服务器端
#include
<
Winsock2.h
>
#include < stdio.h >
#include < stdlib.h >
#pragma comment (lib, " ws2_32.lib " )
// 服务器使用的端口号为5050
#define DEFAULT_PORT 5050
// 数据缓冲区长度
#define BUFFER_LENGTH 1024
void main()
{
//服务器端口
int iPort = DEFAULT_PORT;
WSADATA wsaData;
SOCKET sListen,sAccept;
//存放主机名称
char hostname[256];
//客户地址长度
int iLen;
//发送的数据长度
int iSend;
//接收的数据长度
int iRecv;
//发送给客户的信息
char send_buf[1024];
//接收数据的缓冲区
char recv_buf[BUFFER_LENGTH];
//服务器和客户的地址
struct sockaddr_in ser,cli;
PHOSTENT hostinfo;
printf("--------------------------\n");
printf("基于TCP的通信程序的服务器\n");
//加载 winsock库
if(WSAStartup(MAKEWORD(2,2),&wsaData) != 0)
{
printf("Failed to load Winsock.\n");
return;
}
//获得主机名
if(gethostname(hostname,sizeof(hostname)) != 0)
{
printf("gethostname() Error:%u\n",WSAGetLastError());
return;
}
if((hostinfo = gethostbyname(hostname) )!= NULL)
{
//如果获得主机名成功的话,调用inet_ntoa()函数取得IP地址
LPCSTR ip = inet_ntoa(*(struct in_addr *)*hostinfo->h_addr_list);
printf("本机的IP地址 : %s\n",ip);//输出ip地址
printf("本机的名称是 : %s\n",hostname);
}
printf("--------------------------\n");
//创建服务器端套接口
sListen = socket(AF_INET,SOCK_STREAM,0);
if(sListen == INVALID_SOCKET)
{
printf("socket() Failed:%d\n",WSAGetLastError());
return;
}
//以下绑定服务器端地址
ser.sin_family = AF_INET;
//端口号:htons()函数把一个二字节字节顺序的数转换为网络字节顺序的数
ser.sin_port = htons(iPort);
//htonl()函数把一个四字节字节的数转换为网络系统字节顺序的数
//使用系统指定的IP地址 INADDR_ANY
ser.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(sListen,(LPSOCKADDR)&ser,sizeof(ser)) == SOCKET_ERROR)
{
printf("bind() Failed:%d\n",WSAGetLastError());
return;
}
//进入监听状态
if(listen(sListen,5) == SOCKET_ERROR)
{
printf("listen() Failed:%d\n",WSAGetLastError());
return;
}
//初始化客户地址长度参数
iLen = sizeof(cli);
//初始化接收缓冲区
memset(recv_buf,0,sizeof(recv_buf));
//进入一个无限循环,等待客户的连接请求
while(1)
{
printf("等待客户的连接请求\n");
sAccept = accept(sListen,(struct sockaddr*)&cli,&iLen);
if(sAccept == INVALID_SOCKET)
{
printf("accept() Failed:&d\n",WSAGetLastError());
break;
}
printf("建立TCP连接成功!\n");
printf("--------------------------\n");
//进入一个无限循环,与客户交互
while(1){
//从客户端接收数据
iRecv = recv(sAccept,recv_buf,BUFFER_LENGTH,0);
if(iRecv == SOCKET_ERROR)
{
printf("recv() Failed.:%d\n",WSAGetLastError());
continue;
}
else if(iRecv == 0) break;
else
{
//输出接收到的数据
printf("客户端说 : %s",recv_buf);
//输出客户IP地址和端口号
printf("(来自:%s:%d)\n",inet_ntoa(cli.sin_addr),ntohs(cli.sin_port));
}
//给连接的客户发送信息
printf("发送消息: ");
gets(send_buf);
iSend = send(sAccept,send_buf,sizeof(send_buf),0);
if(iSend == SOCKET_ERROR)
{
printf("send() Failed:%d\n",WSAGetLastError());
break;
}
else if(iSend == 0) break;
else
{
printf("发送成功.\n");
printf("--------------------------\n");
}
}
//关闭接收套接口
closesocket(sAccept);
}
//关闭监听套接口
closesocket(sListen);
//卸载winsock库
WSACleanup();
}
#include < stdio.h >
#include < stdlib.h >
#pragma comment (lib, " ws2_32.lib " )
// 服务器使用的端口号为5050
#define DEFAULT_PORT 5050
// 数据缓冲区长度
#define BUFFER_LENGTH 1024
void main()
{
//服务器端口
int iPort = DEFAULT_PORT;
WSADATA wsaData;
SOCKET sListen,sAccept;
//存放主机名称
char hostname[256];
//客户地址长度
int iLen;
//发送的数据长度
int iSend;
//接收的数据长度
int iRecv;
//发送给客户的信息
char send_buf[1024];
//接收数据的缓冲区
char recv_buf[BUFFER_LENGTH];
//服务器和客户的地址
struct sockaddr_in ser,cli;
PHOSTENT hostinfo;
printf("--------------------------\n");
printf("基于TCP的通信程序的服务器\n");
//加载 winsock库
if(WSAStartup(MAKEWORD(2,2),&wsaData) != 0)
{
printf("Failed to load Winsock.\n");
return;
}
//获得主机名
if(gethostname(hostname,sizeof(hostname)) != 0)
{
printf("gethostname() Error:%u\n",WSAGetLastError());
return;
}
if((hostinfo = gethostbyname(hostname) )!= NULL)
{
//如果获得主机名成功的话,调用inet_ntoa()函数取得IP地址
LPCSTR ip = inet_ntoa(*(struct in_addr *)*hostinfo->h_addr_list);
printf("本机的IP地址 : %s\n",ip);//输出ip地址
printf("本机的名称是 : %s\n",hostname);
}
printf("--------------------------\n");
//创建服务器端套接口
sListen = socket(AF_INET,SOCK_STREAM,0);
if(sListen == INVALID_SOCKET)
{
printf("socket() Failed:%d\n",WSAGetLastError());
return;
}
//以下绑定服务器端地址
ser.sin_family = AF_INET;
//端口号:htons()函数把一个二字节字节顺序的数转换为网络字节顺序的数
ser.sin_port = htons(iPort);
//htonl()函数把一个四字节字节的数转换为网络系统字节顺序的数
//使用系统指定的IP地址 INADDR_ANY
ser.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(sListen,(LPSOCKADDR)&ser,sizeof(ser)) == SOCKET_ERROR)
{
printf("bind() Failed:%d\n",WSAGetLastError());
return;
}
//进入监听状态
if(listen(sListen,5) == SOCKET_ERROR)
{
printf("listen() Failed:%d\n",WSAGetLastError());
return;
}
//初始化客户地址长度参数
iLen = sizeof(cli);
//初始化接收缓冲区
memset(recv_buf,0,sizeof(recv_buf));
//进入一个无限循环,等待客户的连接请求
while(1)
{
printf("等待客户的连接请求\n");
sAccept = accept(sListen,(struct sockaddr*)&cli,&iLen);
if(sAccept == INVALID_SOCKET)
{
printf("accept() Failed:&d\n",WSAGetLastError());
break;
}
printf("建立TCP连接成功!\n");
printf("--------------------------\n");
//进入一个无限循环,与客户交互
while(1){
//从客户端接收数据
iRecv = recv(sAccept,recv_buf,BUFFER_LENGTH,0);
if(iRecv == SOCKET_ERROR)
{
printf("recv() Failed.:%d\n",WSAGetLastError());
continue;
}
else if(iRecv == 0) break;
else
{
//输出接收到的数据
printf("客户端说 : %s",recv_buf);
//输出客户IP地址和端口号
printf("(来自:%s:%d)\n",inet_ntoa(cli.sin_addr),ntohs(cli.sin_port));
}
//给连接的客户发送信息
printf("发送消息: ");
gets(send_buf);
iSend = send(sAccept,send_buf,sizeof(send_buf),0);
if(iSend == SOCKET_ERROR)
{
printf("send() Failed:%d\n",WSAGetLastError());
break;
}
else if(iSend == 0) break;
else
{
printf("发送成功.\n");
printf("--------------------------\n");
}
}
//关闭接收套接口
closesocket(sAccept);
}
//关闭监听套接口
closesocket(sListen);
//卸载winsock库
WSACleanup();
}
客户端
#include
<
Winsock2.h
>
#include < stdio.h >
#include < stdlib.h >
#pragma comment (lib, " ws2_32.lib " )
// 服务器使用的端口号为5050
#define DEFAULT_PORT 5050
#define DATA_BUFFER 1024
void main()
{
WSADATA wsaData;
SOCKET sClient;
int iPort = DEFAULT_PORT;
//接收数据的缓冲
int iSend;
int iRecv;
//要发送给服务器的信息
char send_buf[1024];
//接收数据的缓冲
char recv_buf[DATA_BUFFER];
//服务器端地址
struct sockaddr_in ser;
printf("--------------------------\n");
printf("基于TCP的通信程序的客户端\n");
//提示在命令持中输入法服务器IP地址
printf("输入服务器IP:");
char ipz[32];
gets(ipz);
//char * ipz=&ip;
//接收数据的缓冲区初始化
memset(recv_buf,0,sizeof(recv_buf));
if(WSAStartup(MAKEWORD(2,2),&wsaData) != 0)
{
printf("Failed to load Winsock.\n");
return;
}
//填写要连接的服务器地址信息
ser.sin_family = AF_INET;
ser.sin_port = htons(iPort);
//inet_addr()函数将命令持的点扫IP地址转化为用二进制表示的网络顺序的IP地址
//ser.sin_addr.s_addr = inet_addr(argv[1]);
ser.sin_addr.s_addr = inet_addr(ipz);
//建立客户端流式套接口
sClient = socket(AF_INET,SOCK_STREAM,0);
if(sClient == INVALID_SOCKET)
{
printf("socket() Failed:%d\n",WSAGetLastError());
return;
}
//请求与服务器端建立TCP连接
if(connect(sClient,(struct sockaddr*)&ser,sizeof(ser)) == INVALID_SOCKET)
{
printf("connect() Failed.:%d\n",WSAGetLastError());
return;
}
else
{
printf("建立TCP连接成功!\n");
printf("--------------------------\n");
//进入一个无限循环,与服务器交互
while(1){
//向服务器发送数据
printf("发送消息:");
gets(send_buf);
iSend = send(sClient,send_buf,sizeof(send_buf),0);
if(iSend == SOCKET_ERROR)
{
printf("send() Failed:%d\n,WSAGetLastError()");
return;
}
else if(iSend == 0)
return;
else
printf("发送成功.\n");
//从服务器端接收数据
iRecv = recv(sClient,recv_buf,sizeof(recv_buf),0);
if(iRecv == SOCKET_ERROR)
{
printf("recv() Failed:%d\n",WSAGetLastError());
return;
}
else if(iRecv == 0)
return;
else
{
//显示从服务器收到的信息
printf("服务器说:%s\n",recv_buf);
printf("--------------------------\n");
}
}
}
closesocket(sClient);
WSACleanup();
}
#include < stdio.h >
#include < stdlib.h >
#pragma comment (lib, " ws2_32.lib " )
// 服务器使用的端口号为5050
#define DEFAULT_PORT 5050
#define DATA_BUFFER 1024
void main()
{
WSADATA wsaData;
SOCKET sClient;
int iPort = DEFAULT_PORT;
//接收数据的缓冲
int iSend;
int iRecv;
//要发送给服务器的信息
char send_buf[1024];
//接收数据的缓冲
char recv_buf[DATA_BUFFER];
//服务器端地址
struct sockaddr_in ser;
printf("--------------------------\n");
printf("基于TCP的通信程序的客户端\n");
//提示在命令持中输入法服务器IP地址
printf("输入服务器IP:");
char ipz[32];
gets(ipz);
//char * ipz=&ip;
//接收数据的缓冲区初始化
memset(recv_buf,0,sizeof(recv_buf));
if(WSAStartup(MAKEWORD(2,2),&wsaData) != 0)
{
printf("Failed to load Winsock.\n");
return;
}
//填写要连接的服务器地址信息
ser.sin_family = AF_INET;
ser.sin_port = htons(iPort);
//inet_addr()函数将命令持的点扫IP地址转化为用二进制表示的网络顺序的IP地址
//ser.sin_addr.s_addr = inet_addr(argv[1]);
ser.sin_addr.s_addr = inet_addr(ipz);
//建立客户端流式套接口
sClient = socket(AF_INET,SOCK_STREAM,0);
if(sClient == INVALID_SOCKET)
{
printf("socket() Failed:%d\n",WSAGetLastError());
return;
}
//请求与服务器端建立TCP连接
if(connect(sClient,(struct sockaddr*)&ser,sizeof(ser)) == INVALID_SOCKET)
{
printf("connect() Failed.:%d\n",WSAGetLastError());
return;
}
else
{
printf("建立TCP连接成功!\n");
printf("--------------------------\n");
//进入一个无限循环,与服务器交互
while(1){
//向服务器发送数据
printf("发送消息:");
gets(send_buf);
iSend = send(sClient,send_buf,sizeof(send_buf),0);
if(iSend == SOCKET_ERROR)
{
printf("send() Failed:%d\n,WSAGetLastError()");
return;
}
else if(iSend == 0)
return;
else
printf("发送成功.\n");
//从服务器端接收数据
iRecv = recv(sClient,recv_buf,sizeof(recv_buf),0);
if(iRecv == SOCKET_ERROR)
{
printf("recv() Failed:%d\n",WSAGetLastError());
return;
}
else if(iRecv == 0)
return;
else
{
//显示从服务器收到的信息
printf("服务器说:%s\n",recv_buf);
printf("--------------------------\n");
}
}
}
closesocket(sClient);
WSACleanup();
}