CODEWITHSUNDEEP
iphoneobjective-ciosxcodewebsocket
John Smith
John Smith

Reputation: 1

Unitt: Establishing WebSocket Connection

I'm using the Unitt library (http://code.google.com/p/unitt/wiki/UnittWebSocketClient) to attempt to establish a connection to a local server via WebSockets within my iOS (iPhone) application.

I've successfully configured the project and am including the necessary project files, yet for some reason I cannot establish a simple connection. The code I am using is:

in SomeWebsocket.m:

WebSocketConnectConfig* config = [WebSocketConnectConfig configWithURLString:@"ws://localhost" origin:nil protocols:nil tlsSettings:nil headers:nil verifySecurityKey:YES extensions:nil ];
config.closeTimeout = 15.0;
ws = [WebSocket webSocketWithConfig:config delegate:self];
[ws open];

in SomeViewController.m:

MyWebSocket* myWS =[[MyWebSocket alloc] init];
[myWS startMyWebSocket];

Unfortunately, when I run the script, the only output is, [via console/NSLog],:

Oops. An error occurred.

Oops. It closed.

The only thing I can think of is that, when attempting to perform the handshake/login, I'm not sending some additional information that I should be. The server, for example, expects a username among other things. Could this be the problem, or perhaps it's something unrelated?

I've been working on this for quite some time and I can' figure it out, so I would definitely appreciate any help. Thanks.

EDIT: With no changes, I'm now also getting errors like so:

* Assertion failure in -[AsyncSocket doCFReadStreamCallback:forStream:], /Users/jmorris/Projects/xCode/UnitT/UnittWebSocketClient/trunk/UnittWebSocketClient/AsyncSocket.m:2811

* Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: theReadStream != NULL'

Upvotes: 0

Views: 1100

Answers (3)

vatti
vatti

Reputation: 473

WebSocketConnectConfig* config = [WebSocketConnectConfig 
                                  configWithURLString:kWebsocketURL 
                                  origin:nil
                                  protocols:nil 
                                  tlsSettings:nil 
                                  headers:nil 
                                  verifySecurityKey:YES 
                                  extensions:nil];

config.closeTimeout = -1;
config.timeout = -1;
   //   config.keepAlive = 5.0; //send ping from the server to keep socket alive 
WebSocket *ws1 = [WebSocket webSocketWithConfig:config delegate:shared];

This is the code that I am using and it works fine. I had problems with stoppingtimer so, i dont ping from the client but just from server side.

Upvotes: 1

mikelikespie
mikelikespie

Reputation: 5842

You should try SocketRocket, a WebSocket library we just released. Supports RFC 6455 (latest standard). No CocoaAsyncSocket dependencies.

Upvotes: 1

Josh Morris
Josh Morris

Reputation: 266

Do you know what version of the web socket specification the server is running? I expect that your client version and your server version are experiencing a mismatch. It is only in the later versions of the specification that there is a clear way to communicate and handle such things. I am working on an update to the latest rev, but the holidays have made such things a bit challenging as of late. :)

Upvotes: 2

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