C++實現聊天程序

#include<iostream>
#include<WinSock2.h>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
void initialization();
int main(){
//定義長度變量
 int send_len=0;
 int recv_len=0;
 int len=0;
//定義發送緩沖區和接受緩沖區
 char send_buf[100];
 char recv_buf[100];
//定義服務端套接字，接受請求套接字
 SOCKET s_server;
 SOCKET s_accept;
//服務端地址客戶端地址
 SOCKADDR_IN server_addr;
 SOCKADDR_IN accept_addr;
 initialization();
//填充服務端信息
 server_addr.sin_family=AF_INET;
 server_addr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
 server_addr.sin_port=htons(1234);
//創建套接字
 s_server=socket(AF_INET,SOCK_STREAM,0);
 if(bind(s_server,(SOCKADDR *)&server_addr,sizeof(SOCKADDR))==SOCKET_ERROR){
  cout<<"套接字綁定失敗！"<<endl;
  WSACleanup();
 }else{
 cout<<"套接字綁定成功！"<<endl;
 }
//設置套接字為監聽狀態
 if(listen(s_server,SOMAXCONN)<0){
  cout<<"設置監聽狀態失敗！"<<endl;
  WSACleanup();
 }else{
 cout<<"設置監聽狀態成功！"<<endl;
 }
 cout<<"服務端正在監聽連接，請稍候...."<<endl;
//接受連接請求
 len=sizeof(SOCKADDR);
 s_accept=accept(s_server,(SOCKADDR *)&accept_addr,&len);
 if(s_accept==SOCKET_ERROR){
  cout<<"連接失敗！"<<endl;
  WSACleanup();
  return 0;
 }
 cout<<"連接建立，準備接受數據"<<endl;
//接收數據
 while(1){
  recv_len=recv(s_accept,recv_buf,100,0);
  if(recv_len<0){
   cout<<"接受失敗！"<<endl;
   break;
  }else{
  cout<<"客戶端信息:"<<recv_buf<<endl;
  }
  cout<<"請輸入回復信息:";
  cin>>send_buf;
  send_len=send(s_accept,send_buf,100,0);
  if(send_len<0){
   cout<<"發送失敗！"<<endl;
   break;
  }
 }
 //關閉套接字
 closesocket(s_server);
 closesocket(s_accept);
//釋放DLL資源
 WSACleanup();
return 0;
}
void initialization(){
 //初始化套接字庫
 WORD w_req=MAKEWORD(2,2);//版本號
 WSADATA wsadata;
 int err;
 err = WSAStartup(w_req,&wsadata);
 if(err!=0){
  cout<<"初始化套接字庫失敗！"<<endl;
 }else{
 cout<<"初始化套接字庫成功！"<<endl;
 }
//檢測版本號
 if(LOBYTE(wsadata.wVersion)!=2||HIBYTE(wsadata.wHighVersion)!=2){
  cout<<"套接字庫版本號不符！"<<endl;
  WSACleanup();
 }else{
 cout<<"套接字庫版本正確！"<<endl;
 }
//填充服務端地址信息
 
}

#include<iostream>
#include<WinSock2.h>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
void initialization();
int main(){
//定義長度變量
 int send_len=0;
 int recv_len=0;
//定義發送緩沖區和接受緩沖區
 char send_buf[100];
 char recv_buf[100];
//定義服務端套接字，接受請求套接字
 SOCKET s_server;
//服務端地址客戶端地址
 SOCKADDR_IN server_addr;
 initialization();
//填充服務端信息
 server_addr.sin_family=AF_INET;
 server_addr.sin_addr.S_un.S_addr=inet_addr("192.168.1.1");
 server_addr.sin_port=htons(1234);
//創建套接字
 s_server=socket(AF_INET,SOCK_STREAM,0);
 if(connect(s_server,(SOCKADDR *)&server_addr,sizeof(SOCKADDR))==SOCKET_ERROR){
  cout<<"服務器連接失敗！"<<endl;
  WSACleanup();
 }else{
 cout<<"服務器連接成功！"<<endl;
 }
 
//發送,接收數據
 while(1){
  cout<<"請輸入發送信息:";
  cin>>send_buf;
  send_len=send(s_server,send_buf,100,0);
  if(send_len<0){
   cout<<"發送失敗！"<<endl;
   break;
  }
  recv_len=recv(s_server,recv_buf,100,0);
  if(recv_len<0){
   cout<<"接受失敗！"<<endl;
   break;
  }else{
  cout<<"服務端信息:"<<recv_buf<<endl;
  }
  
 }
 //關閉套接字
 closesocket(s_server);
//釋放DLL資源
 WSACleanup();
return 0;
}
void initialization(){
 //初始化套接字庫
 WORD w_req=MAKEWORD(2,2);//版本號
 WSADATA wsadata;
 int err;
 err = WSAStartup(w_req,&wsadata);
 if(err!=0){
  cout<<"初始化套接字庫失敗！"<<endl;
 }else{
 cout<<"初始化套接字庫成功！"<<endl;
 }
//檢測版本號
 if(LOBYTE(wsadata.wVersion)!=2||HIBYTE(wsadata.wHighVersion)!=2){
  cout<<"套接字庫版本號不符！"<<endl;
  WSACleanup();
 }else{
 cout<<"套接字庫版本正確！"<<endl;
 }
//填充服務端地址信息
 
}