I myself propose one possible workaround solution. Convert a string into URI (this would validate it automatically) and then query the URI’s host and port components. Sadly, an URI with a host component MUST have a scheme. This is why this solution is “not perfect”. String string = … // some string which has to … Read more
I wouldn’t recommend you to try write just for testing the socket. And don’t relay on .NET’s Connected property either. If you want to know if the remote end point is still active, you can use TcpConnectionInformation: TcpClient client = new TcpClient(host, port); IPGlobalProperties ipProperties = IPGlobalProperties.GetIPGlobalProperties(); TcpConnectionInformation[] tcpConnections = ipProperties.GetActiveTcpConnections().Where(x => x.LocalEndPoint.Equals(client.Client.LocalEndPoint) && x.RemoteEndPoint.Equals(client.Client.RemoteEndPoint)).ToArray(); … Read more
On Windows, you can try these steps: 1. check which process uses the port. # 4444 is your port number netstat -ano|findstr 4444 you will get something like this: # 19088 is the PID of the process TCP 0.0.0.0:4444 *:* 19088 2. kill this process With: tskill 19088 Or: taskkill /F /PID 19088 Good luck.
To check port use: def is_port_in_use(port: int) -> bool: import socket with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: return s.connect_ex((‘localhost’, port)) == 0 source: https://codereview.stackexchange.com/questions/116450/find-available-ports-on-localhost Note: connect_ex cann still raise an exception (in case of bad host name i.e see docs on [1]. [1] https://docs.python.org/3/library/socket.html
The default namespace that Socket.IO clients connect to by default is: /. It is identified by io.sockets or simply io (docs). This example copied from the documentation: // the following two will emit to all the sockets connected to `/` io.sockets.emit(‘hi’, ‘everyone’); io.emit(‘hi’, ‘everyone’); // short form I assume it is the same for ‘on’, … Read more
It is thread-safe, but there isn’t much documentation that explicitly states that. See here BTW, you can also have multiple threads waiting on a single epoll_fd, but in that case it can get a bit tricky. (I.e. you might want to use edge-triggered EPOLLET or oneshot mode EPOLLONESHOT. See here.)
While maybe gifsockets would work (I haven’t tried that before…), there is no network traffic while I am looking at the image other than the initial image load. I am also seeing it it jump from 41 to 42 again. A Reload took it down to 39. It appears to be just a script that … Read more
It could be port exhaustion. When application(s) makes too many outgoing connections in short time frame or does not dispose outgoing connections properly – you run out of ports. Here is the link to rather lengthy explanation and a way to diagnose the issue
I think you should probably have a call to socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec) in there before the call to socket.close(). The boost::asio documentation for basic_stream_socket::close states: For portable behaviour with respect to graceful closure of a connected socket, call shutdown() before closing the socket. This should ensure that any pending operations on the socket are properly cancelled … Read more