socket网络编程--基于windows
#pragma once#define WIN32
#include<iostream>
#include<stdio.h>
#include "stdafx.h"
#include<sys/types.h>
#include<WS2tcpip.h>
#pragma comment(lib, "ws2_32.lib")
using namespace std;
//typedef int(*DLLFunc)(int,int);//int是该方法形参的类型，有几个参数就定义几个。
//typedef int(*DLLFunc2)();
DWORD WINAPI ThreadFunc(HANDLE Thread)
{
//HINSTANCE hInstLibrary = LoadLibrary(_T("E:\\V3.0\\新建文件夹\\MyDll.dll"));//要写清楚路径,注意双斜杠
//if (GetLastError() != 0)
//{
//std::cout << GetLastError();//打印失败信息
//}
//if (hInstLibrary == NULL)
//{
//FreeLibrary(hInstLibrary);
//return 0;
//}
//DLLFunc2 dllFunc3;
//dllFunc3 = (DLLFunc2)GetProcAddress(hInstLibrary, "SocketSevert");
//int i3 = dllFunc3();
//cout << i3 << endl;
//FreeLibrary(hInstLibrary);
//服务器端0成功；22套接字；3绑定；4监听
WORD sockVersion = MAKEWORD(2, 2);
WSADATA wsaData;
if (WSAStartup(sockVersion, &wsaData) != 0)
{
printf("-3");
//return -3;
}
// 创建通信端点：套接字
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0)
{
printf("服务器创建套接字失败！\n");
}
else
{
printf("服务器创建套接字成功！\n");
}
struct sockaddr_in my_addr;
my_addr.sin_family = AF_INET;
my_addr.sin_port = htons(8888);
my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
//绑定
int err_log = bind(sockfd, (struct sockaddr*)&my_addr, sizeof(my_addr));
if (err_log != 0)
{
printf("服务器绑定失败！\n");
}
else
{
printf("服务器绑定成功！\n");
}
//监听
err_log = listen(sockfd, 10);
if (err_log != 0)
{
printf("服务器监听失败！\n");
}
else
{
printf("服务器监听成功！\n");
}
Sleep(10);
int i = 0;
while (1)
{
i++;
struct sockaddr_in client_addr;
char cli_ip = "";
socklen_t cliaddr_len = sizeof(client_addr);
//成功返回一个新的socket文件描述符，用于和客户端通信，失败返回-1
//表示三方握手完成，下一步服务器调用accept()接受连接
int connfd = accept(sockfd, (struct sockaddr*)&client_addr, &cliaddr_len);
if (connfd < 0)
{
printf("accept第%d次失败\n",i);
continue;
}
else
{
printf("accept第%d次成功\n", i);
}
//接收数据
char recv_buf = { 0 };
while (recv(connfd, recv_buf, sizeof(recv_buf), 0) > 0)
{
i = sizeof(recv_buf);
while (i--)
printf("接收数据：\n%c\n",recv_buf);
}
}
return 0;
}
int main()
{
//DLLFunc2 dllFunc2;
//// hdll=LoadLibraryEx("*.dll", NULL, LOAD_WITH_ALTERED_SEARCH_PATH)，若dll库中有其他dll的调用，就使用此语句
//HINSTANCE hInstLibrary = LoadLibrary(_T("E:\\V3.0\\新建文件夹\\MyDll.dll"));//要写清楚路径,注意双斜杠
//if (GetLastError() != 0)
//{
//std::cout << GetLastError();//打印失败信息
//}
//if (hInstLibrary == NULL)
//{
//FreeLibrary(hInstLibrary);
//return 0;
//}
//线程---服务器
HANDLE Thread;
DWORD dwThreadId;
Thread = ::CreateThread(NULL, 0, ThreadFunc, NULL, 0, &dwThreadId);
//cout << "The new thread ID is :" << dwThreadId << endl;
//客户端
WORD sockVersion = MAKEWORD(2, 2);
WSADATA wsaData;
if (WSAStartup(sockVersion, &wsaData) != 0)
{
return -1;
}
SOCKET sockClient = NULL;
SOCKADDR_IN addrSrv;
//addrSrv.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
inet_pton(AF_INET, "128.0.0.1", (void*)&addrSrv.sin_addr.S_un.S_addr);
addrSrv.sin_family = AF_INET;
addrSrv.sin_port = htons(8888);
//创建套接字
sockClient = socket(AF_INET, SOCK_STREAM, 0);
if (sockClient < 0)
{
printf("创建套接字失败！\n");
}
else
{
printf("创建套接字成功！\n");
}
//网络连接
if (connect(sockClient, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)) == SOCKET_ERROR)
{
printf("connect失败！\n");
}
else
{
printf("网络连接成功！\n");
char send_buf = { 'c','d' };
int nRecv = ::send(sockClient, send_buf, sizeof(send_buf), 0);
if (nRecv < 0)
{
printf("发送失败！\n");
}
else
{
printf("发送成功！\n");
}
}
//SocketConnect是DLL库里定义的方法
//dllFunc2 = (DLLFunc2)GetProcAddress(hInstLibrary, "SocketConnect");
//if (dllFunc2 == NULL)
//{
//FreeLibrary(hInstLibrary);
//return 0;
//}
//int i2 = dllFunc2();
//cout << i2 << endl;
//FreeLibrary(hInstLibrary);
::WaitForSingleObject(Thread, INFINITE);
::CloseHandle(Thread);
return 0;
}
页:
[1]