Don't bind outgoing TCP sockets anymore.

The code introduced in commit 41a05f59ba2c3eb5caab555f096ed1b9fbe69ee3 is not
needed anymore, since tinc has been able to handle UDP packets from a different
source address than those of the TCP packets since 1.0.10.  When using multiple
BindToAddress statements, this code does not make sense anymore, we do want the
kernel to choose the source address on its own.

diff --git a/src/net_socket.c b/src/net_socket.c
index d8bb007876320dbe72536a78748e15cac0b87a7d..f371dc12f91fe2e88322cfb99b64a27e1c960c02 100644 (file)
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -34,8 +34,6 @@
 #include "utils.h"
 #include "xalloc.h"
 
-#include <assert.h>
-
 /* Needed on Mac OS/X */
 #ifndef SOL_TCP
 #define SOL_TCP IPPROTO_TCP
@@ -110,63 +108,6 @@ static bool bind_to_interface(int sd) {
        return true;
 }
 
-static bool bind_to_address(connection_t *c) {
-       char *node;
-       struct addrinfo *ai_list;
-       struct addrinfo *ai_ptr;
-       struct addrinfo ai_hints;
-       int status;
-
-       assert(c != NULL);
-       assert(c->socket >= 0);
-
-       node = NULL;
-       if(!get_config_string(lookup_config(config_tree, "BindToAddress"),
-                               &node))
-               return true;
-
-       assert(node != NULL);
-
-       memset(&ai_hints, 0, sizeof(ai_hints));
-       ai_hints.ai_family = c->address.sa.sa_family;
-       /* We're called from `do_outgoing_connection' only. */
-       ai_hints.ai_socktype = SOCK_STREAM;
-       ai_hints.ai_protocol = IPPROTO_TCP;
-
-       ai_list = NULL;
-
-       status = getaddrinfo(node, /* service = */ NULL,
-                       &ai_hints, &ai_list);
-       if(status) {
-               free(node);
-               logger(LOG_WARNING, "Error looking up %s port %s: %s",
-                               node, "any", gai_strerror(status));
-               return false;
-       }
-       assert(ai_list != NULL);
-
-       status = -1;
-       for(ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) {
-               status = bind(c->socket,
-                               ai_list->ai_addr, ai_list->ai_addrlen);
-               if(!status)
-                       break;
-       }
-
-
-       if(status) {
-               logger(LOG_ERR, "Can't bind to %s/tcp: %s", node, sockstrerror(sockerrno));
-       } else ifdebug(CONNECTIONS) {
-               logger(LOG_DEBUG, "Successfully bound outgoing "
-                               "TCP socket to %s", node);
-       }
-
-       free(node);
-       freeaddrinfo(ai_list);
-
-       return status ? false : true;
-}
-
 int setup_listen_socket(const sockaddr_t *sa) {
        int nfd;
        char *addrstr;
@@ -434,7 +375,6 @@ begin:
 #endif
 
        bind_to_interface(c->socket);
-       bind_to_address(c);
 
        /* Optimize TCP settings */