testsocket.c

Linux环境下常用功能的实现

#include "../cutil.h"

int main(int argc, char **argv)
{
	int nPort = 5433;
	char szBuffer[1024];
	int nListenFd;
	int nSocketFd;

	if(fork() > 0)
	{
		if((nListenFd = cutil_socket_new(NULL, nPort, 1)) < 0)
		{
			fprintf(stderr, "create listen socket error\n");
			return -1;
		}
		fprintf(stderr, "Parent %d\n", getpid());
		nSocketFd = accept(nListenFd, NULL, NULL);
		if(nSocketFd < 0)
		{
			fprintf(stderr, "accept client connect error %s\n", strerror(errno));
			return -1;
		}
		sprintf(szBuffer, "Hello %d", getpid());
		cutil_socket_put_line(nSocketFd, szBuffer, 0);
		return 0;
	}
	else
	{
		fprintf(stderr, "Client %d\n", getpid());
		sleep(5);
		if((nSocketFd = cutil_socket_new("127.0.0.1", nPort, 0)) < 0)
		{
			fprintf(stderr, "connect to server error\n");
			return -1;
		}
		memset(szBuffer, 0 , sizeof(szBuffer));
		cutil_socket_get_line(nSocketFd, szBuffer, sizeof(szBuffer));
		fprintf(stderr, "Client Get %s\n", szBuffer);
		return 0;
	}
}