Apply patch from Scott Lamb unifying configuration of TCP socket options.
[oweals/tinc.git] / src / net_socket.c
index c691780..ab2d79d 100644 (file)
 #define EINPROGRESS WSAEINPROGRESS
 #endif
 
+/* Needed on Mac OS/X */
+#ifndef SOL_TCP
+#define SOL_TCP IPPROTO_TCP
+#endif
+
 int addressfamily = AF_UNSPEC;
 int maxtimeout = 900;
 int seconds_till_retry = 5;
@@ -48,6 +53,31 @@ int listen_sockets;
 
 /* Setup sockets */
 
+static void configure_tcp(connection_t *c)
+{
+       int option;
+
+#ifdef O_NONBLOCK
+       if(!blockingtcp) {
+               int flags = fcntl(c->socket, F_GETFL);
+
+               if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
+                       logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
+               }
+       }
+#endif
+
+#if defined(SOL_TCP) && defined(TCP_NODELAY)
+       option = 1;
+       setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
+#endif
+
+#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
+       option = IPTOS_LOWDELAY;
+       setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
+#endif
+}
+
 int setup_listen_socket(const sockaddr_t *sa)
 {
        int nfd;
@@ -64,33 +94,11 @@ int setup_listen_socket(const sockaddr_t *sa)
                return -1;
        }
 
-#ifdef O_NONBLOCK
-       {
-               int flags = fcntl(nfd, F_GETFL);
-
-               if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
-                       closesocket(nfd);
-                       logger(LOG_ERR, _("System call `%s' failed: %s"), "fcntl",
-                                  strerror(errno));
-                       return -1;
-               }
-       }
-#endif
-
        /* Optimize TCP settings */
 
        option = 1;
        setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
 
-#if defined(SOL_TCP) && defined(TCP_NODELAY)
-       setsockopt(nfd, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-#endif
-
-#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
-       option = IPTOS_LOWDELAY;
-       setsockopt(nfd, SOL_IP, IP_TOS, &option, sizeof(option));
-#endif
-
        if(get_config_string
           (lookup_config(config_tree, "BindToInterface"), &iface)) {
 #if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
@@ -237,19 +245,13 @@ void retry_outgoing(outgoing_t *outgoing)
 
 void finish_connecting(connection_t *c)
 {
+       int option;
+
        cp();
 
        ifdebug(CONNECTIONS) logger(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
 
-#ifdef O_NONBLOCK
-       if(blockingtcp) {
-               int flags = fcntl(c->socket, F_GETFL);
-
-               if(fcntl(c->socket, F_SETFL, flags & ~O_NONBLOCK) < 0) {
-                       logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
-               }
-       }
-#endif
+       configure_tcp(c);
 
        c->last_ping_time = now;
 
@@ -314,25 +316,7 @@ begin:
 
        /* Optimize TCP settings */
 
-#if defined(SOL_TCP) && defined(TCP_NODELAY)
-       option = 1;
-       setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-#endif
-
-#if defined(SOL_IP) && defined(IP_TOS)
-       option = IPTOS_LOWDELAY;
-       setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
-#endif
-
-       /* Non-blocking */
-
-#ifdef O_NONBLOCK
-       flags = fcntl(c->socket, F_GETFL);
-
-       if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
-               logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
-       }
-#endif
+       configure_tcp(c);
 
        /* Connect */
 
@@ -407,6 +391,7 @@ void setup_outgoing_connection(outgoing_t *outgoing)
 */
 bool handle_new_meta_connection(int sock)
 {
+       int option;
        connection_t *c;
        sockaddr_t sa;
        int fd, len = sizeof(sa);
@@ -437,15 +422,7 @@ bool handle_new_meta_connection(int sock)
 
        ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection from %s"), c->hostname);
 
-#ifdef O_NONBLOCK
-       if(blockingtcp) {
-               int flags = fcntl(c->socket, F_GETFL);
-
-               if(fcntl(c->socket, F_SETFL, flags & ~O_NONBLOCK) < 0) {
-                       logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
-               }
-       }
-#endif
+       configure_tcp(c);
 
        connection_add(c);