C TCP 伺服器客戶端Socket程式設計

server.cpp

#include

#include

using namespace std;

#include

#define buf_size 64

#pragma comment(lib,"ws2_32.lib")

int main()

//建立監聽的socket

sserver=socket(af_inet,sock_stream,ipproto_tcp);

if(invalid_socket==sserver)

//設定伺服器socket位址

sockaddr_in addrserv;

addrserv.sin_family=af_inet;

addrserv.sin_port=htons(1298);

addrserv.sin_addr.s_un.s_addr=htonl(inaddr_any);

//繫結sockets server

retval=bind(sserver,(const struct sockaddr*)&addrserv,sizeof(sockaddr_in));

if(socket_error==retval)

//在sockets server上進行監聽

retval=listen(sserver,1);

if(socket_error==retval)

//接收來自客戶端的請求

printf("tcpserver start...\n");

sockaddr_in addrclient;

int addrclientlen=sizeof(addrclient);

sclient=accept(sserver,(sockaddr far*)&addrclient,&addrclientlen);

if(invalid_socket==sclient)

//迴圈接收客戶端的資料，直接客戶端傳送quit命令後退出

while(true)

//獲取當前系統時間

systemtime st;

getlocaltime(&st);

char sdatetime[30];

sprintf(sdatetime,"%4d-%2d-%2d-%2d:%2d:%2d:%2d",st.wyear,st.wmonth,st.wday,st.whour,st.wminute,st.wsecond);

//列印輸出的資訊

printf("%s,recv from client [%s:%d]:%s\n",sdatetime,inet_ntoa(addrclient.sin_addr),addrclient.sin_port,buf);

//如果客戶端傳送quit字串，則伺服器退出

if(strcmp(buf,"quit")==0)

//否則向客戶端傳送回顯字串

else

//釋放socket

closesocket(sserver);

closesocket(sclient);

wsacleanup();

//暫停，按任意鍵退出

system("pause");

return 0;}}

}client.cpp

#include

#include

#include

using namespace std;

#include

#define buf_size 64

#pragma comment(lib,"ws2_32.lib")

int main()

//建立監聽的socket

shost=socket(af_inet,sock_stream,ipproto_tcp);

if(invalid_socket==shost)

//設定伺服器socket位址

servaddr.sin_family=af_inet;

servaddr.sin_addr.s_un.s_addr=inet_addr("127.0.0.1");

//在實際應用中，建議將伺服器的ip位址和埠號儲存在配置檔案中

servaddr.sin_port=htons(1298);

//計算位址的長度

int sserveraddlen=sizeof(servaddr);

//鏈結伺服器

retval=connect(shost,(lpsockaddr)&servaddr,sizeof(servaddr));

if(socket_error==retval)

while(true)

//接收伺服器回傳的資料

retval=recv(shost,buf,sizeof(buf)+1,0);

printf("recv from server : %s\n",buf);

if(strcmp(buf,"quit")==0)

}return 0;

}

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