let client:TCPClient = TCPClient(addr:"192.168.0.124",port:10001); let (success,errmsg) = client.connect(timeout: 10); if(success){ let pack:Pack = Pack(id: 100) pack.put(101,v: "101") pack.put(102,v: "Hello") pack.put(103,v: "30") let (success,errmsg) = client.send(data: pack.toNSData()) if(success){ let result:[UInt8] = client.read(1024*100)! if let str = Nsstring(bytes: result,length: result.count,encoding: NSUTF8StringEncoding) as? String { print(str) } else { print("not a valid UTF-8 sequence") } let data:NSData = NSData(bytes: result,length: result.count) let str:String = String(data: data,encoding: NSUTF8StringEncoding)! print(str) }else{ print(errmsg) } }else{ print(errmsg) }