X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.c;h=5c59c6fa5e11abf11063f8be58d077b3c9d73d50;hp=de1ac58c8c997838c8e450c6ec7eed2058124739;hb=4fa12eb85d72f039df5004abc201f01f5573c2e4;hpb=82455be966027a087a2ac23e3464594c81d7b111

diff --git a/src/net.c b/src/net.c
index de1ac58c..5c59c6fa 100644
--- a/src/net.c
+++ b/src/net.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net.c,v 1.35.4.97 2001/02/25 19:09:41 guus Exp $
+    $Id: net.c,v 1.35.4.100 2001/02/27 16:37:25 guus Exp $
 */
 
 #include "config.h"
@@ -26,6 +26,8 @@
 #include <fcntl.h>
 #include <netdb.h>
 #include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -365,7 +367,7 @@ int setup_listen_meta_socket(int port)
 {
   int nfd, flags;
   struct sockaddr_in a;
-  const int one = 1;
+  int option;
   config_t const *cfg;
 cp
   if((nfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
@@ -374,22 +376,6 @@ cp
       return -1;
     }
 
-  if(setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)))
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("System call `%s' failed: %m"),
-	     "setsockopt");
-      return -1;
-    }
-
-  if(setsockopt(nfd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(one)))
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("System call `%s' failed: %m"),
-	     "setsockopt");
-      return -1;
-    }
-
   flags = fcntl(nfd, F_GETFL);
   if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
     {
@@ -399,9 +385,19 @@ cp
       return -1;
     }
 
+  /* Optimize TCP settings */
+  
+  option = 1;
+  setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
+  setsockopt(nfd, SOL_SOCKET, SO_KEEPALIVE, &option, sizeof(option));
+  setsockopt(nfd, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
+
+  option = IPTOS_LOWDELAY;
+  setsockopt(nfd, SOL_IP, IP_TOS, &option, sizeof(option));
+  
   if((cfg = get_config_val(config, config_interface)))
     {
-      if(setsockopt(nfd, SOL_SOCKET, SO_KEEPALIVE, cfg->data.ptr, strlen(cfg->data.ptr)))
+      if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, cfg->data.ptr, strlen(cfg->data.ptr)))
         {
           close(nfd);
           syslog(LOG_ERR, _("Unable to bind listen socket to interface %s: %m"), cfg->data.ptr);
@@ -453,13 +449,7 @@ cp
       return -1;
     }
 
-  if(setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)))
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("System call `%s' failed: %m"),
-	     "setsockopt");
-      return -1;
-    }
+  setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
 
   flags = fcntl(nfd, F_GETFL);
   if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
@@ -493,6 +483,7 @@ int setup_outgoing_meta_socket(connection_t *cl)
   int flags;
   struct sockaddr_in a;
   config_t const *cfg;
+  int option;
 cp
   if(debug_lvl >= DEBUG_CONNECTIONS)
     syslog(LOG_INFO, _("Trying to connect to %s"), cl->hostname);
@@ -522,6 +513,17 @@ cp
       syslog(LOG_ERR, _("System call `%s' failed: %m"), "bind");
       return -1;
     }
+
+  /* Optimize TCP settings */
+  
+  option = 1;
+  setsockopt(cl->meta_socket, SOL_SOCKET, SO_KEEPALIVE, &option, sizeof(option));
+  setsockopt(cl->meta_socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
+
+  option = IPTOS_LOWDELAY;
+  setsockopt(cl->meta_socket, SOL_IP, IP_TOS, &option, sizeof(option));
+  
+  /* Connect */
   
   a.sin_family = AF_INET;
   a.sin_port = htons(cl->port);
@@ -969,82 +971,6 @@ cp
   return;
 }
 
-/*
-  create a data (udp) socket
-  OBSOLETED: use only one listening socket for compatibility with non-Linux operating systems
-*/
-int setup_vpn_connection(connection_t *cl)
-{
-  int nfd, flags;
-  struct sockaddr_in a;
-  const int one = 1;
-cp
-  if(debug_lvl >= DEBUG_TRAFFIC)
-    syslog(LOG_DEBUG, _("Opening UDP socket to %s"), cl->hostname);
-
-  nfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
-  if(nfd == -1)
-    {
-      syslog(LOG_ERR, _("Creating UDP socket failed: %m"));
-      return -1;
-    }
-
-  if(setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)))
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("System call `%s' failed: %m"),
-	     "setsockopt");
-      return -1;
-    }
-
-  flags = fcntl(nfd, F_GETFL);
-  if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("System call `%s' failed: %m"),
-	     "fcntl");
-      return -1;
-    }
-
-  memset(&a, 0, sizeof(a));
-  a.sin_family = AF_INET;
-  a.sin_port = htons(myself->port);
-  a.sin_addr.s_addr = htonl(INADDR_ANY);
-
-  if(bind(nfd, (struct sockaddr *)&a, sizeof(struct sockaddr)))
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("Can't bind to port %hd/udp: %m"), myself->port);
-      return -1;
-    }
-
-  a.sin_family = AF_INET;
-  a.sin_port = htons(cl->port);
-  a.sin_addr.s_addr = htonl(cl->address);
-
-  if(connect(nfd, (struct sockaddr *)&a, sizeof(a)) == -1)
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("Connecting to %s port %d failed: %m"),
-	     cl->hostname, cl->port);
-      return -1;
-    }
-
-  flags = fcntl(nfd, F_GETFL);
-  if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
-    {
-      close(nfd);
-      syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m %s (%s)"), __FILE__, __LINE__, nfd,
-             cl->name, cl->hostname);
-      return -1;
-    }
-
-  cl->socket = nfd;
-  cl->status.dataopen = 1;
-cp
-  return 0;
-}
-
 /*
   handle an incoming tcp connect call and open
   a connection to it.
@@ -1217,8 +1143,9 @@ cp
 
   /* Check if this was our outgoing connection */
     
-  if(cl->status.outgoing && cl->status.active)
+  if(cl->status.outgoing)
     {
+      cl->status.outgoing = 0;
       signal(SIGALRM, sigalrm_handler);
       seconds_till_retry = 5;
       alarm(seconds_till_retry);