Asyncsocket iPhone read data

I'm trying to catch a response from a .NET server using the following code.

Doing a telnet test works (I get the response); but, using this code, I don't get a response.

-(IBAction)connectClicked:(id)sender {
    if (![socket connectToHost:@"192.168.100.192" onPort:1337 error:nil]) {
        NSLog(@"connection failed");
    }    
}

-(IBAction)fireClicked:(id)sender {
    NSString *welcomeMsg = @"GetId";
    NSData *welcomeData = [welcomeMsg dataUsingEncoding:NSUTF8StringEncoding];
    [socket writeData:welcomeData withTimeout:-1 tag:0];
    NSLog(@"message sent!");
}

- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString*)host port:(UInt16)port {
    NSLog(@"onSocket:%p didConnectToHost:%@ port:%hu", sock, host, port);
    [sock readDataToData:[AsyncSocket CRLFData] withTimeout:-1 tag:0];
}

-(void) onSocket:(AsyncSocket *)sock didReadData:(NSData*)data withTag:(long)tag {
    NSLog(@"onSocket:%p didReadData:%i", tag);    
    [sock readDataToData:[AsyncSocket CRLFData] withTime开发者_开发百科out:-1 tag:0];
}

- (void)onSocket:(AsyncSocket *)sock didWriteDataWithTag:(long)tag {
    NSLog(@"onSocket:didWriteDataWithTag:%i", tag);    
    [sock readDataToData:[AsyncSocket CRLFData] withTimeout:-1 tag:0];
}

I do get the connection with the server and I'm able to send information to the server, but I do not get a reply.

This is what I get in the logging;

2011-03-21 10:00:32.424 CtC[33521:207] onSocket:0x4c3ebc0 didConnectToHost:192.168.100.192 port:1337
2011-03-21 10:00:35.846 CtC[33521:207] message sent!

Why am I not receiving a reply?

i also have the same problem. i simulated the 'enter' button when write data since the server don't know when the command ended.

So this line

NSString *welcomeMsg = @"GetId"; 

should become

NSString *welcomeMsg = @"GetId\r\n";

It worked now.

I am not clear on what could go wrong because the code snippet is not enough. But that is how I would go on:

1. Check that when you connect to the host that it does not raise an error
2. In you fireClicked method make sure that socket is properly initiated
3. Maybe override didConnectToHost method and add a NSLog statement to see if you connected
4. Use the given socket "sock" inside didReadData and didWriteDataWithTag instead of the variable "socket"
5. Tell us what logging statements you get
6. Tell us how you created the socket and how you connected to the host.

Hope that helps - Andy

WireShark is always useful in these situations. A quick comparison between telnet and your app might indicate a difference.

Try removing the 'readDataWithTimeout' that you have in the didConnectToHost, since you call this after a write anyway.
I'm wondering if you are getting a disconnect which is causing the timeout on the read, ie your wire protocol is wrong. WireShark should help there.