python和c通信_C和Python之间的Socket通信

我只是尝试了一个非常简单的例子来开始使用sockets在C应用程序和Python之间进行通信。下面是非常简单的Python脚本：import socket

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

s.connect("/tmp/demo_socket")

print "Sending..."

s.send("Hello C from Python!")

data = s.recv(1024)

s.close()

print 'Received', repr(data)

这里是相应的C代码，没有标题：int main(void)

{

struct sockaddr_un address;

int socket_fd, connection_fd;

socklen_t address_length;

pid_t child;

char buffer[256];

int n;

socket_fd = socket(AF_UNIX, SOCK_STREAM, 0);

if (socket_fd < 0){

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

return 1;

}

unlink("/tmp/demo_socket");

memset(&address, 0, 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;

}

address_length = sizeof(address);

while((connection_fd = accept(socket_fd,

(struct sockaddr *) &address,

&address_length)) > -1)

{

printf("successfully received data\n");

bzero(buffer,256);

n = read(connection_fd,buffer,255);

if (n < 0) error("ERROR reading from socket");

printf("Here is the message: %s\n\n", buffer);

strcpy(buffer, "Hi back from the C world");

n = write(connection_fd, buffer, strlen(buffer));

if (n < 0)

printf("ERROR writing to socket\n");

break;

}

close(socket_fd);

close(socket_fd);

return(0);

}

并行运行时，输出如下：Successfully received data

Here is the message: Hello C from Python!

ERROR writing to socket

close failed in file object destructor:

Error in sys.excepthook:

Original exception was:

所以好消息是，接收来自Python世界的内容工作得很好，但是当我试图写回某些内容时会出错，而且似乎我最终会得到一个异常。有人知道我在这里做错了什么吗？

编辑：谢谢各位，我做了你们建议的修改，消息交换工作正常，只是C应用程序仍然在制造麻烦，我不知道为什么。。。close failed in file object destructor:

Error in sys.excepthook:

Original exception was: