#include <string.h>
#include "../include/apue.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/errno.h>

int main(int argc, char **argv)
{
    int sockfd, n;
    char recvline[MAXLINE + 1];
    struct sockaddr_in servaddr;

    if(argc != 2)
        err_quit("Usage: ./a.out <IPAddress>");

	if((sockfd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
		err_quit("socket error!");

	bzero(&servaddr, sizeof(servaddr));   //there is warning :  bzero 不相容
	memset(&servaddr, 0, sizeof(servaddr));
	servaddr.sin_family = AF_INET;
	servaddr.sin_port = htons(8008);
	//servaddr.sin_addr.s_addr = inet_addr(argv[1]);  //inet_addr()   only support IPv4
	inet_pton(AF_INET, argv[1], &servaddr.sin_addr);     //inet_pton() also can support IPv6

	if( (connect(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr))) < 0)
		err_sys("connect error!");

	while((n = read(sockfd, recvline, MAXLINE)) > 0)
	{
		recvline[n] = 0;    //null terminate
		if(fputs(recvline, stdout) == EOF)
			err_sys("EOF");
	}
	
		
    exit(0);
}
 

同一.c檔案,在臺式機執行一切正常. 32位 XP

當複製到筆記本上編譯執行時竟然提示段錯誤.當時就好無奈. 果斷gcc -g 除錯,發現問題出在inet_pton().

好吧,找到了解決方法:

#include <apra/inet.h>即可.

原來筆記本是64位 WIN7,所以才會出現這種情況.