fix unix timecode bug in handshake url. close #118.

Author: MichaelScaria

SocketIO.m

@@ -38,7 +38,7 @@
 #endif
 
 static NSString* kResourceName = @"socket.io";
-static NSString* kHandshakeURL = @"%@://%@%@/%@/1/?t=%d%@";
+static NSString* kHandshakeURL = @"%@://%@%@/%@/1/?t=%.0f%@";
 static NSString* kForceDisconnectURL = @"%@://%@%@/%@/1/xhr-polling/%@?disconnect";
 
 float const defaultConnectionTimeout = 10.0f;
@@ -135,7 +135,8 @@ - (void) connectToHost:(NSString *)host
         // do handshake via HTTP request
         NSString *protocol = _useSecure ? @"https" : @"http";
         NSString *port = _port ? [NSString stringWithFormat:@":%d", _port] : @"";
-        NSString *handshakeUrl = [NSString stringWithFormat:kHandshakeURL, protocol, _host, port, kResourceName, rand(), query];
+        NSTimeInterval time = [[NSDate date] timeIntervalSince1970] * 1000;
+        NSString *handshakeUrl = [NSString stringWithFormat:kHandshakeURL, protocol, _host, port, kResourceName, time, query];
 
         DEBUGLOG(@"Connecting to socket with URL: %@", handshakeUrl);
         query = nil;