我尝试连接到服务器并向服务器发送一些信息(如用户名、密码..),然后服务器将 ID(字符串类型)发回给我。问题是我无法获得ID。有人可以帮我吗?我是IOS编码的初学者。谢谢。
这是代码:
- 单击按钮后,它将调用我自己的函数来获取字符串的 serverIP 和 int 的端口。
然后该函数将调用此函数来连接服务器:
(void)logInCheck { asyncSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()]; NSError *error = nil; uint16_t port = serverPort; if (![asyncSocket connectToHost:serverIP onPort:port error:&error]) { DDLogError(@"Unable to connect to due to invalid configuration: %@", error); } else { DDLogVerbose(@"Connecting..."); [self passDataToServer]; } } //DataPassToServer is a NSString that hold my data (void)passDataToServer { NSData *requestData = [DataPassToServer dataUsingEncoding:NSUTF8StringEncoding]; [asyncSocket writeData:requestData withTimeout:-1.0 tag:0]; [asyncSocket readDataWithTimeout:-1 tag:0]; } //this function call successfully -(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port { DDLogVerbose(@"socket:didConnectToHost:%@ port:%hu", host, port); } //this function call successfully (void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag { DDLogVerbose(@"socket:didWriteDataWithTag:"); } //This function does not run !!! Nothing print out. (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag { DDLogVerbose(@"socket:didReadData:withTag:"); NSString *response = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"ID = %@",response); [asyncSocket readDataWithTimeout:-1 tag:0]; }