我正在尝试在我的 iPhone 应用程序中使用 SmallSockets 来建立与 Windows 主机（服务器）的 TCP 套接字连接。当我编译时，我收到以下错误：
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_Socket", referenced from:
objc-class-ref in SmallSocketsTestViewController.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
具体来说，红色部分是以下几行：
"_OBJC_CLASS_$_Socket", referenced from:
clang: error: linker command failed with exit code 1 (use -v to see invocation)
我是 iOS 开发的新手，而且对套接字编程非常陌生，所以当涉及到这些错误时，我非常迷茫。任何帮助深表感谢。谢谢！
这是我用来建立连接的代码：
-(IBAction)btnConnect:(id)sender
{
Socket *socket;
int port = 11005;
NSString *host = @"19.5.8.63";
socket = [Socket socket];
@try
{
NSMutableData *data;
[socket connectToHostName:host port:port];
[socket readData:data];
// [socket writeString:@"Hello World!"];
//** Connection was successful **//
//[socket retain]; // Must retain if want to use out of this action block.
}
@catch (NSException* exception)
{
NSString *errMsg = [NSString stringWithFormat:@"%@",[exception reason]];
NSLog(errMsg);
socket = nil;
}
//** Disconnect **//
[socket close];
}
如果我将整个方法注释掉，我不会收到任何错误。不确定这是否有助于阐明这个问题。