我正在尝试使用UNIX域套接字在C程序和

Python脚本之间进行通信. Python脚本通过UNIX域套接字将数据发送到C程序.

这是我的C程序的相关代码：

#include

#include

#include

#include

#include

#include

#define UNIX_PATH_MAX 100

int main(void)

{

struct sockaddr_un address;

int socket_fd,connection_fd;

socklen_t address_length;

pid_t child;

socket_fd = socket(AF_UNIX,SOCK_STREAM,0);

if (socket_fd < 0){

printf("socket() failed\n");

return 1;

}

unlink("/tmp/demo_socket");

memset(&address,sizeof(struct sockaddr_un));

address.sun_family = AF_UNIX;

snprintf(address.sun_path,UNIX_PATH_MAX,"/tmp/demo_socket");

if (bind(socket_fd,(struct sockaddr *) &address,sizeof(struct sockaddr_un)) != 0) {

printf("bind() failed\n");

return 1;

}

if(listen(socket_fd,5) != 0) {

printf("listen() failed\n");

return 1;

}

//----------------WHILE LOOP----------------------->

while((connection_fd = accept(socket_fd,&address_length)) > -1)

{

.

.

.(doesn't get any further than this)

这是我用来向套接字发送消息的python脚本：

import socket

s = socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)

s.connect("/tmp/demo_socket")

print "Sending..."

s.send("Hello world")

x = s.recv(1024)

print x

s.close()

python脚本失败,错误“Broken Pipe”. C程序永远不会进入while循环,因为accept()函数失败并返回’-1′.

为什么accept()失败了？我能做些什么才能让它成功？