问题描述

新手关于socket的小问题 各位大大来看看谢谢啦.。

socket的通信中 client端接受的消息总是慢一拍怎么回事

解决方案

原因是多了'n'：
scanf("%sn", cmd);
改成
scanf("%s", cmd);
也是OK的

解决方案二：

服务端代码：
#include "stdafx.h"
#include
#include
#pragma comment(lib,"ws2_32.lib")

int _tmain(int argc, _TCHAR* argv[])
{
BOOL bret = false;
do
{
WSADATA wsadata;
WSAStartup(MAKEWORD(2, 2), &wsadata);
if (2 != LOBYTE(wsadata.wVersion) || 2 != HIBYTE(wsadata.wVersion))
break;

    SOCKET socksever;
    socksever = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (INVALID_SOCKET == socksever)
        break;

    sockaddr_in addrsever = { 0 };
    addrsever.sin_family = AF_INET;
    addrsever.sin_port = htons(8383);

    if (SOCKET_ERROR == bind(socksever, (SOCKADDR*)&addrsever, sizeof(addrsever)))
        break;

    if (SOCKET_ERROR == listen(socksever, 5))
        break;
    SOCKET sockclient;
    sockclient= accept(socksever, nullptr, nullptr);
    if (INVALID_SOCKET == socksever)
        break;

    char cmd[MAXBYTE] = { 0 };
    while (true)
    {
        printf("please input your cmd:n");
        scanf("%sn", cmd);
        send(sockclient, cmd, strlen(cmd)+1, 0);

    }
    system("pause");
    bret = true;
} while (false);
WSACleanup();
return 0;

}

解决方案三：

这是客户端的：
#include "stdafx.h"
#include
#include
#include
#pragma comment (lib,"ws2_32.lib")

int _tmain(int argc, _TCHAR* argv[])
{
WSADATA wsadata;
WSAStartup(MAKEWORD(2, 2), &wsadata);
if (2 != LOBYTE(wsadata.wVersion) || 2 != HIBYTE(wsadata.wVersion))
exit(0);

    SOCKET sockclient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (INVALID_SOCKET == sockclient)
        exit(0);

    sockaddr_in addsever = { 0 };
    addsever.sin_family = AF_INET;
    addsever.sin_port = htons(8383);
    addsever.sin_addr.S_un.S_addr = inet_addr("192.168.23.7");

    if (SOCKET_ERROR == connect(sockclient, (SOCKADDR*)&addsever, sizeof(addsever)))
        exit(0);
    printf("call succeedn");

    int recvlen = { 0 };
    char message[MAXBYTE] = { 0 };
    while (true)
    {
    recvlen=recv(sockclient, message,MAXBYTE,0);
    if (recvlen>0)
    {
        printf(message);
        printf("n");
    }
    }

WSACleanup();
return 0;

}

解决方案四：

谢谢各位大大，帮小生一看

解决方案五：

谢谢各位大大，帮小生一看

解决方案六：

scanf("%sn", cmd);
把这个换成以下的语句试试（头文件增加 #include ）:
std::cin>>cmd;

解决方案七：

客户端接受的消息本来就是通过服务端转发的信息，，