和internet socket 比较: unix socket以文件名命令,而internet socket 是用ip和端口号; unix socket本机内进程之间通信,internet socket既可以本机通信也可以跨主机; 本机通信的话,用unix socket 效率更高,不用走TCP/IP协议栈,而且总是可靠传输; 底层的 API 非常相似; 启动一个虚拟机,并查看由qemu-kvm进程启动...
socket pair = client socket + server socket。 所以,当使用一个监听器监听时,一旦accept到一个connect后,可以,将这个socket交给一个线程或进程执行任务,在线程中执行这个任务的同时,主线程仍然可以accept其他client socket的链接。因为,每个tcp connection的socket pair中的client socket是不一样的,所以tcp是可以区分...
Using scripts (does not work) When I replace the listing process with a PHP (or Python) script, the connection is refused because the socket is not opened. $ python test.py Connecting... socket.error: [Errno 111] Connection refused 1. 2. 3. or $ php test.php Warning: fsockopen():...
Using scripts (does not work) When I replace the listing process with a PHP (or Python) script, the connection is refused because the socket is not opened. $ python test.py Connecting... socket.error: [Errno111] Connection refused or $ php test.php Warning: fsockopen(): unable toconnec...
socket pair = client socket + server socket。 所以,当使用一个监听器监听时,一旦accept到一个connect后,可以,将这个socket交给一个线程或进程执行任务,在线程中执行这个任务的同时,主线程仍然可以accept其他client socket的链接。因为,每个tcp connection的socket pair中的client socket是不一样的,所以tcp是可以区分...
(connect(socket, sockaddr, socklen)) { Ok(_) => {} Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {} + Err(ref e) if e.kind() == io::ErrorKind::ConnectionRefused => {} // Close the socket if we hit an error, ignoring the error // from closing since we ...
Why oh why does executing from php a script under sudo as apache cause supervisorctl not to be able to open the UNIX domain socket that is clearly sitting in /tmp and listening? EDIT: EL6 seems to work with zero code changes. But EL7 fails. The only difference I can think of is pyt...
10~11 socket函数创建一个网际(AF_INET)字节流(SOCK_STREAM)套接字,它是TCP套接字的花哨名字。该函数返回一个小整数描述符,以后的所有函数调用(如随后的connect和read)就用该描述符来标识这个套接字。 7 if语句包含3个操作:调用socket函数,把返回值赋给变量sockfd,再测试所赋的这个值是否小于0。虽然我们可以...
Close the connection: You can close the connection either by calling close(), or by calling shutdown(). With all that said, here is some source for an echoing server, echos.c. All it does is wait for a connection on a Unix socket (named, in this case, "echo_socket"). ...
#define ENOTSOCK 108/* Socket operation on non-socket */ #define ENOPROTOOPT 109/* Protocol not available */ #ifdef __LINUX_ERRNO_EXTENSIONS__ #define ESHUTDOWN 110/* Can't send after socket shutdown */ #endif #define ECONNREFUSED 111/* Connection refused */ ...