Question

我已经尝试使用Python客户端，一切正常，但是使用C ++客户端，数据包无法到达Python服务器。

客户端和服务器都在同一台计算机上运行。我也禁用了Windows防火墙并获得了相同的结果。 Python服务器正在侦听端口50000.对于IP地址，我尝试过localhost和127.0.0.1

Python服务器代码：

import socket

HOST, PORT = "localhost", 50000

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind((HOST, PORT))

while 1:
    data, info = s.recvfrom(4096)
    print 'got' + repr(data)

C ++客户端代码：

#include <string>
#include <WinSock2.h>
#include <Ws2tcpip.h>

#pragma comment(lib, "ws2_32.lib")
using namespace std;

int main() {
    const char* pkt = "Message to be sent";
    const char* host = "localhost"; // tried 127.0.0.1 here as well
    sockaddr_in dest;
    sockaddr_in local;
    WSAData data;
    WSAStartup(MAKEWORD(2, 2), &data);
    char srcAddr[INET_ADDRSTRLEN];
    char destAddr[INET_ADDRSTRLEN];

    local.sin_family = AF_INET;
    local.sin_addr.s_addr = inet_pton(AF_INET, host, srcAddr);
    local.sin_port = htons(0);

    dest.sin_family = AF_INET;
    dest.sin_addr.s_addr = inet_pton(AF_INET, host, destAddr);
    dest.sin_port = htons(50000);

    SOCKET s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    bind(s, (sockaddr *)&local, sizeof(local));

    sendto(s, pkt, sizeof(pkt), 0, (sockaddr *)&dest, sizeof(dest));

    return 0;
}

Python服务器没有在同一台机器上接收由C ++客户端（winsock2）发送的UDP数据包

0 个答案: