关于socket程序的疑问(页 1) - C/C++ (STL/boost) - Linux伊甸园论坛

海天一色 发表于 2007-1-8 22:26

关于socket程序的疑问

下面是一个很简单的服务器程序，可运行时为什么显示bind函数的返回结果是很大的数（大于100000），应该是-1或0 才对呀。
#include <sys/types.h>d W#Z{0Z
#include <sys/socket.h>!@ ~9x[yI e9ay
#include <stdio.h>
#include <sys/un.h>
#include <unistd.h>@o9I+xVC)c
int main():u,yT0| z#JY
{O7oqM.{8[L'tS

int server_sockfd,client_sockfd;
int server_len,client_len,status;1C,c)wG&~7M{
struct sockaddr_un server_address; Iv$s1Y4nj-v)M.g
struct sockaddr_un client_address;
1z}-m*]0lD!b
3H9]*LL*?mqt5d"i
unlink("server_socket");
server_sockfd=socket(AF_UNIX,SOCK_STREAM,0);

server_address.sun_family=AF_UNIX;a$|BC,QR;Q r
strcpy(server_address.sun_path,"server_socket");
server_len=sizeof(server_address);K~:E+G m Q
bind(server_sockfd,(struct sockaddr *)&server_address,server_len);T(M0g lv3nm
if (status == -1)
perror("bind is ");4K7{BuBf W\
printf("bind status is %d\n",status);K]WUh] }
listen(server_sockfd,5);

//       while(1) {
         char ch;1S2N | p(a{(Q
         printf("server waiting\n");!dc\ d P|\-n
         client_len=sizeof(client_address);!Zf'Q;mR f,\@5Ks G
         sleep(2);xm%BtJ/UU
         client_sockfd=accept(server_sockfd,(struct sockaddr *)&client_address,&client_len);
         read(client_sockfd,&ch,1);;]Bd{,A `y
         ch++;
         write(client_sockfd,&ch,1);.o}.{bk*vJ
         close(client_sockfd); HFK'mpxR
//             }
}

flag 发表于 2007-1-9 12:33

I服了U，status不赋值就打印出来，你想用意念术来赋值吗？
不好好检查代码就来这里提问，以为别人都是代码检查工具不成！

海天一色 发表于 2007-1-9 17:01

惭愧啊，惭愧，是我太粗心了，没有认真检查，这就去改，多谢版主！
以前有个贴代码的帖子，告诉怎么能保持代码的美观，现在怎么没有了呢？

海天一色 发表于 2007-1-9 18:11

新修改的:.er]0o7@j
[QUOTE]
#include <sys/types.h>7Cg7S$J]n
#include <sys/socket.h>
#include <stdio.h>
#include <sys/un.h>t+W4L^.l/jb['cV8^
#include <unistd.h>
int main()
{ O3k ]MPw)Q

int server_sockfd,client_sockfd;
int server_len,client_len,status;
struct sockaddr_un server_address;ozh5Q6RN'Kp
struct sockaddr_un client_address;[QA7Wb@h J_yP

                                                                                                                                             .VTb|"L-JG'v+@
// unlink("server_socket");
server_sockfd=socket(AF_UNIX,SOCK_STREAM,0);}rG4pV9@]GO
printf("socket return is %d\n",server_sockfd);
perror("socket is");
server_address.sun_family=AF_UNIX;n|x*D-q;g$M
strcpy(server_address.sun_path,"server_socket");
server_len=sizeof(server_address);[4J5Lw'r3m}+kzr v3D
status = bind(server_sockfd,(struct sockaddr *)&server_address,server_len);-q{@.U2o)Cf
if (status == -1)*aq0s~8PF
perror("bind is ");*Lt%Hz({
printf("bind status is %d\n",status);.Q4T/a0O-W3|;m*fBx
listen(server_sockfd,5);

      while(1) {
         char ch;
         printf("server waiting\n");
         client_len=sizeof(client_address);
         sleep(2);
         client_sockfd=accept(server_sockfd,(struct sockaddr *)&client_address,&client_len);
         read(client_sockfd,&ch,1);
         ch++;
         write(client_sockfd,&ch,1);)_l7i!b)DjH3Uo ?
         close(client_sockfd);1vGNm$PO
            }v T.bv;Z*zO&A nV
} fZ y]0B?

运行返回是:~N K&f,[7Q
root@localhost cx]# ./fuwu??6KN(c"Q(nA V
socket return is 3!d-a/Io,DhJ.Q
socket is: Success
bind is : Operation not permitted?U,q(Zk
bind status is -1
server waiting
server waiting1z*_'o4yuJg#Y3P

                                                                                                                                             #QG[MB9m
[/QUOTE]'D4yU2S1Um
bind is : Operation not permitted 是什么问题?我是以vroot  身份运行的啊.

海天一色 发表于 2007-1-9 18:12

借用引用的格式现发上去吧

zhuyf0522 发表于 2007-1-26 11:28

server_sockfd=socket(AF_UNIX,SOCK_STREAM,0);
[ biw!j
把AF_UNIX换一下试试

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关于socket程序的疑问