Network connection code seems to be working now

proxy.c

@@ -211,7 +211,7 @@ static void livesync_handle_peersync( ssize_t datalen ) {
 }
 
 int usage( char *self ) {
-  fprintf( stderr, "Usage: %s -i ip -p port\n", self );
+  fprintf( stderr, "Usage: %s -L <livesync_iface_ip> -l <listenip>:<listenport> -c <connectip>:<connectport>\n", self );
   return 0;
 }
 
@@ -274,6 +274,7 @@ static void handle_reconnects( void ) {
   for( i=0; i<g_connection_count; ++i )
     if( PROXYPEER_NEEDSCONNECT( g_connections[i].state ) ) {
       int64 newfd = socket_tcp6( );
+      fprintf( stderr, "(Re)connecting to peer..." );
       if( newfd < 0 ) continue; /* No socket for you */
       io_fd(newfd);
       if( socket_bind6_reuse(newfd,g_serverip,g_serverport,0) ) {
@@ -389,6 +390,7 @@ close_socket:
        indata_length should be less than 20+256*7 bytes, for incomplete torrent entries */
     datalen = io_tryread( peersocket, (void*)(peer->indata + peer->indata_length), sizeof( peer->indata ) - peer->indata_length ); 
     if( !datalen || datalen < -1 ) {
+      fprintf( stderr, "Connection closed by remote peer.\n" );
       io_close( peersocket );
       reset_info_block( peer );
     } else if( datalen > 0 ) {
@@ -402,6 +404,7 @@ close_socket:
 /* Can write new sync data to the stream */
 static void handle_write( int64 peersocket ) {
   proxy_peer *peer = io_getcookie( peersocket );
+
   if( !peer ) { 
     /* Can't happen ;) */
     io_close( peersocket );
@@ -416,25 +419,32 @@ static void handle_write( int64 peersocket ) {
   case FLAG_CONNECTING:
     /* Ensure that the connection is established and handle connection error */
     if( peer->state & FLAG_OUTGOING && !socket_connected( peersocket ) ) {
+        fprintf( stderr, "failed\n" );
+        reset_info_block( peer );
         io_close( peersocket );
         break;
     }
 
     io_trywrite( peersocket, (void*)&g_tracker_id, sizeof( g_tracker_id ) );
     PROXYPEER_SETWAITTRACKERID( peer->state );
+    fprintf( stderr, " succeeded.\n" );
+
     io_dontwantwrite( peersocket );
     io_wantread( peersocket );
     break;
   case FLAG_CONNECTED:
     switch( iob_send( peersocket, &peer->outdata ) ) {
     case 0: /* all data sent */
+      fprintf( stderr, "EMPTY\n" );
       io_dontwantwrite( peersocket );
       break;
     case -3: /* an error occured */
+      fprintf( stderr, "ERROR\n" );
       io_close( peersocket );
       reset_info_block( peer );
       break;
     default: /* Normal operation or eagain */
+      fprintf( stderr, "EGAIN\n" );
       break;
     }
     break;
@@ -445,7 +455,6 @@ static void handle_write( int64 peersocket ) {
 
 static void server_mainloop() {
   int64 sock;
-  tai6464 now;
 
   /* inlined livesync_init() */
   memset( g_peerbuffer_start, 0, sizeof( g_peerbuffer_start ) ); 
@@ -461,9 +470,7 @@ static void server_mainloop() {
       handle_reconnects( );
 
     /* Wait for io events until next approx reconn check time */
-    taia_now( &now );
+    io_waituntil2( 30*1000 );
-    taia_addsec( &now, &now, 30 );
-    io_waituntil( now );
 
     /* Loop over readable sockets */
     while( ( sock = io_canread( ) ) != -1 ) {
@@ -482,31 +489,90 @@ static void server_mainloop() {
   }
 }
 
+static void panic( const char *routine ) {
+  fprintf( stderr, "%s: %s\n", routine, strerror(errno) );
+  exit( 111 );
+}
+
+static int64_t ot_try_bind( ot_ip6 ip, uint16_t port ) {
+  int64 sock = socket_tcp6( );
+
+  if( socket_bind6_reuse( sock, ip, port, 0 ) == -1 )
+    panic( "socket_bind6_reuse" );
+
+  if( socket_listen( sock, SOMAXCONN) == -1 )
+    panic( "socket_listen" );
+
+  if( !io_fd( sock ) )
+    panic( "io_fd" );
+
+  io_setcookie( sock, (void*)FLAG_SERVERSOCKET );
+  io_wantread( sock );
+  return sock;
+}
+
+
+static int scan_ip6_port( const char *src, ot_ip6 ip, uint16 *port ) {
+  const char *s = src;
+  int off, bracket = 0;
+  while( isspace(*s) ) ++s;
+  if( *s == '[' ) ++s, ++bracket; /* for v6 style notation */
+  if( !(off = scan_ip6( s, ip ) ) )
+    return 0;
+  s += off;
+  if( *s == 0 || isspace(*s)) return s-src;
+  if( *s == ']' && bracket ) ++s;
+  if( !ip6_isv4mapped(ip)){
+    if( ( bracket && *(s) != ':' ) || ( *(s) != '.' ) ) return 0;
+    s++;
+  } else {
+    if( *(s++) != ':' ) return 0;
+  }
+  if( !(off = scan_ushort (s, port ) ) )
+     return 0;
+  return off+s-src;
+}
+
 int main( int argc, char **argv ) {
   static pthread_t sync_in_thread_id;
   static pthread_t sync_out_thread_id;
   ot_ip6 serverip;
   uint16_t tmpport;
-  int scanon = 1, bound = 0;
+  int scanon = 1, lbound = 0, sbound = 0;
 
   srandom( time(NULL) );
   g_tracker_id = random();
+  noipv6=1;
 
   while( scanon ) {
-    switch( getopt( argc, argv, ":i:p:vh" ) ) {
+    switch( getopt( argc, argv, ":l:c:L:h" ) ) {
     case -1: scanon = 0; break;
-    case 'S': 
+    case 'l':
-      if( !scan_ip6( optarg, serverip )) { usage( argv[0] ); exit( 1 ); }
+      tmpport = 0;
+      if( !scan_ip6_port( optarg, serverip, &tmpport ) || !tmpport ) { usage( argv[0] ); exit( 1 ); }
+      ot_try_bind( serverip, tmpport );
+      ++sbound;
       break;
-    case 'p':
+    case 'c': 
-      if( !scan_ushort( optarg, &tmpport)) { usage( argv[0] ); exit( 1 ); }
+      if( g_connection_count > MAX_PEERS / 2 ) exerr( "Connection limit exceeded.\n" ); 
-      livesync_bind_mcast( serverip, tmpport); bound++; break;
+      tmpport = 0;
+      if( !scan_ip6_port( optarg,
+        g_connections[g_connection_count].ip,
+        &g_connections[g_connection_count].port ) ||
+        !g_connections[g_connection_count].port ) { usage( argv[0] ); exit( 1 ); }
+      g_connections[g_connection_count++].state = FLAG_OUTGOING;
+      break;
+    case 'L':
+      tmpport = 9696;
+      if( !scan_ip6_port( optarg, serverip, &tmpport ) || !tmpport ) { usage( argv[0] ); exit( 1 ); }
+      livesync_bind_mcast( serverip, tmpport); ++lbound; break;
     default:
     case '?': usage( argv[0] ); exit( 1 );
     }
   }
 
-  if( !bound ) exerr( "No port bound." );
+  if( !lbound ) exerr( "No livesync port bound." );
+  if( !g_connection_count && !sbound ) exerr( "No streamsync port bound." );
   pthread_create( &sync_in_thread_id, NULL, livesync_worker, NULL );
   pthread_create( &sync_out_thread_id, NULL, streamsync_worker, NULL );