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net.c
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net.c
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/********************************************************************/
/* Copyright (C) SSE-USTC, 2012 */
/* */
/* FILE NAME : net.c */
/* PRINCIPAL AUTHOR : SLK */
/* SUBSYSTEM NAME : system */
/* MODULE NAME : net */
/* LANGUAGE : C */
/* TARGET ENVIRONMENT : Linux */
/* DATE OF FIRST RELEASE : 2012/11/22 */
/* DESCRIPTION : the interface to Linux system(socket) */
/********************************************************************/
/*
* Revision log:
*
* Created by SLK,2012/11/22
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h> /* internet socket */
#include <string.h>
#include <assert.h>
#include "net.h"
struct sockaddr_in clientAddr;
socklen_t addrLen = sizeof(struct sockaddr);
#define PrepareSocket(sockfd, addr, port) \
struct sockaddr_in serverAddr; \
serverAddr.sin_family = AF_INET; \
serverAddr.sin_port = htons(port); \
serverAddr.sin_addr.s_addr = inet_addr(addr); \
memset(&serverAddr.sin_zero, 0, 8); \
sockfd = socket(PF_INET,SOCK_STREAM,0);
void ShutdownSocket(int sockfd)
{
close(sockfd);
}
int InitServer(int sockfd, char* addr, int port)
{
PrepareSocket(sockfd, addr, port);
int ret = bind(sockfd, (struct sockaddr *)&serverAddr, sizeof(struct sockaddr));
if(ret == -1)
{
printf("Bind Error!\n");
close(sockfd);
exit(1);
}
listen(sockfd, MAX_CONNECT_QUEUE);
return sockfd;
}
int InitClient(int sockfd, char* addr, int port)
{
PrepareSocket(sockfd, addr, port);
int ret = connect(sockfd, (struct sockaddr *)&serverAddr, sizeof(struct sockaddr));
if(ret == -1)
{
printf("Connect Error!\n");
exit(1);
}
return sockfd;
}
int ServiceStart(int sockfd, int sockfd_c)
{
sockfd_c = accept(sockfd, (struct sockaddr *)&clientAddr, &addrLen);
if(sockfd_c == -1)
{
printf("Accept Error!\n");
return sockfd_c;
}
else
return sockfd_c;
}
int SendMsg(int sockfd, char *buf)
{
int ret = send(sockfd, buf, strlen(buf), 0);
//printf("ss:%d\n", ret);
if(ret == -1)
{
return -1;
}
//printf("%s\n", buf);
return 0;
}
int RecvMsg(int sockfd, char *buf)
{
int ret = recv(sockfd, buf, MAX_BUFFER_SIZE, 0);
*(buf + ret) = '\0';
//printf("rs:%d\n", ret);
if(ret == -1)
{
return -1;
}
//printf("%s\n", buf);
return 0;
}