php与c#的tcp通信问题

Question

好的，我正在开发 ac# 应用程序，该应用程序充当端口 4 上的服务器。我的网站上的 php 脚本充当客户端。它可以连接到服务器，但是，当服务器或客户端尝试发送数据时。结果数据只是随机数和符号。 PHP以下脚本

：

$msg = $host + " connected;";
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_connect($socket, $host, 4);
socket_write($socket, $msg, strlen($msg));
socket_close($socket);

C#：

while (heartbeat == false)
                {
                    if (listener.Pending())
                    {
                        heartbeatC = listener.AcceptTcpClient();
                        //heartbeatS = listener.AcceptSocket();
                        NetworkStream heartBeatStream = heartbeatC.GetStream();
                        string heartbeatEP = heartbeatC.Client.RemoteEndPoint.ToString();
                        string heartbeatIP = heartbeatEP.Remove(heartbeatEP.IndexOf(':'), heartbeatEP.Length - heartbeatEP.IndexOf(':'));
                        if (heartbeatIP == Dns.GetHostAddresses("***.********.com")[0].ToString())
                        {
                            dottime.Enabled = false;
                            Console.WriteLine("\nHeartbeat.");
                            bool heartbeatR = false;
                            while (heartbeatR == false)
                            {
                                if (heartBeatStream.DataAvailable)
                                {
                                    //StreamReader sr = new StreamReader(heartBeatStream);
                                    byte[] message = new byte[1024];
                                    int bytesRead = 0;
                                    bytesRead = heartbeatC.Client.Receive(message);
                                    ASCIIEncoding encoder = new ASCIIEncoding();
                                    string msg = encoder.GetString(message);
                                    Console.WriteLine("Server: " + msg);
                                    heartbeatR = true;
                                }
                            }
                            heartbeat = true;
                        }
                        else
                        {
                            heartbeatC.Client.Disconnect(true);
                        }
                    }
                }

Answer 1

我认为你的问题在于这一行：

$msg = $host + " connected;";

PHP 中的字符串连接运算符是 .：

$msg = $host . " connected;";