[소켓프로그래밍] 서버 예제

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <winsock2.h> #pragma comment( lib,"ws2_32.lib") /*서버 예제 */ void MyTemp() { WSADATA wsaData; if(0 != WSAStartup(MAKEWORD(2,2), &wsaData)) { printf("초기화에 성공하지 못하였습니다. \n"); } else { printf("초기화에 성공하였습니다. \n"); } } int MyServer(int port) { int re; int size; int sid; struct sockaddr_in saddr; int cid; struct sockaddr_in caddr; char msg[80]; MyTemp(); sid = socket(PF_INET, SOCK_STREAM, 0); if(-1 == sid) { return -1; } memset(&saddr, 0, sizeof(saddr)); saddr.sin_family=AF_INET; saddr.sin_addr.S_un.S_addr=htonl(INADDR_ANY); saddr.sin_port=htons(port); re = bind(sid,(struct sockaddr*)&saddr,sizeof(saddr)); if(-1 == re) { return -2; } re = listen(sid,5); if(-1 == re) { return -3; } size = sizeof(caddr); cid = accept(sid,(struct sockaddr*)&caddr,&size); if(-1 == cid) { return -4; } sprintf(msg,"j0ker's server\n"); send(cid,msg,sizeof(msg),0); closesocket(cid); WSACleanup(); } int main(void) { int re; int port; printf("Input Port : "); scanf("%d",&port); re = MyServer(port); if( re < 0) { printf("Error ... %d\n",re); } return 0; }