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发回给我(字符串类型)。问题是我无法获取ID。谁能帮助我?我是IOS编码的初学者。感谢。
以下是代码:
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];
}
答案 0 :(得分:4)
我不了解您的服务器实现,但是大多数实现在处理请求之前会读取第一个换行符。
因此,请确保您的[DataPassToServer dataUsingEncoding:NSUTF8StringEncoding]
最后包含换行符("\n"
)。
您的代码看起来很好,适合我。