无法读取从python上的TCP客户端发送到C中的TCP服务器的数据#

Question

我有一个用C#编写的windows服务，它打开了一个TCP套接字。我已经通过telnet连接并测试了这个TCP套接字，我能够通过putty和telnet协议向套接字发送和接收消息。当与一个小型python脚本连接时，该脚本能够接收消息，但无法发送消息以便C#server接收消息。服务器的代码为：

IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
TcpListener listener = new TcpListener(ipAddress, 5555);
listener.Start();


Thread whileThread = new Thread(() =>
{
    while (true)
    {
        TcpClient client = listener.AcceptTcpClient();
        Thread childThread = new Thread(() =>
        {

            NetworkStream stream = client.GetStream();
            StreamReader streamreader = new StreamReader(client.GetStream(), Encoding.ASCII);
            string line = null;
            WriteToNetworkStream(stream, "Connected to the service");
            eventLog1.WriteEntry("TCP Socket opened");
            eventLog1.WriteEntry((GetState(client) == TcpState.Established).ToString()); //this does return True.
            while ((line = streamreader.ReadLine()) != "<EOF>" && GetState(client) == TcpState.Established)
            {
                eventLog1.WriteEntry(line);
            }
            eventLog1.WriteEntry("TCP Socket closed");

            stream.Close();
            client.Close();
        });

        childThread.Start();

    } 
});
whileThread.Start();

另一侧的python脚本是：

import socket
import time

TCP_IP = '127.0.0.1'
TCP_PORT = 5555
BUFFER_SIZE = 1024

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TCP_IP, TCP_PORT))
time.sleep(1)
s.send("this is a test")
time.sleep(10)
data = s.recv(BUFFER_SIZE)
print(data)

消息“this is a test”（这是一个测试）从未被另一方接收到，但“TCP套接字关闭”直到时间过后才被记录。睡眠（10）完成，表明C#确实识别出某种延长的连接。此外，数据变量确实包含预期的“连接到服务”，表明服务器可以向客户端发送数据。正如我前面所说，当尝试使用带有putty的telnet发送和接收消息时，这确实可以正常工作

Answer 1

您是否尝试过从网络流中读取字节？我不能说这是否会产生影响，但值得一试，看看是否有实际字节进入：

NetworkStream stream = client.GetStream();
Byte[] bytes = new Byte[256]; //whatever size is appropriate
int bytesRead;
string data;
while ((bytesRead = stream.Read(bytes, 0, bytes.Length)) != 0)
{
    data = System.Text.Encoding.ASCII.GetString(bytes, 0, bytesRead);
    // ......
}