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@@ -34,6 +34,7 @@
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#include <errno.h>
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#include <fcntl.h>
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#include <ifaddrs.h>
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+#include <net/if.h>
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <pthread.h>
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@@ -42,6 +43,7 @@
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#include <string.h>
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#include <sys/epoll.h>
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#include <sys/eventfd.h>
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+#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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@@ -5333,14 +5335,19 @@ static int _dns_create_socket(const char *host_ip, int type)
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struct addrinfo *gai = NULL;
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char port_str[8];
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char ip[MAX_IP_LEN];
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+ char host_ip_device[MAX_IP_LEN * 2];
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int port = 0;
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char *host = NULL;
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int optval = 1;
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int yes = 1;
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const int priority = SOCKET_PRIORITY;
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const int ip_tos = SOCKET_IP_TOS;
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+ const char *ifname = NULL;
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- if (parse_ip(host_ip, ip, &port) == 0) {
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+ safe_strncpy(host_ip_device, host_ip, sizeof(host_ip_device));
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+ ifname = strstr(host_ip_device, "@");
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+
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+ if (parse_ip(host_ip_device, ip, &port) == 0) {
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host = ip;
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}
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@@ -5375,6 +5382,17 @@ static int _dns_create_socket(const char *host_ip, int type)
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setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority));
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setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos));
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+ if (ifname != NULL) {
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+ struct ifreq ifr;
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+ memset(&ifr, 0, sizeof(struct ifreq));
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+ safe_strncpy(ifr.ifr_name, ifname + 1, sizeof(ifr.ifr_name));
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+ ioctl(fd, SIOCGIFINDEX, &ifr);
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+ if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(struct ifreq)) < 0) {
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+ tlog(TLOG_ERROR, "bind socket to device %s faild, %s\n", ifr.ifr_name, strerror(errno));
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+ goto errout;
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+ }
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+ }
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+
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if (bind(fd, gai->ai_addr, gai->ai_addrlen) != 0) {
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tlog(TLOG_ERROR, "bind service %s failed, %s\n", host_ip, strerror(errno));
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goto errout;
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Nick Peng