AsyncSocket WHOIS connect - objective-c

Question

I'm trying to connect to WHOIS servers (com.whois-servers.net:43) using GCDAsyncSocket. I can connect and write to the server and the didWriteDataWithTag: gets called but there is no data. The WHOIS server does in fact sends a response but I cant read it.
NSLog(#"Connecting to \"%#\" on port %hu...", host, port);
self.viewController.label.text = #"Connecting...";
NSError *error = nil;
if (![asyncSocket connectToHost:#"com.whois-servers.net" onPort:43 error:&error])
{
DDLogError(#"Error connecting: %#", error);
self.viewController.label.text = #"Oops";
}
NSString *requestStr = [NSString stringWithFormat:#"domain google.com\r\n\r\n"];
NSData *requestData = [requestStr dataUsingEncoding:NSUTF8StringEncoding];
[asyncSocket writeData:requestData withTimeout:-1 tag:0];
[asyncSocket readDataToData:[GCDAsyncSocket CRLFData] withTimeout:-1 tag:0];
Here is the didReadData:
- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
DDLogInfo(#"socket:%p didReadData:withTag:%d", sock, tag);
NSString *response = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"Data: %i", [data length]);
}
Help?!

Answer 1

I ran into the same problem using AsyncSocket. I never fully solved it, but found a close solution.
In onSocket:willDisconnectWithError (GapSocketCommand.m) you can get the current buffer when the connection fails by calling unreadData.
- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err
{
NSLog(#"onSocket:willDisconnectWithError %#",err);
NSData * unreadData = [sock unreadData]; // ** This gets the current buffer
if(unreadData) {
[self onSocket:sock didReadData:unreadData withTag:NULL]; // ** Return as much data that could be collected
} else {
NSString* jsString = [[NSString alloc] initWithFormat:#"GapSocket.__onError(\"%d\",\"%#\");"
,[sock userData]
,[err localizedDescription] ];
[self.webView stringByEvaluatingJavaScriptFromString:jsString];
//[jsString release];
}
}
You'll have to modify it to apply to GCDAsyncSocket, but the solution should be the same.