监听套接字,通讯套接字,初始化网卡,多线程。想查自己的IP,ipconfig
服务端
#include "stdafx.h"
#include <WinSock2.h> //套接字 socket CS--->Client Server
#include <iostream>
#include <Windows.h>
using namespace std; #pragma comment(lib,"ws2_32.lib") //动态库的静态加载 DWORD WINAPI THreadFunction(LPVOID lParam);
SOCKET ClientSocket;
int main()
{
//如果要使用ws2_32.lib模块下的函数时,要初始化该模块 WSADATA wsaData = {};
WORD wVersion = MAKEWORD(,); //宏,第一个2放在低8位上,第二个放在高8位上。 if(WSAStartup(wVersion,&wsaData)!=) //一参数为WORD类型,IN,需要赋好值传进来,二参数为LP指针,OUT,需要初始化,传进来接受数据
{
printf("Init Socket Error\r\n");
return ;
} //返回值为0,成功
//套接字相当于保安
SOCKET ListenSocket;//监听套接字 Server socket大写为数据类型,小写为函数 (数据流) (数据报)
ListenSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); //创建监听套接字,第一参数服务于什么协议是TCP还是UDP,第二参数中SOCK_STREAM流传送适用于TCP,一个一个,SOCK_DGRAM报传送适用于UDP,一页一页的
if(ListenSocket==INVALID_SOCKET) //创建失败,套接字不存在
{
WSACleanup();
return ;
}
//初始化网卡,相当于给保安建个房子
SOCKADDR_IN LocalAddress;
LocalAddress.sin_family = AF_INET; //IP不要写死
LocalAddress.sin_addr.S_un.S_addr = INADDR_ANY; //传IP地址的两种方式,直接强制转换为u_long型,或者像下面一样一个一个输
LocalAddress.sin_port = htons(); // Host To net string //端口连接,不能冲突(0~1024不要用,已被买断,60000多后面的端口也不要用,被QQ买断) /*
LocalAddress.sin_addr.S_un.S.un_b.s_b1 = '192';
LocalAddress.sin_addr.S_un.S.un_b.s_b2 = '168';
LocalAddress.sin_addr.S_un.S.un_b.s_b3 = '1';
LocalAddress.sin_addr.S_un.S.un_b.s_b4 = '100';
*/ //绑定 让保安住到房子里 大数据小指针,解出三成员
if(bind(ListenSocket,(sockaddr*)&LocalAddress,sizeof(SOCKADDR_IN))==SOCKET_ERROR)
{
closesocket(ListenSocket); //套接字存在,关闭套接字回收资源
WSACleanup();
return ;
} //监听
listen(ListenSocket,); //队列里面有多少未决的连接 //Block 阻塞函数,信号不到达,得不到返回 TCP 上线请求
SOCKADDR_IN RemoteAddress; //客户端的IP地址
int iRemoteAddressLen = sizeof(SOCKADDR_IN);
ClientSocket = accept(ListenSocket,(sockaddr*)&RemoteAddress,&iRemoteAddressLen); //返回值为套接字 //启动一个线程
CreateThread(NULL,,(LPTHREAD_START_ROUTINE)THreadFunction,NULL,,NULL); while(true)
{
char szBufferData[0x1000] = {};
scanf("%s",szBufferData); send(ClientSocket,szBufferData,strlen(szBufferData),);
}
WSACleanup(); //库的回收
return ;
} DWORD WINAPI THreadFunction(LPVOID lParam)
{
while(true)
{
char szBufferData[0x1000] = {};
int iReturn = recv(ClientSocket,szBufferData,0x1000,);
szBufferData[iReturn] = '\0';
printf("%s\r\n",szBufferData);
}
} 客户端
#include "stdafx.h"
#include <WinSock2.h> //套接字 socket
#include <iostream>
#include <Windows.h>
using namespace std; #pragma comment(lib,"ws2_32.lib") //动态库的静态加载 DWORD WINAPI THreadFunction(LPVOID lParam);
SOCKET ClientSocket;//通讯套接字 Client
int main()
{
//如果要使用ws2_32.lib模块下的函数时,要初始化该模块 WSADATA wsaData = {};
WORD wVersion = MAKEWORD(,); if(WSAStartup(wVersion,&wsaData)!=)
{
printf("Init Socket Error\r\n");
return ;
} ClientSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if(ClientSocket==INVALID_SOCKET) //创建通讯套接字
{
WSACleanup();
return ;
}
//初始化网卡
SOCKADDR_IN ServerAddress;
ServerAddress.sin_family = AF_INET;
ServerAddress.sin_addr.S_un.S_addr = inet_addr("192.168.0.102");
ServerAddress.sin_port = htons(); connect(ClientSocket,(sockaddr*)&ServerAddress,sizeof(SOCKADDR_IN)); //返回值为int CreateThread(NULL,,(LPTHREAD_START_ROUTINE)THreadFunction,NULL,,NULL); while(true)
{
char szBufferData[0x1000] = {};
int iReturn = recv(ClientSocket,szBufferData,0x1000,);
szBufferData[iReturn] = '\0';
printf("%s\r\n",szBufferData);
}
WSACleanup(); //库的回收
return ;
} DWORD WINAPI THreadFunction(LPVOID lParam)
{
while(true)
{
char szBufferData[0x1000] = {};
scanf("%s",szBufferData); send(ClientSocket,szBufferData,strlen(szBufferData),);
}
}