server.c

#include "server.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main(int argc , char *argv[])

{
    // Build up socket
    char inputBuffer[256] = {0};
    char message[] = {"Hi,this is server.\n"};
    int sockfd = 0,forClientSockfd = 0;
    sockfd = socket(AF_INET , SOCK_STREAM , 0);

    if (sockfd == -1){
        printf("Fail to create a socket.");
    }

    // The connection of socket
    struct sockaddr_in serverInfo,clientInfo;
    int addrlen = sizeof(clientInfo);
    memset(&serverInfo, 0, sizeof(serverInfo));

    serverInfo.sin_family = PF_INET;
    serverInfo.sin_addr.s_addr = INADDR_ANY;
    serverInfo.sin_port = htons(1234);
    bind(sockfd,(struct sockaddr *)&serverInfo,sizeof(serverInfo));
    listen(sockfd,5);

    while(1){
        forClientSockfd = accept(sockfd,(struct sockaddr *) &clientInfo, (socklen_t *) &addrlen);
        recv(forClientSockfd,inputBuffer,sizeof(inputBuffer),0);
        printf("Receive: %s", inputBuffer);
	send(forClientSockfd,message,sizeof(message),0);
        printf("Get:%s\n",inputBuffer);
    }
    return 0;
}