}}
-					(&o.{{$fieldInfo.Name}}[i]).DecodeXDRFrom(xr)
+					o.{{.Name}}[i] = u.Unmarshal{{.Encoder}}()
 				{{end}}
-			}
-		{{end}}
-	{{end}}
-	return xr.Error()
-}`))
+			{{else}}
+				(&o.{{.Name}}[i]).UnmarshalXDRFrom(u)
+			{{end}}
+		}
+	}
+{{end}}
+`
+
+var (
+	encodeTpl = template.Must(template.New("encoder").Parse(encoderData))
+	headerTpl = template.Must(template.New("header").Parse(headerData))
+)
 
 var emptyTypeTpl = template.Must(template.New("encoder").Parse(`
-func (o {{.TypeName}}) EncodeXDR(w io.Writer) (int, error) {
-	return 0, nil
-}//+n
+func (o {{.Name}}) XDRSize() int {
+	return 0
+}
 
-func (o {{.TypeName}}) MarshalXDR() ([]byte, error) {
+func (o {{.Name}}) MarshalXDR() ([]byte, error) {
 	return nil, nil
 }//+n
 
-func (o {{.TypeName}}) MustMarshalXDR() []byte {
+func (o {{.Name}}) MustMarshalXDR() []byte {
 	return nil
 }//+n
 
-func (o {{.TypeName}}) AppendXDR(bs []byte) ([]byte, error) {
-	return bs, nil
-}//+n
-
-func (o {{.TypeName}}) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	return xw.Tot(), xw.Error()
+func (o {{.Name}}) MarshalXDRInto(m *xdr.Marshaller) error {
+	return nil
 }//+n
 
-func (o *{{.TypeName}}) DecodeXDR(r io.Reader) error {
+func (o *{{.Name}}) UnmarshalXDR(bs []byte) error {
 	return nil
 }//+n
 
-func (o *{{.TypeName}}) UnmarshalXDR(bs []byte) error {
+func (o *{{.Name}}) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
 	return nil
 }//+n
-
-func (o *{{.TypeName}}) DecodeXDRFrom(xr *xdr.Reader) error {
-	return xr.Error()
-}`))
+`))
 
 var maxRe = regexp.MustCompile(`(?:\Wmax:)(\d+)(?:\s*,\s*(\d+))?`)
 
@@ -286,7 +342,7 @@ func handleStruct(t *ast.StructType) []fieldInfo {
 				f = fieldInfo{
 					Name:      fn,
 					IsBasic:   true,
-					FieldType: tn,
+					FieldType: "[]" + tn,
 					Encoder:   enc.Encoder,
 					Convert:   enc.Type,
 					Max:       max1,
@@ -329,17 +385,14 @@ func handleStruct(t *ast.StructType) []fieldInfo {
 }
 
 func generateCode(output io.Writer, s structInfo) {
-	name := s.Name
-	fs := s.Fields
-
 	var buf bytes.Buffer
 	var err error
-	if len(fs) == 0 {
+	if len(s.Fields) == 0 {
 		// This is an empty type. We can create a quite simple codec for it.
-		err = emptyTypeTpl.Execute(&buf, map[string]interface{}{"TypeName": name})
+		err = emptyTypeTpl.Execute(&buf, s)
 	} else {
 		// Generate with the default template.
-		err = encodeTpl.Execute(&buf, map[string]interface{}{"TypeName": name, "Fields": fs})
+		err = encodeTpl.Execute(&buf, s)
 	}
 	if err != nil {
 		panic(err)
@@ -347,12 +400,7 @@ func generateCode(output io.Writer, s structInfo) {
 
 	bs := regexp.MustCompile(`(\s*\n)+`).ReplaceAll(buf.Bytes(), []byte("\n"))
 	bs = bytes.Replace(bs, []byte("//+n"), []byte("\n"), -1)
-
-	bs, err = format.Source(bs)
-	if err != nil {
-		panic(err)
-	}
-	fmt.Fprintln(output, string(bs))
+	output.Write(bs)
 }
 
 func uncamelize(s string) string {
@@ -384,46 +432,46 @@ func generateDiagram(output io.Writer, s structInfo) {
 		tn := f.FieldType
 		name := uncamelize(f.Name)
 
+		suffix := ""
 		if f.IsSlice {
 			fmt.Fprintf(output, "| %s |\n", center("Number of "+name, 61))
 			fmt.Fprintln(output, line)
+			suffix = " (n items)"
+			fmt.Fprintf(output, "/ %s /\n", center("", 61))
 		}
 		switch tn {
 		case "bool":
 			fmt.Fprintf(output, "| %s |V|\n", center(name+" (V=0 or 1)", 59))
-			fmt.Fprintln(output, line)
 		case "int16", "uint16":
-			fmt.Fprintf(output, "| %s | %s |\n", center("0x0000", 29), center(name, 29))
-			fmt.Fprintln(output, line)
+			fmt.Fprintf(output, "| %s | %s |\n", center("16 zero bits", 29), center(name, 29))
+		case "int8", "uint8":
+			fmt.Fprintf(output, "| %s | %s |\n", center("24 zero bits", 45), center(name, 13))
 		case "int32", "uint32":
-			fmt.Fprintf(output, "| %s |\n", center(name, 61))
-			fmt.Fprintln(output, line)
+			fmt.Fprintf(output, "| %s |\n", center(name+suffix, 61))
 		case "int64", "uint64":
 			fmt.Fprintf(output, "| %-61s |\n", "")
 			fmt.Fprintf(output, "+ %s +\n", center(name+" (64 bits)", 61))
 			fmt.Fprintf(output, "| %-61s |\n", "")
-			fmt.Fprintln(output, line)
-		case "string", "byte": // XXX We assume slice of byte!
-			fmt.Fprintf(output, "| %s |\n", center("Length of "+name, 61))
-			fmt.Fprintln(output, line)
+		case "string", "[]byte":
 			fmt.Fprintf(output, "/ %61s /\n", "")
-			fmt.Fprintf(output, "\\ %s \\\n", center(name+" (variable length)", 61))
+			fmt.Fprintf(output, "\\ %s \\\n", center(name+" (length + padded data)", 61))
 			fmt.Fprintf(output, "/ %61s /\n", "")
-			fmt.Fprintln(output, line)
 		default:
 			if f.IsSlice {
 				tn = "Zero or more " + tn + " Structures"
-				fmt.Fprintf(output, "/ %s /\n", center("", 61))
 				fmt.Fprintf(output, "\\ %s \\\n", center(tn, 61))
-				fmt.Fprintf(output, "/ %s /\n", center("", 61))
 			} else {
 				tn = tn + " Structure"
 				fmt.Fprintf(output, "/ %s /\n", center("", 61))
 				fmt.Fprintf(output, "\\ %s \\\n", center(tn, 61))
 				fmt.Fprintf(output, "/ %s /\n", center("", 61))
 			}
-			fmt.Fprintln(output, line)
 		}
+
+		if f.IsSlice {
+			fmt.Fprintf(output, "/ %s /\n", center("", 61))
+		}
+		fmt.Fprintln(output, line)
 	}
 	fmt.Fprintln(output)
 	fmt.Fprintln(output)
@@ -448,9 +496,9 @@ func generateXdr(output io.Writer, s structInfo) {
 		}
 
 		switch tn {
-		case "int16", "int32":
+		case "int8", "int16", "int32":
 			fmt.Fprintf(output, "\tint %s%s;\n", fn, suf)
-		case "uint16", "uint32":
+		case "uint8", "uint16", "uint32":
 			fmt.Fprintf(output, "\tunsigned int %s%s;\n", fn, suf)
 		case "int64":
 			fmt.Fprintf(output, "\thyper %s%s;\n", fn, suf)
@@ -458,7 +506,7 @@ func generateXdr(output io.Writer, s structInfo) {
 			fmt.Fprintf(output, "\tunsigned hyper %s%s;\n", fn, suf)
 		case "string":
 			fmt.Fprintf(output, "\tstring %s<%s>;\n", fn, l)
-		case "byte":
+		case "[]byte":
 			fmt.Fprintf(output, "\topaque %s<%s>;\n", fn, l)
 		default:
 			fmt.Fprintf(output, "\t%s %s%s;\n", tn, fn, suf)
@@ -510,6 +558,22 @@ func main() {
 	i := inspector(&structs)
 	ast.Inspect(f, i)
 
+	buf := new(bytes.Buffer)
+	headerTpl.Execute(buf, map[string]string{"Package": f.Name.Name})
+	for _, s := range structs {
+		fmt.Fprintf(buf, "\n/*\n\n")
+		generateDiagram(buf, s)
+		generateXdr(buf, s)
+		fmt.Fprintf(buf, "*/\n")
+		generateCode(buf, s)
+	}
+
+	bs, err := format.Source(buf.Bytes())
+	if err != nil {
+		log.Print(buf.String())
+		log.Fatal(err)
+	}
+
 	var output io.Writer = os.Stdout
 	if *outputFile != "" {
 		fd, err := os.Create(*outputFile)
@@ -518,13 +582,5 @@ func main() {
 		}
 		output = fd
 	}
-
-	headerTpl.Execute(output, map[string]string{"Package": f.Name.Name})
-	for _, s := range structs {
-		fmt.Fprintf(output, "\n/*\n\n")
-		generateDiagram(output, s)
-		generateXdr(output, s)
-		fmt.Fprintf(output, "*/\n")
-		generateCode(output, s)
-	}
+	output.Write(bs)
 }

Godeps/_workspace/src/github.com/calmh/xdr/common.go

@@ -0,0 +1,59 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+package xdr
+
+import (
+	"fmt"
+	"reflect"
+)
+
+var padBytes = []byte{0, 0, 0}
+
+// Pad returns the number of bytes that should be added to an item of length l
+// bytes to conform to the XDR padding standard. This function is used by the
+// generated marshalling code.
+func Padding(l int) int {
+	d := l % 4
+	if d == 0 {
+		return 0
+	}
+	return 4 - d
+}
+
+// ElementSizeExceeded returns an error describing the violated size
+// constraint. This function is used by the generated marshalling code.
+func ElementSizeExceeded(field string, size, limit int) error {
+	return fmt.Errorf("%s exceeds size limit; %d > %d", field, size, limit)
+}
+
+type XDRSizer interface {
+	XDRSize() int
+}
+
+// SizeOfSlice returns the XDR encoded size of the given []T. Supported types
+// for T are string, []byte and types implementing XDRSizer. SizeOfSlice
+// panics if the parameter is not a slice or if T is not one of the supported
+// types. This function is used by the generated marshalling code.
+func SizeOfSlice(ss interface{}) int {
+	l := 0
+	switch ss := ss.(type) {
+	case []string:
+		for _, s := range ss {
+			l += 4 + len(s) + Padding(len(s))
+		}
+
+	case [][]byte:
+		for _, s := range ss {
+			l += 4 + len(s) + Padding(len(s))
+		}
+
+	default:
+		v := reflect.ValueOf(ss)
+		for i := 0; i < v.Len(); i++ {
+			l += v.Index(i).Interface().(XDRSizer).XDRSize()
+		}
+	}
+
+	return l
+}

Godeps/_workspace/src/github.com/calmh/xdr/debug.go

@@ -1,16 +0,0 @@
-// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
-// is governed by an MIT-style license that can be found in the LICENSE file.
-
-package xdr
-
-import (
-	"log"
-	"os"
-)
-
-var (
-	debug = len(os.Getenv("XDRTRACE")) > 0
-	dl    = log.New(os.Stdout, "xdr: ", log.Lshortfile|log.Ltime|log.Lmicroseconds)
-)
-
-const maxDebugBytes = 32

Godeps/_workspace/src/github.com/calmh/xdr/doc.go

@@ -1,5 +1,5 @@
 // Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
 // is governed by an MIT-style license that can be found in the LICENSE file.
 
-// Package xdr implements an XDR (RFC 4506) encoder/decoder.
+// Package xdr implements an XDR (RFC 4506) marshaller/unmarshaller.
 package xdr

Godeps/_workspace/src/github.com/calmh/xdr/marshaller.go

@@ -0,0 +1,123 @@
+// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
+// is governed by an MIT-style license that can be found in the LICENSE file.
+
+package xdr
+
+import "io"
+
+// The Marshaller is a thin wrapper around a byte buffer. The buffer must be
+// of sufficient size to hold the complete marshalled object, or an
+// io.ErrShortBuffer error will result. The Marshal... methods don't
+// individually return an error - the intention is that multiple fields are
+// marshalled in rapid succession, followed by a check of the Error field on
+// the Marshaller.
+type Marshaller struct {
+	Data  []byte
+	Error error
+
+	offset int
+}
+
+// MarshalRaw copies the raw bytes to the buffer, without a size prefix or
+// padding. This is suitable for appending data already in XDR format from
+// another source.
+func (m *Marshaller) MarshalRaw(bs []byte) {
+	if m.Error != nil {
+		return
+	}
+	if len(m.Data) < m.offset+len(bs) {
+		m.Error = io.ErrShortBuffer
+		return
+	}
+
+	m.offset += copy(m.Data[m.offset:], bs)
+}
+
+// MarshalString appends the string to the buffer, with a size prefix and
+// correct padding.
+func (m *Marshaller) MarshalString(s string) {
+	if m.Error != nil {
+		return
+	}
+	if len(m.Data) < m.offset+4+len(s)+Padding(len(s)) {
+		m.Error = io.ErrShortBuffer
+		return
+	}
+
+	m.MarshalUint32(uint32(len(s)))
+	m.offset += copy(m.Data[m.offset:], s)
+	m.offset += copy(m.Data[m.offset:], padBytes[:Padding(len(s))])
+}
+
+// MarshalString appends the bytes to the buffer, with a size prefix and
+// correct padding.
+func (m *Marshaller) MarshalBytes(bs []byte) {
+	if m.Error != nil {
+		return
+	}
+	if len(m.Data) < m.offset+4+len(bs)+Padding(len(bs)) {
+		m.Error = io.ErrShortBuffer
+		return
+	}
+
+	m.MarshalUint32(uint32(len(bs)))
+	m.offset += copy(m.Data[m.offset:], bs)
+	m.offset += copy(m.Data[m.offset:], padBytes[:Padding(len(bs))])
+}
+
+// MarshalString appends the bool to the buffer, as an uint32.
+func (m *Marshaller) MarshalBool(v bool) {
+	if v {
+		m.MarshalUint8(1)
+	} else {
+		m.MarshalUint8(0)
+	}
+}
+
+// MarshalString appends the uint8 to the buffer, as an uint32.
+func (m *Marshaller) MarshalUint8(v uint8) {
+	m.MarshalUint32(uint32(v))
+}
+
+// MarshalString appends the uint16 to the buffer, as an uint32.
+func (m *Marshaller) MarshalUint16(v uint16) {
+	m.MarshalUint32(uint32(v))
+}
+
+// MarshalString appends the uint32 to the buffer.
+func (m *Marshaller) MarshalUint32(v uint32) {
+	if m.Error != nil {
+		return
+	}
+	if len(m.Data) < m.offset+4 {
+		m.Error = io.ErrShortBuffer
+		return
+	}
+
+	m.Data[m.offset+0] = byte(v >> 24)
+	m.Data[m.offset+1] = byte(v >> 16)
+	m.Data[m.offset+2] = byte(v >> 8)
+	m.Data[m.offset+3] = byte(v)
+	m.offset += 4
+}
+
+// MarshalString appends the uint64 to the buffer.
+func (m *Marshaller) MarshalUint64(v uint64) {
+	if m.Error != nil {
+		return
+	}
+	if len(m.Data) < m.offset+8 {
+		m.Error = io.ErrShortBuffer
+		return
+	}
+
+	m.Data[m.offset+0] = byte(v >> 56)
+	m.Data[m.offset+1] = byte(v >> 48)
+	m.Data[m.offset+2] = byte(v >> 40)
+	m.Data[m.offset+3] = byte(v >> 32)
+	m.Data[m.offset+4] = byte(v >> 24)
+	m.Data[m.offset+5] = byte(v >> 16)
+	m.Data[m.offset+6] = byte(v >> 8)
+	m.Data[m.offset+7] = byte(v)
+	m.offset += 8
+}

Godeps/_workspace/src/github.com/calmh/xdr/pad_ipdr.go

@@ -1,10 +0,0 @@
-// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
-// is governed by an MIT-style license that can be found in the LICENSE file.
-
-// +build ipdr
-
-package xdr
-
-func pad(l int) int {
-	return 0
-}

Godeps/_workspace/src/github.com/calmh/xdr/pad_xdr.go

@@ -1,14 +0,0 @@
-// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
-// is governed by an MIT-style license that can be found in the LICENSE file.
-
-// +build !ipdr
-
-package xdr
-
-func pad(l int) int {
-	d := l % 4
-	if d == 0 {
-		return 0
-	}
-	return 4 - d
-}

Godeps/_workspace/src/github.com/calmh/xdr/reader.go

@@ -1,171 +0,0 @@
-// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
-// All rights reserved. Use of this source code is governed by an MIT-style
-// license that can be found in the LICENSE file.
-
-package xdr
-
-import (
-	"fmt"
-	"io"
-	"reflect"
-	"unsafe"
-)
-
-type Reader struct {
-	r   io.Reader
-	err error
-	b   [8]byte
-}
-
-func NewReader(r io.Reader) *Reader {
-	return &Reader{
-		r: r,
-	}
-}
-
-func (r *Reader) ReadRaw(bs []byte) (int, error) {
-	if r.err != nil {
-		return 0, r.err
-	}
-
-	var n int
-	n, r.err = io.ReadFull(r.r, bs)
-	return n, r.err
-}
-
-func (r *Reader) ReadString() string {
-	return r.ReadStringMax(0)
-}
-
-func (r *Reader) ReadStringMax(max int) string {
-	buf := r.ReadBytesMaxInto(max, nil)
-	bh := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
-	sh := reflect.StringHeader{
-		Data: bh.Data,
-		Len:  bh.Len,
-	}
-	return *((*string)(unsafe.Pointer(&sh)))
-}
-
-func (r *Reader) ReadBytes() []byte {
-	return r.ReadBytesInto(nil)
-}
-
-func (r *Reader) ReadBytesMax(max int) []byte {
-	return r.ReadBytesMaxInto(max, nil)
-}
-
-func (r *Reader) ReadBytesInto(dst []byte) []byte {
-	return r.ReadBytesMaxInto(0, dst)
-}
-
-func (r *Reader) ReadBytesMaxInto(max int, dst []byte) []byte {
-	if r.err != nil {
-		return nil
-	}
-
-	l := int(r.ReadUint32())
-	if r.err != nil {
-		return nil
-	}
-	if l < 0 || max > 0 && l > max {
-		// l may be negative on 32 bit builds
-		r.err = ElementSizeExceeded("bytes field", l, max)
-		return nil
-	}
-
-	if fullLen := l + pad(l); fullLen > len(dst) {
-		dst = make([]byte, fullLen)
-	} else {
-		dst = dst[:fullLen]
-	}
-
-	var n int
-	n, r.err = io.ReadFull(r.r, dst)
-	if r.err != nil {
-		if debug {
-			dl.Printf("rd bytes (%d): %v", len(dst), r.err)
-		}
-		return nil
-	}
-
-	if debug {
-		if n > maxDebugBytes {
-			dl.Printf("rd bytes (%d): %x...", len(dst), dst[:maxDebugBytes])
-		} else {
-			dl.Printf("rd bytes (%d): %x", len(dst), dst)
-		}
-	}
-	return dst[:l]
-}
-
-func (r *Reader) ReadBool() bool {
-	return r.ReadUint8() != 0
-}
-
-func (r *Reader) ReadUint32() uint32 {
-	if r.err != nil {
-		return 0
-	}
-
-	_, r.err = io.ReadFull(r.r, r.b[:4])
-	if r.err != nil {
-		if debug {
-			dl.Printf("rd uint32: %v", r.err)
-		}
-		return 0
-	}
-
-	v := uint32(r.b[3]) | uint32(r.b[2])<<8 | uint32(r.b[1])<<16 | uint32(r.b[0])<<24
-
-	if debug {
-		dl.Printf("rd uint32=%d (0x%08x)", v, v)
-	}
-	return v
-}
-
-func (r *Reader) ReadUint64() uint64 {
-	if r.err != nil {
-		return 0
-	}
-
-	_, r.err = io.ReadFull(r.r, r.b[:8])
-	if r.err != nil {
-		if debug {
-			dl.Printf("rd uint64: %v", r.err)
-		}
-		return 0
-	}
-
-	v := uint64(r.b[7]) | uint64(r.b[6])<<8 | uint64(r.b[5])<<16 | uint64(r.b[4])<<24 |
-		uint64(r.b[3])<<32 | uint64(r.b[2])<<40 | uint64(r.b[1])<<48 | uint64(r.b[0])<<56
-
-	if debug {
-		dl.Printf("rd uint64=%d (0x%016x)", v, v)
-	}
-	return v
-}
-
-type XDRError struct {
-	op  string
-	err error
-}
-
-func (e XDRError) Error() string {
-	return "xdr " + e.op + ": " + e.err.Error()
-}
-
-func (e XDRError) IsEOF() bool {
-	return e.err == io.EOF
-}
-
-func (r *Reader) Error() error {
-	if r.err == nil {
-		return nil
-	}
-	return XDRError{"read", r.err}
-}
-
-func ElementSizeExceeded(field string, size, limit int) error {
-	return fmt.Errorf("%s exceeds size limit; %d > %d", field, size, limit)
-}

Godeps/_workspace/src/github.com/calmh/xdr/reader_ipdr.go

@@ -1,49 +0,0 @@
-// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
-// All rights reserved. Use of this source code is governed by an MIT-style
-// license that can be found in the LICENSE file.
-
-// +build ipdr
-
-package xdr
-
-import "io"
-
-func (r *Reader) ReadUint8() uint8 {
-	if r.err != nil {
-		return 0
-	}
-
-	_, r.err = io.ReadFull(r.r, r.b[:1])
-	if r.err != nil {
-		if debug {
-			dl.Printf("rd uint8: %v", r.err)
-		}
-		return 0
-	}
-
-	if debug {
-		dl.Printf("rd uint8=%d (0x%02x)", r.b[0], r.b[0])
-	}
-	return r.b[0]
-}
-
-func (r *Reader) ReadUint16() uint16 {
-	if r.err != nil {
-		return 0
-	}
-
-	_, r.err = io.ReadFull(r.r, r.b[:2])
-	if r.err != nil {
-		if debug {
-			dl.Printf("rd uint16: %v", r.err)
-		}
-		return 0
-	}
-
-	v := uint16(r.b[1]) | uint16(r.b[0])<<8
-
-	if debug {
-		dl.Printf("rd uint16=%d (0x%04x)", v, v)
-	}
-	return v
-}

Godeps/_workspace/src/github.com/calmh/xdr/reader_xdr.go

@@ -1,15 +0,0 @@
-// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
-// All rights reserved. Use of this source code is governed by an MIT-style
-// license that can be found in the LICENSE file.
-
-// +build !ipdr
-
-package xdr
-
-func (r *Reader) ReadUint8() uint8 {
-	return uint8(r.ReadUint32())
-}
-
-func (r *Reader) ReadUint16() uint16 {
-	return uint16(r.ReadUint32())
-}

Godeps/_workspace/src/github.com/calmh/xdr/unmarshal.go

@@ -0,0 +1,147 @@
+// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
+// All rights reserved. Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package xdr
+
+import (
+	"io"
+	"reflect"
+	"unsafe"
+)
+
+type Unmarshaller struct {
+	Error error
+	Data  []byte
+}
+
+func (u *Unmarshaller) UnmarshalRaw(l int) []byte {
+	if u.Error != nil {
+		return nil
+	}
+	if len(u.Data) < l {
+		u.Error = io.ErrUnexpectedEOF
+		return nil
+	}
+
+	v := u.Data[:l]
+	u.Data = u.Data[l:]
+
+	return v
+}
+
+func (u *Unmarshaller) UnmarshalString() string {
+	return u.UnmarshalStringMax(0)
+}
+
+func (u *Unmarshaller) UnmarshalStringMax(max int) string {
+	buf := u.UnmarshalBytesMax(max)
+	if len(buf) == 0 || u.Error != nil {
+		return ""
+	}
+
+	var v string
+	p := (*reflect.StringHeader)(unsafe.Pointer(&v))
+	p.Data = uintptr(unsafe.Pointer(&buf[0]))
+	p.Len = len(buf)
+	return v
+}
+
+func (u *Unmarshaller) UnmarshalBytes() []byte {
+	return u.UnmarshalBytesMax(0)
+}
+
+func (u *Unmarshaller) UnmarshalBytesMax(max int) []byte {
+	if u.Error != nil {
+		return nil
+	}
+	if len(u.Data) < 4 {
+		u.Error = io.ErrUnexpectedEOF
+		return nil
+	}
+
+	l := int(u.Data[3]) | int(u.Data[2])<<8 | int(u.Data[1])<<16 | int(u.Data[0])<<24
+	if l == 0 {
+		u.Data = u.Data[4:]
+		return nil
+	}
+	if l < 0 || max > 0 && l > max {
+		// l may be negative on 32 bit builds
+		u.Error = ElementSizeExceeded("bytes field", l, max)
+		return nil
+	}
+	if len(u.Data) < l+4 {
+		u.Error = io.ErrUnexpectedEOF
+		return nil
+	}
+
+	v := u.Data[4 : 4+l]
+	u.Data = u.Data[4+l+Padding(l):]
+
+	return v
+}
+
+func (u *Unmarshaller) UnmarshalBool() bool {
+	return u.UnmarshalUint8() != 0
+}
+
+func (u *Unmarshaller) UnmarshalUint8() uint8 {
+	if u.Error != nil {
+		return 0
+	}
+	if len(u.Data) < 4 {
+		u.Error = io.ErrUnexpectedEOF
+		return 0
+	}
+
+	v := uint8(u.Data[3])
+	u.Data = u.Data[4:]
+
+	return v
+}
+
+func (u *Unmarshaller) UnmarshalUint16() uint16 {
+	if u.Error != nil {
+		return 0
+	}
+	if len(u.Data) < 4 {
+		u.Error = io.ErrUnexpectedEOF
+		return 0
+	}
+
+	v := uint16(u.Data[3]) | uint16(u.Data[2])<<8
+	u.Data = u.Data[4:]
+
+	return v
+}
+
+func (u *Unmarshaller) UnmarshalUint32() uint32 {
+	if u.Error != nil {
+		return 0
+	}
+	if len(u.Data) < 4 {
+		u.Error = io.ErrUnexpectedEOF
+		return 0
+	}
+
+	v := uint32(u.Data[3]) | uint32(u.Data[2])<<8 | uint32(u.Data[1])<<16 | uint32(u.Data[0])<<24
+	u.Data = u.Data[4:]
+
+	return v
+}
+
+func (u *Unmarshaller) UnmarshalUint64() uint64 {
+	if u.Error != nil {
+		return 0
+	}
+	if len(u.Data) < 8 {
+		u.Error = io.ErrUnexpectedEOF
+		return 0
+	}
+
+	v := uint64(u.Data[7]) | uint64(u.Data[6])<<8 | uint64(u.Data[5])<<16 | uint64(u.Data[4])<<24 |
+		uint64(u.Data[3])<<32 | uint64(u.Data[2])<<40 | uint64(u.Data[1])<<48 | uint64(u.Data[0])<<56
+	u.Data = u.Data[8:]
+
+	return v
+}

Godeps/_workspace/src/github.com/calmh/xdr/writer.go

@@ -1,146 +0,0 @@
-// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
-// is governed by an MIT-style license that can be found in the LICENSE file.
-
-package xdr
-
-import (
-	"io"
-	"reflect"
-	"unsafe"
-)
-
-var padBytes = []byte{0, 0, 0}
-
-type Writer struct {
-	w   io.Writer
-	tot int
-	err error
-	b   [8]byte
-}
-
-type AppendWriter []byte
-
-func (w *AppendWriter) Write(bs []byte) (int, error) {
-	*w = append(*w, bs...)
-	return len(bs), nil
-}
-
-func NewWriter(w io.Writer) *Writer {
-	return &Writer{
-		w: w,
-	}
-}
-
-func (w *Writer) WriteRaw(bs []byte) (int, error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	var n int
-	n, w.err = w.w.Write(bs)
-	return n, w.err
-}
-
-func (w *Writer) WriteString(s string) (int, error) {
-	sh := *((*reflect.StringHeader)(unsafe.Pointer(&s)))
-	bh := reflect.SliceHeader{
-		Data: sh.Data,
-		Len:  sh.Len,
-		Cap:  sh.Len,
-	}
-	return w.WriteBytes(*(*[]byte)(unsafe.Pointer(&bh)))
-}
-
-func (w *Writer) WriteBytes(bs []byte) (int, error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	w.WriteUint32(uint32(len(bs)))
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	if debug {
-		if len(bs) > maxDebugBytes {
-			dl.Printf("wr bytes (%d): %x...", len(bs), bs[:maxDebugBytes])
-		} else {
-			dl.Printf("wr bytes (%d): %x", len(bs), bs)
-		}
-	}
-
-	var l, n int
-	n, w.err = w.w.Write(bs)
-	l += n
-
-	if p := pad(len(bs)); w.err == nil && p > 0 {
-		n, w.err = w.w.Write(padBytes[:p])
-		l += n
-	}
-
-	w.tot += l
-	return l, w.err
-}
-
-func (w *Writer) WriteBool(v bool) (int, error) {
-	if v {
-		return w.WriteUint8(1)
-	} else {
-		return w.WriteUint8(0)
-	}
-}
-
-func (w *Writer) WriteUint32(v uint32) (int, error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	if debug {
-		dl.Printf("wr uint32=%d", v)
-	}
-
-	w.b[0] = byte(v >> 24)
-	w.b[1] = byte(v >> 16)
-	w.b[2] = byte(v >> 8)
-	w.b[3] = byte(v)
-
-	var l int
-	l, w.err = w.w.Write(w.b[:4])
-	w.tot += l
-	return l, w.err
-}
-
-func (w *Writer) WriteUint64(v uint64) (int, error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	if debug {
-		dl.Printf("wr uint64=%d", v)
-	}
-
-	w.b[0] = byte(v >> 56)
-	w.b[1] = byte(v >> 48)
-	w.b[2] = byte(v >> 40)
-	w.b[3] = byte(v >> 32)
-	w.b[4] = byte(v >> 24)
-	w.b[5] = byte(v >> 16)
-	w.b[6] = byte(v >> 8)
-	w.b[7] = byte(v)
-
-	var l int
-	l, w.err = w.w.Write(w.b[:8])
-	w.tot += l
-	return l, w.err
-}
-
-func (w *Writer) Tot() int {
-	return w.tot
-}
-
-func (w *Writer) Error() error {
-	if w.err == nil {
-		return nil
-	}
-	return XDRError{"write", w.err}
-}

Godeps/_workspace/src/github.com/calmh/xdr/writer_ipdr.go

@@ -1,41 +0,0 @@
-// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
-// is governed by an MIT-style license that can be found in the LICENSE file.
-
-// +build ipdr
-
-package xdr
-
-func (w *Writer) WriteUint8(v uint8) (int, error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	if debug {
-		dl.Printf("wr uint8=%d", v)
-	}
-
-	w.b[0] = byte(v)
-
-	var l int
-	l, w.err = w.w.Write(w.b[:1])
-	w.tot += l
-	return l, w.err
-}
-
-func (w *Writer) WriteUint16(v uint16) (int, error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-
-	if debug {
-		dl.Printf("wr uint8=%d", v)
-	}
-
-	w.b[0] = byte(v >> 8)
-	w.b[1] = byte(v)
-
-	var l int
-	l, w.err = w.w.Write(w.b[:2])
-	w.tot += l
-	return l, w.err
-}

Godeps/_workspace/src/github.com/calmh/xdr/writer_xdr.go

@@ -1,14 +0,0 @@
-// Copyright (C) 2014 Jakob Borg. All rights reserved. Use of this source code
-// is governed by an MIT-style license that can be found in the LICENSE file.
-
-// +build !ipdr
-
-package xdr
-
-func (w *Writer) WriteUint8(v uint8) (int, error) {
-	return w.WriteUint32(uint32(v))
-}
-
-func (w *Writer) WriteUint16(v uint16) (int, error) {
-	return w.WriteUint32(uint32(v))
-}

Godeps/_workspace/src/github.com/syndtr/goleveldb/LICENSE

@@ -0,0 +1,24 @@
+Copyright 2012 Suryandaru Triandana <[email protected]>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Godeps/_workspace/src/github.com/vitrun/qart/LICENSE

@@ -0,0 +1,201 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
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+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
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+      where such license applies only to those patent claims licensable
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+      Contribution(s) alone or by combination of their Contribution(s)
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+   4. Redistribution. You may reproduce and distribute copies of the
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+
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+      (c) You must retain, in the Source form of any Derivative Works
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+
+      (d) If the Work includes a "NOTICE" text file as part of its
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+          include a readable copy of the attribution notices contained
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+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
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+          that such additional attribution notices cannot be construed
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
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+      file or class name and description of purpose be included on the
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+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

Godeps/_workspace/src/golang.org/x/crypto/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Godeps/_workspace/src/golang.org/x/crypto/PATENTS

@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.

Godeps/_workspace/src/golang.org/x/net/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Godeps/_workspace/src/golang.org/x/net/PATENTS

@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.

Godeps/_workspace/src/golang.org/x/net/ipv6/zsys_linux_mips64.go

@@ -0,0 +1,156 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+// +build linux,mips64
+
+package ipv6
+
+const (
+	sysIPV6_ADDRFORM       = 0x1
+	sysIPV6_2292PKTINFO    = 0x2
+	sysIPV6_2292HOPOPTS    = 0x3
+	sysIPV6_2292DSTOPTS    = 0x4
+	sysIPV6_2292RTHDR      = 0x5
+	sysIPV6_2292PKTOPTIONS = 0x6
+	sysIPV6_CHECKSUM       = 0x7
+	sysIPV6_2292HOPLIMIT   = 0x8
+	sysIPV6_NEXTHOP        = 0x9
+	sysIPV6_FLOWINFO       = 0xb
+
+	sysIPV6_UNICAST_HOPS        = 0x10
+	sysIPV6_MULTICAST_IF        = 0x11
+	sysIPV6_MULTICAST_HOPS      = 0x12
+	sysIPV6_MULTICAST_LOOP      = 0x13
+	sysIPV6_ADD_MEMBERSHIP      = 0x14
+	sysIPV6_DROP_MEMBERSHIP     = 0x15
+	sysMCAST_JOIN_GROUP         = 0x2a
+	sysMCAST_LEAVE_GROUP        = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP  = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+	sysMCAST_BLOCK_SOURCE       = 0x2b
+	sysMCAST_UNBLOCK_SOURCE     = 0x2c
+	sysMCAST_MSFILTER           = 0x30
+	sysIPV6_ROUTER_ALERT        = 0x16
+	sysIPV6_MTU_DISCOVER        = 0x17
+	sysIPV6_MTU                 = 0x18
+	sysIPV6_RECVERR             = 0x19
+	sysIPV6_V6ONLY              = 0x1a
+	sysIPV6_JOIN_ANYCAST        = 0x1b
+	sysIPV6_LEAVE_ANYCAST       = 0x1c
+
+	sysIPV6_FLOWLABEL_MGR = 0x20
+	sysIPV6_FLOWINFO_SEND = 0x21
+
+	sysIPV6_IPSEC_POLICY = 0x22
+	sysIPV6_XFRM_POLICY  = 0x23
+
+	sysIPV6_RECVPKTINFO  = 0x31
+	sysIPV6_PKTINFO      = 0x32
+	sysIPV6_RECVHOPLIMIT = 0x33
+	sysIPV6_HOPLIMIT     = 0x34
+	sysIPV6_RECVHOPOPTS  = 0x35
+	sysIPV6_HOPOPTS      = 0x36
+	sysIPV6_RTHDRDSTOPTS = 0x37
+	sysIPV6_RECVRTHDR    = 0x38
+	sysIPV6_RTHDR        = 0x39
+	sysIPV6_RECVDSTOPTS  = 0x3a
+	sysIPV6_DSTOPTS      = 0x3b
+	sysIPV6_RECVPATHMTU  = 0x3c
+	sysIPV6_PATHMTU      = 0x3d
+	sysIPV6_DONTFRAG     = 0x3e
+
+	sysIPV6_RECVTCLASS = 0x42
+	sysIPV6_TCLASS     = 0x43
+
+	sysIPV6_ADDR_PREFERENCES = 0x48
+
+	sysIPV6_PREFER_SRC_TMP            = 0x1
+	sysIPV6_PREFER_SRC_PUBLIC         = 0x2
+	sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+	sysIPV6_PREFER_SRC_COA            = 0x4
+	sysIPV6_PREFER_SRC_HOME           = 0x400
+	sysIPV6_PREFER_SRC_CGA            = 0x8
+	sysIPV6_PREFER_SRC_NONCGA         = 0x800
+
+	sysIPV6_MINHOPCOUNT = 0x49
+
+	sysIPV6_ORIGDSTADDR     = 0x4a
+	sysIPV6_RECVORIGDSTADDR = 0x4a
+	sysIPV6_TRANSPARENT     = 0x4b
+	sysIPV6_UNICAST_IF      = 0x4c
+
+	sysICMPV6_FILTER = 0x1
+
+	sysICMPV6_FILTER_BLOCK       = 0x1
+	sysICMPV6_FILTER_PASS        = 0x2
+	sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+	sysICMPV6_FILTER_PASSONLY    = 0x4
+
+	sysSizeofKernelSockaddrStorage = 0x80
+	sysSizeofSockaddrInet6         = 0x1c
+	sysSizeofInet6Pktinfo          = 0x14
+	sysSizeofIPv6Mtuinfo           = 0x20
+	sysSizeofIPv6FlowlabelReq      = 0x20
+
+	sysSizeofIPv6Mreq       = 0x14
+	sysSizeofGroupReq       = 0x88
+	sysSizeofGroupSourceReq = 0x108
+
+	sysSizeofICMPv6Filter = 0x20
+)
+
+type sysKernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sysSockaddrInet6 struct {
+	Family   uint16
+	Port     uint16
+	Flowinfo uint32
+	Addr     [16]byte /* in6_addr */
+	Scope_id uint32
+}
+
+type sysInet6Pktinfo struct {
+	Addr    [16]byte /* in6_addr */
+	Ifindex int32
+}
+
+type sysIPv6Mtuinfo struct {
+	Addr sysSockaddrInet6
+	Mtu  uint32
+}
+
+type sysIPv6FlowlabelReq struct {
+	Dst        [16]byte /* in6_addr */
+	Label      uint32
+	Action     uint8
+	Share      uint8
+	Flags      uint16
+	Expires    uint16
+	Linger     uint16
+	X__flr_pad uint32
+}
+
+type sysIPv6Mreq struct {
+	Multiaddr [16]byte /* in6_addr */
+	Ifindex   int32
+}
+
+type sysGroupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sysKernelSockaddrStorage
+}
+
+type sysGroupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sysKernelSockaddrStorage
+	Source    sysKernelSockaddrStorage
+}
+
+type sysICMPv6Filter struct {
+	Data [8]uint32
+}

Godeps/_workspace/src/golang.org/x/net/ipv6/zsys_linux_mips64le.go

@@ -0,0 +1,156 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+// +build linux,mips64le
+
+package ipv6
+
+const (
+	sysIPV6_ADDRFORM       = 0x1
+	sysIPV6_2292PKTINFO    = 0x2
+	sysIPV6_2292HOPOPTS    = 0x3
+	sysIPV6_2292DSTOPTS    = 0x4
+	sysIPV6_2292RTHDR      = 0x5
+	sysIPV6_2292PKTOPTIONS = 0x6
+	sysIPV6_CHECKSUM       = 0x7
+	sysIPV6_2292HOPLIMIT   = 0x8
+	sysIPV6_NEXTHOP        = 0x9
+	sysIPV6_FLOWINFO       = 0xb
+
+	sysIPV6_UNICAST_HOPS        = 0x10
+	sysIPV6_MULTICAST_IF        = 0x11
+	sysIPV6_MULTICAST_HOPS      = 0x12
+	sysIPV6_MULTICAST_LOOP      = 0x13
+	sysIPV6_ADD_MEMBERSHIP      = 0x14
+	sysIPV6_DROP_MEMBERSHIP     = 0x15
+	sysMCAST_JOIN_GROUP         = 0x2a
+	sysMCAST_LEAVE_GROUP        = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP  = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+	sysMCAST_BLOCK_SOURCE       = 0x2b
+	sysMCAST_UNBLOCK_SOURCE     = 0x2c
+	sysMCAST_MSFILTER           = 0x30
+	sysIPV6_ROUTER_ALERT        = 0x16
+	sysIPV6_MTU_DISCOVER        = 0x17
+	sysIPV6_MTU                 = 0x18
+	sysIPV6_RECVERR             = 0x19
+	sysIPV6_V6ONLY              = 0x1a
+	sysIPV6_JOIN_ANYCAST        = 0x1b
+	sysIPV6_LEAVE_ANYCAST       = 0x1c
+
+	sysIPV6_FLOWLABEL_MGR = 0x20
+	sysIPV6_FLOWINFO_SEND = 0x21
+
+	sysIPV6_IPSEC_POLICY = 0x22
+	sysIPV6_XFRM_POLICY  = 0x23
+
+	sysIPV6_RECVPKTINFO  = 0x31
+	sysIPV6_PKTINFO      = 0x32
+	sysIPV6_RECVHOPLIMIT = 0x33
+	sysIPV6_HOPLIMIT     = 0x34
+	sysIPV6_RECVHOPOPTS  = 0x35
+	sysIPV6_HOPOPTS      = 0x36
+	sysIPV6_RTHDRDSTOPTS = 0x37
+	sysIPV6_RECVRTHDR    = 0x38
+	sysIPV6_RTHDR        = 0x39
+	sysIPV6_RECVDSTOPTS  = 0x3a
+	sysIPV6_DSTOPTS      = 0x3b
+	sysIPV6_RECVPATHMTU  = 0x3c
+	sysIPV6_PATHMTU      = 0x3d
+	sysIPV6_DONTFRAG     = 0x3e
+
+	sysIPV6_RECVTCLASS = 0x42
+	sysIPV6_TCLASS     = 0x43
+
+	sysIPV6_ADDR_PREFERENCES = 0x48
+
+	sysIPV6_PREFER_SRC_TMP            = 0x1
+	sysIPV6_PREFER_SRC_PUBLIC         = 0x2
+	sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+	sysIPV6_PREFER_SRC_COA            = 0x4
+	sysIPV6_PREFER_SRC_HOME           = 0x400
+	sysIPV6_PREFER_SRC_CGA            = 0x8
+	sysIPV6_PREFER_SRC_NONCGA         = 0x800
+
+	sysIPV6_MINHOPCOUNT = 0x49
+
+	sysIPV6_ORIGDSTADDR     = 0x4a
+	sysIPV6_RECVORIGDSTADDR = 0x4a
+	sysIPV6_TRANSPARENT     = 0x4b
+	sysIPV6_UNICAST_IF      = 0x4c
+
+	sysICMPV6_FILTER = 0x1
+
+	sysICMPV6_FILTER_BLOCK       = 0x1
+	sysICMPV6_FILTER_PASS        = 0x2
+	sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+	sysICMPV6_FILTER_PASSONLY    = 0x4
+
+	sysSizeofKernelSockaddrStorage = 0x80
+	sysSizeofSockaddrInet6         = 0x1c
+	sysSizeofInet6Pktinfo          = 0x14
+	sysSizeofIPv6Mtuinfo           = 0x20
+	sysSizeofIPv6FlowlabelReq      = 0x20
+
+	sysSizeofIPv6Mreq       = 0x14
+	sysSizeofGroupReq       = 0x88
+	sysSizeofGroupSourceReq = 0x108
+
+	sysSizeofICMPv6Filter = 0x20
+)
+
+type sysKernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sysSockaddrInet6 struct {
+	Family   uint16
+	Port     uint16
+	Flowinfo uint32
+	Addr     [16]byte /* in6_addr */
+	Scope_id uint32
+}
+
+type sysInet6Pktinfo struct {
+	Addr    [16]byte /* in6_addr */
+	Ifindex int32
+}
+
+type sysIPv6Mtuinfo struct {
+	Addr sysSockaddrInet6
+	Mtu  uint32
+}
+
+type sysIPv6FlowlabelReq struct {
+	Dst        [16]byte /* in6_addr */
+	Label      uint32
+	Action     uint8
+	Share      uint8
+	Flags      uint16
+	Expires    uint16
+	Linger     uint16
+	X__flr_pad uint32
+}
+
+type sysIPv6Mreq struct {
+	Multiaddr [16]byte /* in6_addr */
+	Ifindex   int32
+}
+
+type sysGroupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sysKernelSockaddrStorage
+}
+
+type sysGroupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sysKernelSockaddrStorage
+	Source    sysKernelSockaddrStorage
+}
+
+type sysICMPv6Filter struct {
+	Data [8]uint32
+}

Godeps/_workspace/src/golang.org/x/text/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Godeps/_workspace/src/golang.org/x/text/PATENTS

@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.

lib/db/leveldb_dbinstance.go

@@ -267,7 +267,11 @@ func (db *Instance) withHave(folder, device []byte, truncate bool, fn Iterator)
 	defer dbi.Release()
 
 	for dbi.Next() {
-		f, err := unmarshalTrunc(dbi.Value(), truncate)
+		// The iterator function may keep a reference to the unmarshalled
+		// struct, which in turn references the buffer it was unmarshalled
+		// from. dbi.Value() just returns an internal slice that it reuses, so
+		// we need to copy it.
+		f, err := unmarshalTrunc(append([]byte{}, dbi.Value()...), truncate)
 		if err != nil {
 			panic(err)
 		}
@@ -287,7 +291,11 @@ func (db *Instance) withAllFolderTruncated(folder []byte, fn func(device []byte,
 	for dbi.Next() {
 		device := db.deviceKeyDevice(dbi.Key())
 		var f FileInfoTruncated
-		err := f.UnmarshalXDR(dbi.Value())
+		// The iterator function may keep a reference to the unmarshalled
+		// struct, which in turn references the buffer it was unmarshalled
+		// from. dbi.Value() just returns an internal slice that it reuses, so
+		// we need to copy it.
+		err := f.UnmarshalXDR(append([]byte{}, dbi.Value()...))
 		if err != nil {
 			panic(err)
 		}

lib/db/leveldb_xdr.go

@@ -5,9 +5,6 @@
 package db
 
 import (
-	"bytes"
-	"io"
-
 	"github.com/calmh/xdr"
 )
 
@@ -22,10 +19,8 @@ fileVersion Structure:
 \                       Vector Structure                        \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                       Length of device                        |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                   device (variable length)                    \
+\                 device (length + padded data)                 \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
@@ -37,13 +32,15 @@ struct fileVersion {
 
 */
 
-func (o fileVersion) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o fileVersion) XDRSize() int {
+	return o.version.XDRSize() +
+		4 + len(o.device) + xdr.Padding(len(o.device))
 }
 
 func (o fileVersion) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o fileVersion) MustMarshalXDR() []byte {
@@ -54,37 +51,22 @@ func (o fileVersion) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o fileVersion) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o fileVersion) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	_, err := o.version.EncodeXDRInto(xw)
-	if err != nil {
-		return xw.Tot(), err
+func (o fileVersion) MarshalXDRInto(m *xdr.Marshaller) error {
+	if err := o.version.MarshalXDRInto(m); err != nil {
+		return err
 	}
-	xw.WriteBytes(o.device)
-	return xw.Tot(), xw.Error()
-}
-
-func (o *fileVersion) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	m.MarshalBytes(o.device)
+	return m.Error
 }
 
 func (o *fileVersion) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *fileVersion) DecodeXDRFrom(xr *xdr.Reader) error {
-	(&o.version).DecodeXDRFrom(xr)
-	o.device = xr.ReadBytes()
-	return xr.Error()
+func (o *fileVersion) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	(&o.version).UnmarshalXDRFrom(u)
+	o.device = u.UnmarshalBytes()
+	return u.Error
 }
 
 /*
@@ -108,13 +90,14 @@ struct versionList {
 
 */
 
-func (o versionList) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o versionList) XDRSize() int {
+	return 4 + xdr.SizeOfSlice(o.versions)
 }
 
 func (o versionList) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o versionList) MustMarshalXDR() []byte {
@@ -125,43 +108,35 @@ func (o versionList) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o versionList) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o versionList) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	xw.WriteUint32(uint32(len(o.versions)))
+func (o versionList) MarshalXDRInto(m *xdr.Marshaller) error {
+	m.MarshalUint32(uint32(len(o.versions)))
 	for i := range o.versions {
-		_, err := o.versions[i].EncodeXDRInto(xw)
-		if err != nil {
-			return xw.Tot(), err
+		if err := o.versions[i].MarshalXDRInto(m); err != nil {
+			return err
 		}
 	}
-	return xw.Tot(), xw.Error()
-}
-
-func (o *versionList) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	return m.Error
 }
 
 func (o *versionList) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *versionList) DecodeXDRFrom(xr *xdr.Reader) error {
-	_versionsSize := int(xr.ReadUint32())
+func (o *versionList) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	_versionsSize := int(u.UnmarshalUint32())
 	if _versionsSize < 0 {
 		return xdr.ElementSizeExceeded("versions", _versionsSize, 0)
+	} else if _versionsSize == 0 {
+		o.versions = nil
+	} else {
+		if _versionsSize <= len(o.versions) {
+			o.versions = o.versions[:_versionsSize]
+		} else {
+			o.versions = make([]fileVersion, _versionsSize)
+		}
+		for i := range o.versions {
+			(&o.versions[i]).UnmarshalXDRFrom(u)
+		}
 	}
-	o.versions = make([]fileVersion, _versionsSize)
-	for i := range o.versions {
-		(&o.versions[i]).DecodeXDRFrom(xr)
-	}
-	return xr.Error()
+	return u.Error
 }

lib/db/truncated.go

@@ -7,8 +7,6 @@
 package db
 
 import (
-	"bytes"
-
 	"github.com/calmh/xdr"
 	"github.com/syncthing/syncthing/lib/protocol"
 )
@@ -18,32 +16,32 @@ type FileInfoTruncated struct {
 }
 
 func (o *FileInfoTruncated) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	return o.UnmarshalXDRFrom(&xdr.Unmarshaller{Data: bs})
 }
 
-func (o *FileInfoTruncated) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.Name = xr.ReadStringMax(8192)
-	o.Flags = xr.ReadUint32()
-	o.Modified = int64(xr.ReadUint64())
-	(&o.Version).DecodeXDRFrom(xr)
-	o.LocalVersion = int64(xr.ReadUint64())
-	_BlocksSize := int(xr.ReadUint32())
+func (o *FileInfoTruncated) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.Name = u.UnmarshalStringMax(8192)
+	o.Flags = u.UnmarshalUint32()
+	o.Modified = int64(u.UnmarshalUint64())
+	(&o.Version).UnmarshalXDRFrom(u)
+	o.LocalVersion = int64(u.UnmarshalUint64())
+	_BlocksSize := int(u.UnmarshalUint32())
 	if _BlocksSize < 0 {
 		return xdr.ElementSizeExceeded("Blocks", _BlocksSize, 1000000)
-	}
-	if _BlocksSize > 1000000 {
-		return xdr.ElementSizeExceeded("Blocks", _BlocksSize, 1000000)
+	} else if _BlocksSize == 0 {
+		o.Blocks = nil
+	} else {
+		if _BlocksSize > 1000000 {
+			return xdr.ElementSizeExceeded("Blocks", _BlocksSize, 1000000)
+		}
+		for i := 0; i < _BlocksSize; i++ {
+			size := int64(u.UnmarshalUint32())
+			o.CachedSize += size
+			u.UnmarshalBytes()
+		}
 	}
 
-	buf := make([]byte, 64)
-	for i := 0; i < _BlocksSize; i++ {
-		size := xr.ReadUint32()
-		o.CachedSize += int64(size)
-		xr.ReadBytesMaxInto(64, buf)
-	}
-	return xr.Error()
+	return u.Error
 }
 
 func BlocksToSize(num int) int64 {

lib/discover/localpackets_xdr.go

@@ -5,9 +5,6 @@
 package discover
 
 import (
-	"bytes"
-	"io"
-
 	"github.com/calmh/xdr"
 )
 
@@ -40,13 +37,16 @@ struct Announce {
 
 */
 
-func (o Announce) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o Announce) XDRSize() int {
+	return 4 +
+		o.This.XDRSize() +
+		4 + xdr.SizeOfSlice(o.Extra)
 }
 
 func (o Announce) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o Announce) MustMarshalXDR() []byte {
@@ -57,58 +57,49 @@ func (o Announce) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o Announce) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o Announce) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	xw.WriteUint32(o.Magic)
-	_, err := o.This.EncodeXDRInto(xw)
-	if err != nil {
-		return xw.Tot(), err
+func (o Announce) MarshalXDRInto(m *xdr.Marshaller) error {
+	m.MarshalUint32(o.Magic)
+	if err := o.This.MarshalXDRInto(m); err != nil {
+		return err
 	}
 	if l := len(o.Extra); l > 16 {
-		return xw.Tot(), xdr.ElementSizeExceeded("Extra", l, 16)
+		return xdr.ElementSizeExceeded("Extra", l, 16)
 	}
-	xw.WriteUint32(uint32(len(o.Extra)))
+	m.MarshalUint32(uint32(len(o.Extra)))
 	for i := range o.Extra {
-		_, err := o.Extra[i].EncodeXDRInto(xw)
-		if err != nil {
-			return xw.Tot(), err
+		if err := o.Extra[i].MarshalXDRInto(m); err != nil {
+			return err
 		}
 	}
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Announce) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	return m.Error
 }
 
 func (o *Announce) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *Announce) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.Magic = xr.ReadUint32()
-	(&o.This).DecodeXDRFrom(xr)
-	_ExtraSize := int(xr.ReadUint32())
+func (o *Announce) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.Magic = u.UnmarshalUint32()
+	(&o.This).UnmarshalXDRFrom(u)
+	_ExtraSize := int(u.UnmarshalUint32())
 	if _ExtraSize < 0 {
 		return xdr.ElementSizeExceeded("Extra", _ExtraSize, 16)
+	} else if _ExtraSize == 0 {
+		o.Extra = nil
+	} else {
+		if _ExtraSize > 16 {
+			return xdr.ElementSizeExceeded("Extra", _ExtraSize, 16)
+		}
+		if _ExtraSize <= len(o.Extra) {
+			o.Extra = o.Extra[:_ExtraSize]
+		} else {
+			o.Extra = make([]Device, _ExtraSize)
+		}
+		for i := range o.Extra {
+			(&o.Extra[i]).UnmarshalXDRFrom(u)
+		}
 	}
-	if _ExtraSize > 16 {
-		return xdr.ElementSizeExceeded("Extra", _ExtraSize, 16)
-	}
-	o.Extra = make([]Device, _ExtraSize)
-	for i := range o.Extra {
-		(&o.Extra[i]).DecodeXDRFrom(xr)
-	}
-	return xr.Error()
+	return u.Error
 }
 
 /*
@@ -118,10 +109,8 @@ Device Structure:
  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                         Length of ID                          |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                     ID (variable length)                      \
+\                   ID (length + padded data)                   \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                      Number of Addresses                      |
@@ -146,13 +135,16 @@ struct Device {
 
 */
 
-func (o Device) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o Device) XDRSize() int {
+	return 4 + len(o.ID) + xdr.Padding(len(o.ID)) +
+		4 + xdr.SizeOfSlice(o.Addresses) +
+		4 + xdr.SizeOfSlice(o.Relays)
 }
 
 func (o Device) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o Device) MustMarshalXDR() []byte {
@@ -163,77 +155,75 @@ func (o Device) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o Device) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o Device) EncodeXDRInto(xw *xdr.Writer) (int, error) {
+func (o Device) MarshalXDRInto(m *xdr.Marshaller) error {
 	if l := len(o.ID); l > 32 {
-		return xw.Tot(), xdr.ElementSizeExceeded("ID", l, 32)
+		return xdr.ElementSizeExceeded("ID", l, 32)
 	}
-	xw.WriteBytes(o.ID)
+	m.MarshalBytes(o.ID)
 	if l := len(o.Addresses); l > 16 {
-		return xw.Tot(), xdr.ElementSizeExceeded("Addresses", l, 16)
+		return xdr.ElementSizeExceeded("Addresses", l, 16)
 	}
-	xw.WriteUint32(uint32(len(o.Addresses)))
+	m.MarshalUint32(uint32(len(o.Addresses)))
 	for i := range o.Addresses {
-		_, err := o.Addresses[i].EncodeXDRInto(xw)
-		if err != nil {
-			return xw.Tot(), err
+		if err := o.Addresses[i].MarshalXDRInto(m); err != nil {
+			return err
 		}
 	}
 	if l := len(o.Relays); l > 16 {
-		return xw.Tot(), xdr.ElementSizeExceeded("Relays", l, 16)
+		return xdr.ElementSizeExceeded("Relays", l, 16)
 	}
-	xw.WriteUint32(uint32(len(o.Relays)))
+	m.MarshalUint32(uint32(len(o.Relays)))
 	for i := range o.Relays {
-		_, err := o.Relays[i].EncodeXDRInto(xw)
-		if err != nil {
-			return xw.Tot(), err
+		if err := o.Relays[i].MarshalXDRInto(m); err != nil {
+			return err
 		}
 	}
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Device) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	return m.Error
 }
 
 func (o *Device) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *Device) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.ID = xr.ReadBytesMax(32)
-	_AddressesSize := int(xr.ReadUint32())
+func (o *Device) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.ID = u.UnmarshalBytesMax(32)
+	_AddressesSize := int(u.UnmarshalUint32())
 	if _AddressesSize < 0 {
 		return xdr.ElementSizeExceeded("Addresses", _AddressesSize, 16)
+	} else if _AddressesSize == 0 {
+		o.Addresses = nil
+	} else {
+		if _AddressesSize > 16 {
+			return xdr.ElementSizeExceeded("Addresses", _AddressesSize, 16)
+		}
+		if _AddressesSize <= len(o.Addresses) {
+			o.Addresses = o.Addresses[:_AddressesSize]
+		} else {
+			o.Addresses = make([]Address, _AddressesSize)
+		}
+		for i := range o.Addresses {
+			(&o.Addresses[i]).UnmarshalXDRFrom(u)
+		}
 	}
-	if _AddressesSize > 16 {
-		return xdr.ElementSizeExceeded("Addresses", _AddressesSize, 16)
-	}
-	o.Addresses = make([]Address, _AddressesSize)
-	for i := range o.Addresses {
-		(&o.Addresses[i]).DecodeXDRFrom(xr)
-	}
-	_RelaysSize := int(xr.ReadUint32())
+	_RelaysSize := int(u.UnmarshalUint32())
 	if _RelaysSize < 0 {
 		return xdr.ElementSizeExceeded("Relays", _RelaysSize, 16)
+	} else if _RelaysSize == 0 {
+		o.Relays = nil
+	} else {
+		if _RelaysSize > 16 {
+			return xdr.ElementSizeExceeded("Relays", _RelaysSize, 16)
+		}
+		if _RelaysSize <= len(o.Relays) {
+			o.Relays = o.Relays[:_RelaysSize]
+		} else {
+			o.Relays = make([]Relay, _RelaysSize)
+		}
+		for i := range o.Relays {
+			(&o.Relays[i]).UnmarshalXDRFrom(u)
+		}
 	}
-	if _RelaysSize > 16 {
-		return xdr.ElementSizeExceeded("Relays", _RelaysSize, 16)
-	}
-	o.Relays = make([]Relay, _RelaysSize)
-	for i := range o.Relays {
-		(&o.Relays[i]).DecodeXDRFrom(xr)
-	}
-	return xr.Error()
+	return u.Error
 }
 
 /*
@@ -243,10 +233,8 @@ Address Structure:
  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                         Length of URL                         |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                     URL (variable length)                     \
+\                  URL (length + padded data)                   \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
@@ -257,13 +245,14 @@ struct Address {
 
 */
 
-func (o Address) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o Address) XDRSize() int {
+	return 4 + len(o.URL) + xdr.Padding(len(o.URL))
 }
 
 func (o Address) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o Address) MustMarshalXDR() []byte {
@@ -274,35 +263,21 @@ func (o Address) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o Address) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o Address) EncodeXDRInto(xw *xdr.Writer) (int, error) {
+func (o Address) MarshalXDRInto(m *xdr.Marshaller) error {
 	if l := len(o.URL); l > 2083 {
-		return xw.Tot(), xdr.ElementSizeExceeded("URL", l, 2083)
+		return xdr.ElementSizeExceeded("URL", l, 2083)
 	}
-	xw.WriteString(o.URL)
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Address) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	m.MarshalString(o.URL)
+	return m.Error
 }
 
 func (o *Address) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *Address) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.URL = xr.ReadStringMax(2083)
-	return xr.Error()
+func (o *Address) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.URL = u.UnmarshalStringMax(2083)
+	return u.Error
 }
 
 /*
@@ -312,10 +287,8 @@ Relay Structure:
  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                         Length of URL                         |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                     URL (variable length)                     \
+\                  URL (length + padded data)                   \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                            Latency                            |
@@ -329,13 +302,14 @@ struct Relay {
 
 */
 
-func (o Relay) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o Relay) XDRSize() int {
+	return 4 + len(o.URL) + xdr.Padding(len(o.URL)) + 4
 }
 
 func (o Relay) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o Relay) MustMarshalXDR() []byte {
@@ -346,35 +320,21 @@ func (o Relay) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o Relay) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o Relay) EncodeXDRInto(xw *xdr.Writer) (int, error) {
+func (o Relay) MarshalXDRInto(m *xdr.Marshaller) error {
 	if l := len(o.URL); l > 2083 {
-		return xw.Tot(), xdr.ElementSizeExceeded("URL", l, 2083)
+		return xdr.ElementSizeExceeded("URL", l, 2083)
 	}
-	xw.WriteString(o.URL)
-	xw.WriteUint32(uint32(o.Latency))
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Relay) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	m.MarshalString(o.URL)
+	m.MarshalUint32(uint32(o.Latency))
+	return m.Error
 }
 
 func (o *Relay) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *Relay) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.URL = xr.ReadStringMax(2083)
-	o.Latency = int32(xr.ReadUint32())
-	return xr.Error()
+func (o *Relay) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.URL = u.UnmarshalStringMax(2083)
+	o.Latency = int32(u.UnmarshalUint32())
+	return u.Error
 }

lib/protocol/header.go

@@ -11,15 +11,16 @@ type header struct {
 	compression bool
 }
 
-func (h header) encodeXDR(xw *xdr.Writer) (int, error) {
-	u := encodeHeader(h)
-	return xw.WriteUint32(u)
+func (h header) MarshalXDRInto(m *xdr.Marshaller) error {
+	v := encodeHeader(h)
+	m.MarshalUint32(v)
+	return m.Error
 }
 
-func (h *header) decodeXDR(xr *xdr.Reader) error {
-	u := xr.ReadUint32()
-	*h = decodeHeader(u)
-	return xr.Error()
+func (h *header) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	v := u.UnmarshalUint32()
+	*h = decodeHeader(v)
+	return u.Error
 }
 
 func encodeHeader(h header) uint32 {

lib/protocol/protocol.go

@@ -12,6 +12,7 @@ import (
 	"time"
 
 	lz4 "github.com/bkaradzic/go-lz4"
+	"github.com/calmh/xdr"
 )
 
 const (
@@ -130,8 +131,7 @@ type rawConnection struct {
 	pool        sync.Pool
 	compression Compression
 
-	rdbuf0 []byte // used & reused by readMessage
-	rdbuf1 []byte // used & reused by readMessage
+	readerBuf []byte // used & reused by readMessage
 }
 
 type asyncResult struct {
@@ -146,7 +146,8 @@ type hdrMsg struct {
 }
 
 type encodable interface {
-	AppendXDR([]byte) ([]byte, error)
+	MarshalXDRInto(m *xdr.Marshaller) error
+	XDRSize() int
 }
 
 type isEofer interface {
@@ -374,18 +375,14 @@ func (c *rawConnection) readerLoop() (err error) {
 }
 
 func (c *rawConnection) readMessage() (hdr header, msg encodable, err error) {
-	if cap(c.rdbuf0) < 8 {
-		c.rdbuf0 = make([]byte, 8)
-	} else {
-		c.rdbuf0 = c.rdbuf0[:8]
-	}
-	_, err = io.ReadFull(c.cr, c.rdbuf0)
+	hdrBuf := make([]byte, 8)
+	_, err = io.ReadFull(c.cr, hdrBuf)
 	if err != nil {
 		return
 	}
 
-	hdr = decodeHeader(binary.BigEndian.Uint32(c.rdbuf0[0:4]))
-	msglen := int(binary.BigEndian.Uint32(c.rdbuf0[4:8]))
+	hdr = decodeHeader(binary.BigEndian.Uint32(hdrBuf[:4]))
+	msglen := int(binary.BigEndian.Uint32(hdrBuf[4:]))
 
 	l.Debugf("read header %v (msglen=%d)", hdr, msglen)
 
@@ -399,27 +396,40 @@ func (c *rawConnection) readMessage() (hdr header, msg encodable, err error) {
 		return
 	}
 
-	if cap(c.rdbuf0) < msglen {
-		c.rdbuf0 = make([]byte, msglen)
+	// c.readerBuf contains a buffer we can reuse. But once we've unmarshalled
+	// a message from the buffer we can't reuse it again as the unmarshalled
+	// message refers to the contents of the buffer. The only case we a buffer
+	// ends up in readerBuf for reuse is when the message is compressed, as we
+	// then decompress into a new buffer instead.
+
+	var msgBuf []byte
+	if cap(c.readerBuf) >= msglen {
+		// If we have a buffer ready in rdbuf we just use that.
+		msgBuf = c.readerBuf[:msglen]
 	} else {
-		c.rdbuf0 = c.rdbuf0[:msglen]
+		// Otherwise we allocate a new buffer.
+		msgBuf = make([]byte, msglen)
 	}
-	_, err = io.ReadFull(c.cr, c.rdbuf0)
+
+	_, err = io.ReadFull(c.cr, msgBuf)
 	if err != nil {
 		return
 	}
 
-	l.Debugf("read %d bytes", len(c.rdbuf0))
+	l.Debugf("read %d bytes", len(msgBuf))
 
-	msgBuf := c.rdbuf0
 	if hdr.compression && msglen > 0 {
-		c.rdbuf1 = c.rdbuf1[:cap(c.rdbuf1)]
-		c.rdbuf1, err = lz4.Decode(c.rdbuf1, c.rdbuf0)
+		// We're going to decompress msgBuf into a different newly allocated
+		// buffer, so keep msgBuf around for reuse on the next message.
+		c.readerBuf = msgBuf
+
+		msgBuf, err = lz4.Decode(nil, msgBuf)
 		if err != nil {
 			return
 		}
-		msgBuf = c.rdbuf1
 		l.Debugf("decompressed to %d bytes", len(msgBuf))
+	} else {
+		c.readerBuf = nil
 	}
 
 	if shouldDebug() {
@@ -601,7 +611,14 @@ func (c *rawConnection) writerLoop() {
 		case hm := <-c.outbox:
 			if hm.msg != nil {
 				// Uncompressed message in uncBuf
-				uncBuf, err = hm.msg.AppendXDR(uncBuf[:0])
+				msgLen := hm.msg.XDRSize()
+				if cap(uncBuf) >= msgLen {
+					uncBuf = uncBuf[:msgLen]
+				} else {
+					uncBuf = make([]byte, msgLen)
+				}
+				m := &xdr.Marshaller{Data: uncBuf}
+				err = hm.msg.MarshalXDRInto(m)
 				if hm.done != nil {
 					close(hm.done)
 				}

lib/protocol/protocol_test.go

@@ -3,7 +3,6 @@
 package protocol
 
 import (
-	"bytes"
 	"encoding/binary"
 	"encoding/hex"
 	"encoding/json"
@@ -55,14 +54,13 @@ func TestHeaderMarshalUnmarshal(t *testing.T) {
 		ver = int(uint(ver) % 16)
 		id = int(uint(id) % 4096)
 		typ = int(uint(typ) % 256)
-		buf := new(bytes.Buffer)
-		xw := xdr.NewWriter(buf)
+		buf := make([]byte, 4)
+
 		h0 := header{version: ver, msgID: id, msgType: typ}
-		h0.encodeXDR(xw)
+		h0.MarshalXDRInto(&xdr.Marshaller{Data: buf})
 
-		xr := xdr.NewReader(buf)
 		var h1 header
-		h1.decodeXDR(xr)
+		h1.UnmarshalXDRFrom(&xdr.Unmarshaller{Data: buf})
 		return h0 == h1
 	}
 	if err := quick.Check(f, nil); err != nil {
@@ -128,8 +126,7 @@ func TestVersionErr(t *testing.T) {
 	c0.ClusterConfig(ClusterConfigMessage{})
 	c1.ClusterConfig(ClusterConfigMessage{})
 
-	w := xdr.NewWriter(c0.cw)
-	timeoutWriteHeader(w, header{
+	timeoutWriteHeader(c0.cw, header{
 		version: 2, // higher than supported
 		msgID:   0,
 		msgType: messageTypeIndex,
@@ -154,8 +151,7 @@ func TestTypeErr(t *testing.T) {
 	c0.ClusterConfig(ClusterConfigMessage{})
 	c1.ClusterConfig(ClusterConfigMessage{})
 
-	w := xdr.NewWriter(c0.cw)
-	timeoutWriteHeader(w, header{
+	timeoutWriteHeader(c0.cw, header{
 		version: 0,
 		msgID:   0,
 		msgType: 42, // unknown type
@@ -205,7 +201,7 @@ func TestElementSizeExceededNested(t *testing.T) {
 	m := ClusterConfigMessage{
 		ClientName: "longstringlongstringlongstringinglongstringlongstringlonlongstringlongstringlon",
 	}
-	_, err := m.EncodeXDR(ioutil.Discard)
+	_, err := m.MarshalXDR()
 	if err == nil {
 		t.Errorf("ID length %d > max 64, but no error", len(m.Folders[0].ID))
 	}
@@ -213,12 +209,19 @@ func TestElementSizeExceededNested(t *testing.T) {
 
 func TestMarshalIndexMessage(t *testing.T) {
 	f := func(m1 IndexMessage) bool {
+		if len(m1.Options) == 0 {
+			m1.Options = nil
+		}
 		for i, f := range m1.Files {
 			m1.Files[i].CachedSize = 0
-			for j := range f.Blocks {
-				f.Blocks[j].Offset = 0
-				if len(f.Blocks[j].Hash) == 0 {
-					f.Blocks[j].Hash = nil
+			if len(f.Blocks) == 0 {
+				m1.Files[i].Blocks = nil
+			} else {
+				for j := range f.Blocks {
+					f.Blocks[j].Offset = 0
+					if len(f.Blocks[j].Hash) == 0 {
+						f.Blocks[j].Hash = nil
+					}
 				}
 			}
 		}
@@ -233,6 +236,9 @@ func TestMarshalIndexMessage(t *testing.T) {
 
 func TestMarshalRequestMessage(t *testing.T) {
 	f := func(m1 RequestMessage) bool {
+		if len(m1.Options) == 0 {
+			m1.Options = nil
+		}
 		return testMarshal(t, "request", &m1, &RequestMessage{})
 	}
 
@@ -256,6 +262,9 @@ func TestMarshalResponseMessage(t *testing.T) {
 
 func TestMarshalClusterConfigMessage(t *testing.T) {
 	f := func(m1 ClusterConfigMessage) bool {
+		if len(m1.Options) == 0 {
+			m1.Options = nil
+		}
 		return testMarshal(t, "clusterconfig", &m1, &ClusterConfigMessage{})
 	}
 
@@ -275,13 +284,11 @@ func TestMarshalCloseMessage(t *testing.T) {
 }
 
 type message interface {
-	EncodeXDR(io.Writer) (int, error)
-	DecodeXDR(io.Reader) error
+	MarshalXDR() ([]byte, error)
+	UnmarshalXDR([]byte) error
 }
 
 func testMarshal(t *testing.T, prefix string, m1, m2 message) bool {
-	var buf bytes.Buffer
-
 	failed := func(bc []byte) {
 		bs, _ := json.MarshalIndent(m1, "", "  ")
 		ioutil.WriteFile(prefix+"-1.txt", bs, 0644)
@@ -294,7 +301,7 @@ func testMarshal(t *testing.T, prefix string, m1, m2 message) bool {
 		}
 	}
 
-	_, err := m1.EncodeXDR(&buf)
+	buf, err := m1.MarshalXDR()
 	if err != nil && strings.Contains(err.Error(), "exceeds size") {
 		return true
 	}
@@ -303,23 +310,20 @@ func testMarshal(t *testing.T, prefix string, m1, m2 message) bool {
 		t.Fatal(err)
 	}
 
-	bc := make([]byte, len(buf.Bytes()))
-	copy(bc, buf.Bytes())
-
-	err = m2.DecodeXDR(&buf)
+	err = m2.UnmarshalXDR(buf)
 	if err != nil {
-		failed(bc)
+		failed(buf)
 		t.Fatal(err)
 	}
 
 	ok := reflect.DeepEqual(m1, m2)
 	if !ok {
-		failed(bc)
+		failed(buf)
 	}
 	return ok
 }
 
-func timeoutWriteHeader(w *xdr.Writer, hdr header) {
+func timeoutWriteHeader(w io.Writer, hdr header) {
 	// This tries to write a message header to w, but times out after a while.
 	// This is useful because in testing, with a PipeWriter, it will block
 	// forever if the other side isn't reading any more. On the other hand we
@@ -332,8 +336,7 @@ func timeoutWriteHeader(w *xdr.Writer, hdr header) {
 
 	done := make(chan struct{})
 	go func() {
-		w.WriteRaw(buf[:])
-		l.Infoln("write completed")
+		w.Write(buf[:])
 		close(done)
 	}()
 	select {

lib/protocol/vector_xdr.go

@@ -7,37 +7,29 @@ import "github.com/calmh/xdr"
 // This stuff is hacked up manually because genxdr doesn't support 'type
 // Vector []Counter' declarations and it was tricky when I tried to add it...
 
-type xdrWriter interface {
-	WriteUint32(uint32) (int, error)
-	WriteUint64(uint64) (int, error)
-}
-type xdrReader interface {
-	ReadUint32() uint32
-	ReadUint64() uint64
-}
-
-// EncodeXDRInto encodes the vector as an XDR object into the given XDR
-// encoder.
-func (v Vector) EncodeXDRInto(w xdrWriter) (int, error) {
-	w.WriteUint32(uint32(len(v)))
+func (v Vector) MarshalXDRInto(m *xdr.Marshaller) error {
+	m.MarshalUint32(uint32(len(v)))
 	for i := range v {
-		w.WriteUint64(uint64(v[i].ID))
-		w.WriteUint64(v[i].Value)
+		m.MarshalUint64(uint64(v[i].ID))
+		m.MarshalUint64(v[i].Value)
 	}
-	return 4 + 16*len(v), nil
+	return m.Error
 }
 
-// DecodeXDRFrom decodes the XDR objects from the given reader into itself.
-func (v *Vector) DecodeXDRFrom(r xdrReader) error {
-	l := int(r.ReadUint32())
+func (v *Vector) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	l := int(u.UnmarshalUint32())
 	if l > 1e6 {
 		return xdr.ElementSizeExceeded("number of counters", l, 1e6)
 	}
 	n := make(Vector, l)
 	for i := range n {
-		n[i].ID = ShortID(r.ReadUint64())
-		n[i].Value = r.ReadUint64()
+		n[i].ID = ShortID(u.UnmarshalUint64())
+		n[i].Value = u.UnmarshalUint64()
 	}
 	*v = n
-	return nil
+	return u.Error
+}
+
+func (v Vector) XDRSize() int {
+	return 4 + 16*len(v)
 }

lib/relay/protocol/packets_xdr.go

@@ -5,9 +5,6 @@
 package protocol
 
 import (
-	"bytes"
-	"io"
-
 	"github.com/calmh/xdr"
 )
 
@@ -34,13 +31,14 @@ struct header {
 
 */
 
-func (o header) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o header) XDRSize() int {
+	return 4 + 4 + 4
 }
 
 func (o header) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o header) MustMarshalXDR() []byte {
@@ -51,36 +49,22 @@ func (o header) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o header) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o header) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	xw.WriteUint32(o.magic)
-	xw.WriteUint32(uint32(o.messageType))
-	xw.WriteUint32(uint32(o.messageLength))
-	return xw.Tot(), xw.Error()
-}
-
-func (o *header) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+func (o header) MarshalXDRInto(m *xdr.Marshaller) error {
+	m.MarshalUint32(o.magic)
+	m.MarshalUint32(uint32(o.messageType))
+	m.MarshalUint32(uint32(o.messageLength))
+	return m.Error
 }
 
 func (o *header) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *header) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.magic = xr.ReadUint32()
-	o.messageType = int32(xr.ReadUint32())
-	o.messageLength = int32(xr.ReadUint32())
-	return xr.Error()
+func (o *header) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.magic = u.UnmarshalUint32()
+	o.messageType = int32(u.UnmarshalUint32())
+	o.messageLength = int32(u.UnmarshalUint32())
+	return u.Error
 }
 
 /*
@@ -94,10 +78,9 @@ struct Ping {
 
 */
 
-func (o Ping) EncodeXDR(w io.Writer) (int, error) {
-	return 0, nil
+func (o Ping) XDRSize() int {
+	return 0
 }
-
 func (o Ping) MarshalXDR() ([]byte, error) {
 	return nil, nil
 }
@@ -106,15 +89,7 @@ func (o Ping) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o Ping) AppendXDR(bs []byte) ([]byte, error) {
-	return bs, nil
-}
-
-func (o Ping) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Ping) DecodeXDR(r io.Reader) error {
+func (o Ping) MarshalXDRInto(m *xdr.Marshaller) error {
 	return nil
 }
 
@@ -122,8 +97,8 @@ func (o *Ping) UnmarshalXDR(bs []byte) error {
 	return nil
 }
 
-func (o *Ping) DecodeXDRFrom(xr *xdr.Reader) error {
-	return xr.Error()
+func (o *Ping) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	return nil
 }
 
 /*
@@ -137,10 +112,9 @@ struct Pong {
 
 */
 
-func (o Pong) EncodeXDR(w io.Writer) (int, error) {
-	return 0, nil
+func (o Pong) XDRSize() int {
+	return 0
 }
-
 func (o Pong) MarshalXDR() ([]byte, error) {
 	return nil, nil
 }
@@ -149,15 +123,7 @@ func (o Pong) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o Pong) AppendXDR(bs []byte) ([]byte, error) {
-	return bs, nil
-}
-
-func (o Pong) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Pong) DecodeXDR(r io.Reader) error {
+func (o Pong) MarshalXDRInto(m *xdr.Marshaller) error {
 	return nil
 }
 
@@ -165,8 +131,8 @@ func (o *Pong) UnmarshalXDR(bs []byte) error {
 	return nil
 }
 
-func (o *Pong) DecodeXDRFrom(xr *xdr.Reader) error {
-	return xr.Error()
+func (o *Pong) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	return nil
 }
 
 /*
@@ -180,10 +146,9 @@ struct JoinRelayRequest {
 
 */
 
-func (o JoinRelayRequest) EncodeXDR(w io.Writer) (int, error) {
-	return 0, nil
+func (o JoinRelayRequest) XDRSize() int {
+	return 0
 }
-
 func (o JoinRelayRequest) MarshalXDR() ([]byte, error) {
 	return nil, nil
 }
@@ -192,15 +157,7 @@ func (o JoinRelayRequest) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o JoinRelayRequest) AppendXDR(bs []byte) ([]byte, error) {
-	return bs, nil
-}
-
-func (o JoinRelayRequest) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	return xw.Tot(), xw.Error()
-}
-
-func (o *JoinRelayRequest) DecodeXDR(r io.Reader) error {
+func (o JoinRelayRequest) MarshalXDRInto(m *xdr.Marshaller) error {
 	return nil
 }
 
@@ -208,8 +165,8 @@ func (o *JoinRelayRequest) UnmarshalXDR(bs []byte) error {
 	return nil
 }
 
-func (o *JoinRelayRequest) DecodeXDRFrom(xr *xdr.Reader) error {
-	return xr.Error()
+func (o *JoinRelayRequest) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	return nil
 }
 
 /*
@@ -223,10 +180,9 @@ struct RelayFull {
 
 */
 
-func (o RelayFull) EncodeXDR(w io.Writer) (int, error) {
-	return 0, nil
+func (o RelayFull) XDRSize() int {
+	return 0
 }
-
 func (o RelayFull) MarshalXDR() ([]byte, error) {
 	return nil, nil
 }
@@ -235,15 +191,7 @@ func (o RelayFull) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o RelayFull) AppendXDR(bs []byte) ([]byte, error) {
-	return bs, nil
-}
-
-func (o RelayFull) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	return xw.Tot(), xw.Error()
-}
-
-func (o *RelayFull) DecodeXDR(r io.Reader) error {
+func (o RelayFull) MarshalXDRInto(m *xdr.Marshaller) error {
 	return nil
 }
 
@@ -251,8 +199,8 @@ func (o *RelayFull) UnmarshalXDR(bs []byte) error {
 	return nil
 }
 
-func (o *RelayFull) DecodeXDRFrom(xr *xdr.Reader) error {
-	return xr.Error()
+func (o *RelayFull) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	return nil
 }
 
 /*
@@ -262,10 +210,8 @@ JoinSessionRequest Structure:
  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                         Length of Key                         |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                     Key (variable length)                     \
+\                  Key (length + padded data)                   \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
@@ -276,13 +222,14 @@ struct JoinSessionRequest {
 
 */
 
-func (o JoinSessionRequest) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o JoinSessionRequest) XDRSize() int {
+	return 4 + len(o.Key) + xdr.Padding(len(o.Key))
 }
 
 func (o JoinSessionRequest) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o JoinSessionRequest) MustMarshalXDR() []byte {
@@ -293,35 +240,21 @@ func (o JoinSessionRequest) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o JoinSessionRequest) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o JoinSessionRequest) EncodeXDRInto(xw *xdr.Writer) (int, error) {
+func (o JoinSessionRequest) MarshalXDRInto(m *xdr.Marshaller) error {
 	if l := len(o.Key); l > 32 {
-		return xw.Tot(), xdr.ElementSizeExceeded("Key", l, 32)
+		return xdr.ElementSizeExceeded("Key", l, 32)
 	}
-	xw.WriteBytes(o.Key)
-	return xw.Tot(), xw.Error()
-}
-
-func (o *JoinSessionRequest) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	m.MarshalBytes(o.Key)
+	return m.Error
 }
 
 func (o *JoinSessionRequest) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *JoinSessionRequest) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.Key = xr.ReadBytesMax(32)
-	return xr.Error()
+func (o *JoinSessionRequest) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.Key = u.UnmarshalBytesMax(32)
+	return u.Error
 }
 
 /*
@@ -333,10 +266,8 @@ Response Structure:
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                             Code                              |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                       Length of Message                       |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                   Message (variable length)                   \
+\                Message (length + padded data)                 \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
@@ -348,13 +279,15 @@ struct Response {
 
 */
 
-func (o Response) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o Response) XDRSize() int {
+	return 4 +
+		4 + len(o.Message) + xdr.Padding(len(o.Message))
 }
 
 func (o Response) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o Response) MustMarshalXDR() []byte {
@@ -365,34 +298,20 @@ func (o Response) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o Response) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o Response) EncodeXDRInto(xw *xdr.Writer) (int, error) {
-	xw.WriteUint32(uint32(o.Code))
-	xw.WriteString(o.Message)
-	return xw.Tot(), xw.Error()
-}
-
-func (o *Response) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+func (o Response) MarshalXDRInto(m *xdr.Marshaller) error {
+	m.MarshalUint32(uint32(o.Code))
+	m.MarshalString(o.Message)
+	return m.Error
 }
 
 func (o *Response) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *Response) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.Code = int32(xr.ReadUint32())
-	o.Message = xr.ReadString()
-	return xr.Error()
+func (o *Response) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.Code = int32(u.UnmarshalUint32())
+	o.Message = u.UnmarshalString()
+	return u.Error
 }
 
 /*
@@ -402,10 +321,8 @@ ConnectRequest Structure:
  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                         Length of ID                          |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                     ID (variable length)                      \
+\                   ID (length + padded data)                   \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
@@ -416,13 +333,14 @@ struct ConnectRequest {
 
 */
 
-func (o ConnectRequest) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o ConnectRequest) XDRSize() int {
+	return 4 + len(o.ID) + xdr.Padding(len(o.ID))
 }
 
 func (o ConnectRequest) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o ConnectRequest) MustMarshalXDR() []byte {
@@ -433,35 +351,21 @@ func (o ConnectRequest) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o ConnectRequest) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o ConnectRequest) EncodeXDRInto(xw *xdr.Writer) (int, error) {
+func (o ConnectRequest) MarshalXDRInto(m *xdr.Marshaller) error {
 	if l := len(o.ID); l > 32 {
-		return xw.Tot(), xdr.ElementSizeExceeded("ID", l, 32)
+		return xdr.ElementSizeExceeded("ID", l, 32)
 	}
-	xw.WriteBytes(o.ID)
-	return xw.Tot(), xw.Error()
-}
-
-func (o *ConnectRequest) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	m.MarshalBytes(o.ID)
+	return m.Error
 }
 
 func (o *ConnectRequest) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
 }
-
-func (o *ConnectRequest) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.ID = xr.ReadBytesMax(32)
-	return xr.Error()
+func (o *ConnectRequest) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.ID = u.UnmarshalBytesMax(32)
+	return u.Error
 }
 
 /*
@@ -471,25 +375,19 @@ SessionInvitation Structure:
  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                        Length of From                         |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                    From (variable length)                     \
+\                  From (length + padded data)                  \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                         Length of Key                         |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                     Key (variable length)                     \
+\                  Key (length + padded data)                   \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|                       Length of Address                       |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 /                                                               /
-\                   Address (variable length)                   \
+\                Address (length + padded data)                 \
 /                                                               /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-|            0x0000             |             Port              |
+|         16 zero bits          |             Port              |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                  Server Socket (V=0 or 1)                   |V|
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@@ -505,13 +403,16 @@ struct SessionInvitation {
 
 */
 
-func (o SessionInvitation) EncodeXDR(w io.Writer) (int, error) {
-	var xw = xdr.NewWriter(w)
-	return o.EncodeXDRInto(xw)
+func (o SessionInvitation) XDRSize() int {
+	return 4 + len(o.From) + xdr.Padding(len(o.From)) +
+		4 + len(o.Key) + xdr.Padding(len(o.Key)) +
+		4 + len(o.Address) + xdr.Padding(len(o.Address)) + 4 + 4
 }
 
 func (o SessionInvitation) MarshalXDR() ([]byte, error) {
-	return o.AppendXDR(make([]byte, 0, 128))
+	buf := make([]byte, o.XDRSize())
+	m := &xdr.Marshaller{Data: buf}
+	return buf, o.MarshalXDRInto(m)
 }
 
 func (o SessionInvitation) MustMarshalXDR() []byte {
@@ -522,47 +423,33 @@ func (o SessionInvitation) MustMarshalXDR() []byte {
 	return bs
 }
 
-func (o SessionInvitation) AppendXDR(bs []byte) ([]byte, error) {
-	var aw = xdr.AppendWriter(bs)
-	var xw = xdr.NewWriter(&aw)
-	_, err := o.EncodeXDRInto(xw)
-	return []byte(aw), err
-}
-
-func (o SessionInvitation) EncodeXDRInto(xw *xdr.Writer) (int, error) {
+func (o SessionInvitation) MarshalXDRInto(m *xdr.Marshaller) error {
 	if l := len(o.From); l > 32 {
-		return xw.Tot(), xdr.ElementSizeExceeded("From", l, 32)
+		return xdr.ElementSizeExceeded("From", l, 32)
 	}
-	xw.WriteBytes(o.From)
+	m.MarshalBytes(o.From)
 	if l := len(o.Key); l > 32 {
-		return xw.Tot(), xdr.ElementSizeExceeded("Key", l, 32)
+		return xdr.ElementSizeExceeded("Key", l, 32)
 	}
-	xw.WriteBytes(o.Key)
+	m.MarshalBytes(o.Key)
 	if l := len(o.Address); l > 32 {
-		return xw.Tot(), xdr.ElementSizeExceeded("Address", l, 32)
+		return xdr.ElementSizeExceeded("Address", l, 32)
 	}
-	xw.WriteBytes(o.Address)
-	xw.WriteUint16(o.Port)
-	xw.WriteBool(o.ServerSocket)
-	return xw.Tot(), xw.Error()
-}
-
-func (o *SessionInvitation) DecodeXDR(r io.Reader) error {
-	xr := xdr.NewReader(r)
-	return o.DecodeXDRFrom(xr)
+	m.MarshalBytes(o.Address)
+	m.MarshalUint16(o.Port)
+	m.MarshalBool(o.ServerSocket)
+	return m.Error
 }
 
 func (o *SessionInvitation) UnmarshalXDR(bs []byte) error {
-	var br = bytes.NewReader(bs)
-	var xr = xdr.NewReader(br)
-	return o.DecodeXDRFrom(xr)
-}
-
-func (o *SessionInvitation) DecodeXDRFrom(xr *xdr.Reader) error {
-	o.From = xr.ReadBytesMax(32)
-	o.Key = xr.ReadBytesMax(32)
-	o.Address = xr.ReadBytesMax(32)
-	o.Port = xr.ReadUint16()
-	o.ServerSocket = xr.ReadBool()
-	return xr.Error()
+	u := &xdr.Unmarshaller{Data: bs}
+	return o.UnmarshalXDRFrom(u)
+}
+func (o *SessionInvitation) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+	o.From = u.UnmarshalBytesMax(32)
+	o.Key = u.UnmarshalBytesMax(32)
+	o.Address = u.UnmarshalBytesMax(32)
+	o.Port = u.UnmarshalUint16()
+	o.ServerSocket = u.UnmarshalBool()
+	return u.Error
 }

lib/relay/protocol/protocol.go

@@ -74,7 +74,13 @@ func WriteMessage(w io.Writer, message interface{}) error {
 
 func ReadMessage(r io.Reader) (interface{}, error) {
 	var header header
-	if err := header.DecodeXDR(r); err != nil {
+
+	buf := make([]byte, header.XDRSize())
+	if _, err := io.ReadFull(r, buf); err != nil {
+		return nil, err
+	}
+
+	if err := header.UnmarshalXDR(buf); err != nil {
 		return nil, err
 	}
 
@@ -82,38 +88,43 @@ func ReadMessage(r io.Reader) (interface{}, error) {
 		return nil, fmt.Errorf("magic mismatch")
 	}
 
+	buf = make([]byte, int(header.messageLength))
+	if _, err := io.ReadFull(r, buf); err != nil {
+		return nil, err
+	}
+
 	switch header.messageType {
 	case messageTypePing:
 		var msg Ping
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypePong:
 		var msg Pong
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypeJoinRelayRequest:
 		var msg JoinRelayRequest
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypeJoinSessionRequest:
 		var msg JoinSessionRequest
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypeResponse:
 		var msg Response
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypeConnectRequest:
 		var msg ConnectRequest
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypeSessionInvitation:
 		var msg SessionInvitation
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	case messageTypeRelayFull:
 		var msg RelayFull
-		err := msg.DecodeXDR(r)
+		err := msg.UnmarshalXDR(buf)
 		return msg, err
 	}