added missing files

tun_dev_client.cpp

@@ -0,0 +1,290 @@
+#include "tun_dev.h"
+
+
+int tun_dev_client_event_loop()
+{
+	char data[buf_len];
+	int len;
+	int i,j,k,ret;
+	int tun_fd;
+
+	int remote_fd;
+	fd64_t remote_fd64;
+
+	tun_fd=get_tun_fd(tun_dev);
+	assert(tun_fd>0);
+
+	assert(new_connected_socket2(remote_fd,remote_addr)==0);
+	remote_fd64=fd_manager.create(remote_fd);
+
+	assert(set_tun(tun_dev,htonl((ntohl(sub_net_uint32)&0xFFFFFF00)|2),htonl((ntohl(sub_net_uint32)&0xFFFFFF00 )|1),tun_mtu)==0);
+
+	///epoll_fd = epoll_create1(0);
+	///assert(epoll_fd>0);
+
+	///const int max_events = 4096;
+	///struct epoll_event ev, events[max_events];
+	///if (epoll_fd < 0) {
+	///	mylog(log_fatal,"epoll return %d\n", epoll_fd);
+	///	myexit(-1);
+	///}
+
+	struct ev_loop * loop= ev_default_loop(0);
+	assert(loop != NULL);
+
+
+	ev.events = EPOLLIN;
+	ev.data.u64 = remote_fd64;
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, remote_fd, &ev);
+	if (ret!=0) {
+		mylog(log_fatal,"add  remote_fd64 error\n");
+		myexit(-1);
+	}
+
+	ev.events = EPOLLIN;
+	ev.data.u64 = tun_fd;
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, tun_fd, &ev);
+	if (ret!=0) {
+		mylog(log_fatal,"add  tun_fd error\n");
+		myexit(-1);
+	}
+
+
+	ev.events = EPOLLIN;
+	ev.data.u64 = delay_manager.get_timer_fd();
+
+	mylog(log_debug,"delay_manager.get_timer_fd()=%d\n",delay_manager.get_timer_fd());
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, delay_manager.get_timer_fd(), &ev);
+	if (ret!= 0) {
+		mylog(log_fatal,"add delay_manager.get_timer_fd() error\n");
+		myexit(-1);
+	}
+
+
+    conn_info_t *conn_info_p=new conn_info_t;
+    conn_info_t &conn_info=*conn_info_p;  //huge size of conn_info,do not allocate on stack
+
+	u64_t tmp_timer_fd64=conn_info.fec_encode_manager.get_timer_fd64();
+	ev.events = EPOLLIN;
+	ev.data.u64 = tmp_timer_fd64;
+
+	mylog(log_debug,"conn_info.fec_encode_manager.get_timer_fd64()=%llu\n",conn_info.fec_encode_manager.get_timer_fd64());
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd_manager.to_fd(tmp_timer_fd64), &ev);
+	if (ret!= 0) {
+		mylog(log_fatal,"add fec_encode_manager.get_timer_fd64() error\n");
+		myexit(-1);
+	}
+
+	conn_info.timer.add_fd_to_epoll(epoll_fd);
+	conn_info.timer.set_timer_repeat_us(timer_interval*1000);
+
+
+	int fifo_fd=-1;
+
+	if(fifo_file[0]!=0)
+	{
+		fifo_fd=create_fifo(fifo_file);
+		ev.events = EPOLLIN;
+		ev.data.u64 = fifo_fd;
+
+		ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fifo_fd, &ev);
+		if (ret!= 0) {
+			mylog(log_fatal,"add fifo_fd to epoll error %s\n",strerror(errno));
+			myexit(-1);
+		}
+		mylog(log_info,"fifo_file=%s\n",fifo_file);
+	}
+
+
+	dest_t udp_dest;
+	udp_dest.cook=1;
+	udp_dest.type=type_fd64;
+	udp_dest.inner.fd64=remote_fd64;
+
+	dest_t tun_dest;
+	tun_dest.type=type_write_fd;
+	tun_dest.inner.fd=tun_fd;
+
+	int got_feed_back=0;
+
+	while(1)////////////////////////
+	{
+
+		if(about_to_exit) myexit(0);
+
+		int nfds = epoll_wait(epoll_fd, events, max_events, 180 * 1000);
+		if (nfds < 0) {  //allow zero
+			if(errno==EINTR  )
+			{
+				mylog(log_info,"epoll interrupted by signal,continue\n");
+				//myexit(0);
+			}
+			else
+			{
+				mylog(log_fatal,"epoll_wait return %d,%s\n", nfds,strerror(errno));
+				myexit(-1);
+			}
+		}
+		int idx;
+		for (idx = 0; idx < nfds; ++idx)
+		{
+			if(events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd())
+			{
+				uint64_t value;
+				read(conn_info.timer.get_timer_fd(), &value, 8);
+				mylog(log_trace,"events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd()\n");
+				conn_info.stat.report_as_client();
+				if(got_feed_back) do_keep_alive(udp_dest);
+			}
+
+			else if(events[idx].data.u64==conn_info.fec_encode_manager.get_timer_fd64())
+			{
+				fd64_t fd64=events[idx].data.u64;
+				mylog(log_trace,"events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64()\n");
+
+				uint64_t value;
+				if(!fd_manager.exist(fd64))   //fd64 has been closed
+				{
+					mylog(log_trace,"!fd_manager.exist(fd64)");
+					continue;
+				}
+				if((ret=read(fd_manager.to_fd(fd64), &value, 8))!=8)
+				{
+					mylog(log_trace,"(ret=read(fd_manager.to_fd(fd64), &value, 8))!=8,ret=%d\n",ret);
+					continue;
+				}
+				if(value==0)
+				{
+					mylog(log_debug,"value==0\n");
+					continue;
+				}
+				assert(value==1);
+
+				char header=(got_feed_back==0?header_new_connect:header_normal);
+				from_normal_to_fec2(conn_info,udp_dest,0,0,header);
+			}
+			else if(events[idx].data.u64==(u64_t)tun_fd)
+			{
+				len=read(tun_fd,data,max_data_len+1);
+
+				if(len==max_data_len+1)
+				{
+					mylog(log_warn,"huge packet, data_len > %d,dropped\n",max_data_len);
+					continue;
+				}
+
+				if(len<0)
+				{
+					mylog(log_warn,"read from tun_fd return %d,errno=%s\n",len,strerror(errno));
+					continue;
+				}
+
+				do_mssfix(data,len);
+
+				mylog(log_trace,"Received packet from tun,len: %d\n",len);
+
+				char header=(got_feed_back==0?header_new_connect:header_normal);
+				from_normal_to_fec2(conn_info,udp_dest,data,len,header);
+
+			}
+			else if(events[idx].data.u64==(u64_t)remote_fd64)
+			{
+				fd64_t fd64=events[idx].data.u64;
+				int fd=fd_manager.to_fd(fd64);
+
+				len=recv(fd,data,max_data_len+1,0);
+
+				if(len==max_data_len+1)
+				{
+					mylog(log_warn,"huge packet, data_len > %d,dropped\n",max_data_len);
+					continue;
+				}
+
+				if(len<0)
+				{
+					mylog(log_warn,"recv return %d,errno=%s\n",len,strerror(errno));
+					continue;
+				}
+
+				if(de_cook(data,len)<0)
+				{
+					mylog(log_warn,"de_cook(data,len)failed \n");
+					continue;
+
+				}
+
+				char header=0;
+				if(get_header(header,data,len)!=0)
+				{
+					mylog(log_warn,"get_header failed\n");
+					continue;
+				}
+
+				if(header==header_keep_alive)
+				{
+					mylog(log_trace,"got keep_alive packet\n");
+					continue;
+				}
+
+				if(header==header_reject)
+				{
+					if(keep_reconnect==0)
+					{
+						mylog(log_fatal,"server restarted or switched to handle another client,exited\n");
+						myexit(-1);
+					}
+					else
+					{
+						if(got_feed_back==1)
+							mylog(log_warn,"server restarted or switched to handle another client,but keep-reconnect enabled,trying to reconnect\n");
+						got_feed_back=0;
+					}
+					continue;
+				}
+				else if(header==header_normal)
+				{
+					if(got_feed_back==0)
+						mylog(log_info,"connection accepted by server\n");
+					got_feed_back=1;
+				}
+				else
+				{
+					mylog(log_warn,"invalid header %d %d\n",int(header),len);
+					continue;
+				}
+
+				mylog(log_trace,"Received packet from udp,len: %d\n",len);
+
+				from_fec_to_normal2(conn_info,tun_dest,data,len);
+
+			}
+		    else if (events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd())
+		    {
+				uint64_t value;
+				read(delay_manager.get_timer_fd(), &value, 8);
+				mylog(log_trace,"events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()\n");
+
+			}
+			else if (events[idx].data.u64 == (u64_t)fifo_fd)
+			{
+				char buf[buf_len];
+				int len=read (fifo_fd, buf, sizeof (buf));
+				if(len<0)
+				{
+					mylog(log_warn,"fifo read failed len=%d,errno=%s\n",len,strerror(errno));
+					continue;
+				}
+				buf[len]=0;
+				handle_command(buf);
+			}
+			else
+			{
+				assert(0==1);
+			}
+		}
+		delay_manager.check();
+	}
+
+
+	return 0;
+}

tun_dev_server.cpp

@@ -0,0 +1,317 @@
+#include "tun_dev.h"
+
+int tun_dev_server_event_loop()
+{
+	char data[buf_len];
+	int len;
+	int i,j,k,ret;
+	int epoll_fd,tun_fd;
+	int local_listen_fd;
+
+	tun_fd=get_tun_fd(tun_dev);
+	assert(tun_fd>0);
+
+	assert(new_listen_socket2(local_listen_fd,local_addr)==0);
+	assert(set_tun(tun_dev,htonl((ntohl(sub_net_uint32)&0xFFFFFF00)|1),htonl((ntohl(sub_net_uint32)&0xFFFFFF00 )|2),tun_mtu)==0);
+
+	epoll_fd = epoll_create1(0);
+	assert(epoll_fd>0);
+
+	const int max_events = 4096;
+	struct epoll_event ev, events[max_events];
+	if (epoll_fd < 0) {
+		mylog(log_fatal,"epoll return %d\n", epoll_fd);
+		myexit(-1);
+	}
+
+	ev.events = EPOLLIN;
+	ev.data.u64 = local_listen_fd;
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, local_listen_fd, &ev);
+	if (ret!=0) {
+		mylog(log_fatal,"add  udp_listen_fd error\n");
+		myexit(-1);
+	}
+
+	ev.events = EPOLLIN;
+	ev.data.u64 = tun_fd;
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, tun_fd, &ev);
+	if (ret!=0) {
+		mylog(log_fatal,"add  tun_fd error\n");
+		myexit(-1);
+	}
+
+	ev.events = EPOLLIN;
+	ev.data.u64 = delay_manager.get_timer_fd();
+
+	mylog(log_debug,"delay_manager.get_timer_fd()=%d\n",delay_manager.get_timer_fd());
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, delay_manager.get_timer_fd(), &ev);
+	if (ret!= 0) {
+		mylog(log_fatal,"add delay_manager.get_timer_fd() error\n");
+		myexit(-1);
+	}
+
+
+    conn_info_t *conn_info_p=new conn_info_t;
+    conn_info_t &conn_info=*conn_info_p;  //huge size of conn_info,do not allocate on stack
+
+	u64_t tmp_timer_fd64=conn_info.fec_encode_manager.get_timer_fd64();
+	ev.events = EPOLLIN;
+	ev.data.u64 = tmp_timer_fd64;
+
+	mylog(log_debug,"conn_info.fec_encode_manager.get_timer_fd64()=%llu\n",conn_info.fec_encode_manager.get_timer_fd64());
+	ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd_manager.to_fd(tmp_timer_fd64), &ev);
+	if (ret!= 0) {
+		mylog(log_fatal,"add fec_encode_manager.get_timer_fd64() error\n");
+		myexit(-1);
+	}
+
+	conn_info.timer.add_fd_to_epoll(epoll_fd);
+	conn_info.timer.set_timer_repeat_us(timer_interval*1000);
+
+
+
+
+	int fifo_fd=-1;
+
+	if(fifo_file[0]!=0)
+	{
+		fifo_fd=create_fifo(fifo_file);
+		ev.events = EPOLLIN;
+		ev.data.u64 = fifo_fd;
+
+		ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fifo_fd, &ev);
+		if (ret!= 0) {
+			mylog(log_fatal,"add fifo_fd to epoll error %s\n",strerror(errno));
+			myexit(-1);
+		}
+		mylog(log_info,"fifo_file=%s\n",fifo_file);
+	}
+
+	dest_t udp_dest;
+	udp_dest.cook=1;
+	udp_dest.type=type_fd_addr;
+
+	udp_dest.inner.fd_addr.fd=local_listen_fd;
+	udp_dest.inner.fd_addr.addr.clear();
+
+	dest_t tun_dest;
+	tun_dest.type=type_write_fd;
+	tun_dest.inner.fd=tun_fd;
+
+	while(1)////////////////////////
+	{
+
+		if(about_to_exit) myexit(0);
+
+		int nfds = epoll_wait(epoll_fd, events, max_events, 180 * 1000);
+		if (nfds < 0) {  //allow zero
+			if(errno==EINTR  )
+			{
+				mylog(log_info,"epoll interrupted by signal,continue\n");
+				//myexit(0);
+			}
+			else
+			{
+				mylog(log_fatal,"epoll_wait return %d,%s\n", nfds,strerror(errno));
+				myexit(-1);
+			}
+		}
+		int idx;
+		for (idx = 0; idx < nfds; ++idx)
+		{
+			if(events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd())
+			{
+				uint64_t value;
+				read(conn_info.timer.get_timer_fd(), &value, 8);
+
+				if(udp_dest.inner.fd_addr.addr.is_vaild()==0)
+				{
+					continue;
+				}
+				conn_info.stat.report_as_server(udp_dest.inner.fd_addr.addr);
+				do_keep_alive(udp_dest);
+			}
+			else if(events[idx].data.u64==conn_info.fec_encode_manager.get_timer_fd64())
+			{
+				assert(udp_dest.inner.fd_addr.addr.is_vaild()!=0);
+				mylog(log_trace,"events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64()\n");
+				uint64_t fd64=events[idx].data.u64;
+				//mylog(log_info,"timer!!!\n");
+				uint64_t value;
+				if(!fd_manager.exist(fd64))   //fd64 has been closed
+				{
+					mylog(log_trace,"!fd_manager.exist(fd64)");
+					continue;
+				}
+				if((ret=read(fd_manager.to_fd(fd64), &value, 8))!=8)
+				{
+					mylog(log_trace,"(ret=read(fd_manager.to_fd(fd64), &value, 8))!=8,ret=%d\n",ret);
+					continue;
+				}
+				if(value==0)
+				{
+					mylog(log_debug,"value==0\n");
+					continue;
+				}
+				assert(value==1);
+
+				from_normal_to_fec2(conn_info,udp_dest,0,0,header_normal);
+			}
+			else if(events[idx].data.u64==(u64_t)local_listen_fd)
+			{
+				//struct sockaddr_in udp_new_addr_in={0};
+				//socklen_t udp_new_addr_len = sizeof(sockaddr_in);
+				address_t::storage_t udp_new_addr_in={0};
+				socklen_t udp_new_addr_len = sizeof(address_t::storage_t);
+
+				if ((len = recvfrom(local_listen_fd, data, max_data_len+1, 0,
+						(struct sockaddr *) &udp_new_addr_in, &udp_new_addr_len)) < 0) {
+					mylog(log_error,"recv_from error,this shouldnt happen,err=%s,but we can try to continue\n",strerror(errno));
+					continue;
+					//myexit(1);
+				};
+
+				address_t new_addr;
+				new_addr.from_sockaddr((struct sockaddr *) &udp_new_addr_in,udp_new_addr_len);
+
+				if(len==max_data_len+1)
+				{
+					mylog(log_warn,"huge packet, data_len > %d,dropped\n",max_data_len);
+					continue;
+				}
+
+				if(de_cook(data,len)<0)
+				{
+					mylog(log_warn,"de_cook(data,len)failed \n");
+					continue;
+
+				}
+
+				char header=0;
+				if(get_header(header,data,len)!=0)
+				{
+					mylog(log_warn,"get_header failed\n");
+					continue;
+				}
+
+				if(udp_dest.inner.fd_addr.addr==new_addr)
+				{
+					if(header==header_keep_alive)
+					{
+						mylog(log_trace,"got keep_alive packet\n");
+						continue;
+					}
+
+					if(header!=header_new_connect&& header!=header_normal)
+					{
+						mylog(log_warn,"invalid header\n");
+						continue;
+					}
+				}
+				else
+				{
+					if(header==header_keep_alive)
+					{
+						mylog(log_debug,"got keep_alive packet from unexpected client\n");
+						continue;
+					}
+
+					if(header==header_new_connect)
+					{
+						mylog(log_info,"new connection from %s\n", new_addr.get_str());
+						udp_dest.inner.fd_addr.addr=new_addr;
+						//udp_dest.inner.fd_ip_port.ip_port.ip=udp_new_addr_in.sin_addr.s_addr;
+						//udp_dest.inner.fd_ip_port.ip_port.port=ntohs(udp_new_addr_in.sin_port);
+						conn_info.fec_decode_manager.clear();
+						conn_info.fec_encode_manager.clear_data();
+						memset(&conn_info.stat,0,sizeof(conn_info.stat));
+
+					}
+					else if(header==header_normal)
+					{
+						mylog(log_debug,"rejected connection from %s\n", new_addr.get_str());
+
+
+						len=1;
+						data[0]=header_reject;
+						do_cook(data,len);
+
+
+						dest_t tmp_dest;
+						tmp_dest.type=type_fd_addr;
+
+						tmp_dest.inner.fd_addr.fd=local_listen_fd;
+						tmp_dest.inner.fd_addr.addr=new_addr;
+
+						delay_manager.add(0,tmp_dest,data,len);;
+						continue;
+					}
+					else
+					{
+						mylog(log_warn,"invalid header\n");
+					}
+				}
+
+				mylog(log_trace,"Received packet from %s,len: %d\n", new_addr.get_str(),len);
+
+				from_fec_to_normal2(conn_info,tun_dest,data,len);
+
+			}
+			else if(events[idx].data.u64==(u64_t)tun_fd)
+			{
+				len=read(tun_fd,data,max_data_len+1);
+
+				if(len==max_data_len+1)
+				{
+					mylog(log_warn,"huge packet, data_len > %d,dropped\n",max_data_len);
+					continue;
+				}
+
+				if(len<0)
+				{
+					mylog(log_warn,"read from tun_fd return %d,errno=%s\n",len,strerror(errno));
+					continue;
+				}
+
+				do_mssfix(data,len);
+
+				mylog(log_trace,"Received packet from tun,len: %d\n",len);
+
+				if(udp_dest.inner.fd_addr.addr.is_vaild()==0)
+				{
+					mylog(log_debug,"received packet from tun,but there is no client yet,dropped packet\n");
+					continue;
+				}
+
+				from_normal_to_fec2(conn_info,udp_dest,data,len,header_normal);
+
+			}
+		    else if (events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd())
+		    {
+				uint64_t value;
+				read(delay_manager.get_timer_fd(), &value, 8);
+				mylog(log_trace,"events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()\n");
+			}
+			else if (events[idx].data.u64 == (u64_t)fifo_fd)
+			{
+				char buf[buf_len];
+				int len=read (fifo_fd, buf, sizeof (buf));
+				if(len<0)
+				{
+					mylog(log_warn,"fifo read failed len=%d,errno=%s\n",len,strerror(errno));
+					continue;
+				}
+				buf[len]=0;
+				handle_command(buf);
+			}
+			else
+			{
+				assert(0==1);
+			}
+		}
+		delay_manager.check();
+	}
+
+
+	return 0;
+}