context.cc

#include "msg.pb.h"
#include "doevent.h"

#include <iostream>
#include <string>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>

#include <arpa/inet.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

#define ERR_EXIT(info)\
	do\
	{\
		perror(info);\
		exit(EXIT_FAILURE);\
	} while(0)

//deal with connect in client
extern void do_client(int listenfd);

int main(void)
{
	int count = 0;
	for (;;)
	{
		//socket
		int listenfd = socket(AF_INET,SOCK_STREAM,0);
		if(listenfd == -1)
		{
			sleep(5); // make server enough time to deal with close
			ERR_EXIT("socket");
		}
		//the server's address and port
		struct sockaddr_in servaddr;
		memset(&servaddr,0,sizeof(servaddr));
		servaddr.sin_family = AF_INET;
		servaddr.sin_port = htons(5588);
		servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
		
		//connect
		if (connect(listenfd,(struct sockaddr*)&servaddr,sizeof(servaddr)) == -1)
		{
			ERR_EXIT("connect");
		}

		struct sockaddr_in localaddr;
		socklen_t addrlen = sizeof(localaddr);
		if (getsockname(listenfd, (struct sockaddr*)&localaddr, &addrlen) < 0)
		{
			ERR_EXIT("getsockname");
		}
		printf("ip=%s port=%d\n",inet_ntoa(localaddr.sin_addr),ntohs(localaddr.sin_port));
		printf("count=%d\n", ++count);

	}

	//do_client(listenfd);
	return 0;
}