C++网络通信 Socket

妖狐艹你老母 2022-11-28 13:26 159阅读 0赞

**目录**

服务端：

客户端：

客户端第二种写法：不使用inet\_pton函数

--------------------

## 服务端： ##

\#include <iostream>

\#include <stdio.h>

\#include <winsock2.h>

\#include <Ws2tcpip.h>

\#pragma comment(lib,"ws2\_32.lib")

\#define \_WINSOCK\_DEPRECATED\_NO\_WARNINGS 1

using namespace std;

int main(int argc, char\* argv\[\])

//初始化WSA

WORD sockVersion = MAKEWORD(2, 2);

WSADATA wsaData;

if (WSAStartup(sockVersion, &wsaData) != 0)

return 0;

//创建套接字

SOCKET slisten = socket(AF\_INET, SOCK\_STREAM, IPPROTO\_TCP);

if (slisten == INVALID\_SOCKET)

printf("socket error !");

return 0;

//绑定IP和端口

sockaddr\_in sin;

sin.sin\_family = AF\_INET;

sin.sin\_port = htons(8888);

sin.sin\_addr.S\_un.S\_addr = INADDR\_ANY;

if (bind(slisten, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET\_ERROR)

printf("bind error !");

//开始监听

if (listen(slisten, 5) == SOCKET\_ERROR)

printf("listen error !");

return 0;

//循环接收数据

SOCKET sClient;

sockaddr\_in remoteAddr;

int nAddrlen = sizeof(remoteAddr);

char revData\[255\];

while (true)

printf("等待连接...\\n");

sClient = accept(slisten, (SOCKADDR \*)&remoteAddr, &nAddrlen);

if (sClient == INVALID\_SOCKET)

printf("accept error !");

continue;

char ip\[100\];

if (inet\_ntop(AF\_INET, &remoteAddr.sin\_addr.S\_un.S\_addr, ip, 100) == NULL)

cout << "error" << endl;

return \-1;

cout << ip << endl; //宽字符记得用宽字符的方式进行输出

//接收数据

int ret = recv(sClient, revData, 255, 0);

if (ret > 0)

revData\[ret\] = 0x00;

printf(revData);

//发送数据

const char \* sendData = "你好，TCP客户端！\\n";

send(sClient, sendData, strlen(sendData), 0);

closesocket(sClient);

closesocket(slisten);

WSACleanup();

return 0;

## 客户端： ##

\#include<iostream>

\#include<WINSOCK2.H>

\#include<STDIO.H>

\#include<cstring>

\#include <Ws2tcpip.h>

\#pragma comment(lib, "ws2\_32.lib")

\#define \_WINSOCK\_DEPRECATED\_NO\_WARNINGS 1

using namespace std;

int main()

WORD sockVersion = MAKEWORD(2, 2);

WSADATA data;

if (WSAStartup(sockVersion, &data) != 0)

return 0;

while (true) \{

SOCKET sclient = socket(AF\_INET, SOCK\_STREAM, IPPROTO\_TCP);

if (sclient == INVALID\_SOCKET)

printf("invalid socket!");

return 0;

sockaddr\_in serAddr;

serAddr.sin\_family = AF\_INET;

serAddr.sin\_port = htons(8888);

inet\_pton(AF\_INET, "127.0.0.1", &serAddr.sin\_addr.S\_un.S\_addr);

if (connect(sclient, (sockaddr \*)&serAddr, sizeof(serAddr)) == SOCKET\_ERROR)

\{  //连接失败

printf("connect error !");

closesocket(sclient);

return 0;

char data\[1024\];

cin >> data;

const char \* sendData;

sendData = data;   //string转const char\*

//char \* sendData = "你好，TCP服务端，我是客户端\\n";

send(sclient, sendData, strlen(sendData), 0);

//send()用来将数据由指定的socket传给对方主机

//int send(int s, const void \* msg, int len, unsigned int flags)

//s为已建立好连接的socket，msg指向数据内容，len则为数据长度，参数flags一般设0

//成功则返回实际传送出去的字符数，失败返回-1，错误原因存于error

char recData\[255\];

int ret = recv(sclient, recData, 255, 0);

if (ret > 0) \{

recData\[ret\] = 0x00;

printf(recData);

closesocket(sclient);

WSACleanup();

return 0;

## 客户端第二种写法：不使用inet\_pton函数 ##

\#include<iostream>

\#define \_WINSOCK\_DEPRECATED\_NO\_WARNINGS 1

\#include<WINSOCK2.H>

\#include<STDIO.H>

\#include<cstring>

\#pragma comment(lib, "ws2\_32.lib")

using namespace std;

int main()

WORD sockVersion = MAKEWORD(2, 2);

WSADATA data;

if (WSAStartup(sockVersion, &data) != 0)

return 0;

while (true) \{

SOCKET sclient = socket(AF\_INET, SOCK\_STREAM, IPPROTO\_TCP);

if (sclient == INVALID\_SOCKET)

printf("invalid socket!");

return 0;

sockaddr\_in serAddr;

serAddr.sin\_family = AF\_INET;

serAddr.sin\_port = htons(8888);

serAddr.sin\_addr.S\_un.S\_addr = inet\_addr("127.0.0.1");

if (connect(sclient, (sockaddr \*)&serAddr, sizeof(serAddr)) == SOCKET\_ERROR)

\{  //连接失败

printf("connect error !");

closesocket(sclient);

return 0;

char data\[1024\];

cin >> data;

const char \* sendData;

sendData = data;   //string转const char\*

//char \* sendData = "你好，TCP服务端，我是客户端\\n";

send(sclient, sendData, strlen(sendData), 0);

char recData\[255\];

int ret = recv(sclient, recData, 255, 0);

if (ret > 0) \{

recData\[ret\] = 0x00;

printf(recData);

closesocket(sclient);

WSACleanup();

return 0;

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70][]

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C++网络通信 Socket

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