Postman : socket hang up
For me it was because my application was switched to https and my postman requests still had http in them. Changing postman to https fixed it.
sockets
‘ab’ program freezes after lots of requests, why?
It sounds like you are running out of ephemeral ports. To check, use the netstat command and look for several thousand ports in the TIME_WAIT state. On Mac OS X the default ephemeral port range is 49152 to 65535, for a total of 16384 ports. You can check this with the sysctl command: $ sysctl … Read more
Will html5 websockets be crippled by firewalls?
I’m not an expert (so please check to confirm) but I believe there will be an UPGRADE mechanism where a regular HTTP connection can be made, then upgraded to a WebSocket, so no existing firewall rules interfere unless they are doing aggressive application level packet inspection. Connections are still initiated by the browser.
Where to place Unix Domain (AF_UNIX) sockets’ end points (files)?
The FHS says: /run (It used to be /var/run.)
What’s the purpose of using sendto()/recvfrom() instead of connect()/send()/recv() with UDP sockets?
accept() is for TCP. It has nothing to do with UDP. connect() in UDP doesn’t do anything to the other end, it just conditions the local API to know who you are sending to and receiving from. If you don’t already know that, or don’t care, or want to send to multiple destinations with the … Read more
How to know whether any process is bound to a Unix domain socket?
I know I am very late to the party and that this was answered a long time ago but I just encountered this searching for something else and I have an alternate proposal. When you encounter the EADDRINUSE return from bind() you can enter an error checking routine that connects to the socket. If the … Read more
what does fd:// mean exactly in dockerd -H fd://
When you start the Docker daemon, -H fd:// will tell Docker that the service is being started by Systemd and will use socket activation. systemd will then create the target socket and pass it to the Docker daemon to use. This is described in introduction to Systemd and in introduction to socket activation. The blogs … Read more
Message queues vs sockets
The two are incomparable, as they represent different layers. It’s like comparing a relational database to a file on a disk or comparing a house to a brick (i.e. certainly you need files to build databases and bricks to build houses, and sometimes all you need is a file or a brick, but that does … Read more
How is SSH_AUTH_SOCK setup and used by ssh-agent?
From here: $SSH_AUTH_SOCK contains the path of the unix file socket that the agent uses for communication with other processes. This is essential for ssh-add.
Python Socket Multiple Clients
Based on your question: My question is, using the code below, how would you be able to have multiple clients connected? I’ve tried lists, but I just can’t figure out the format for that. How can this be accomplished where multiple clients are connected at once and I am able to send a message to … Read more