I've created a project using socket programming. If I connect a single client to my server, the data I send from my client is successfully received by the server. But whenever I connect more than one client, only one client's data is received by the server. The other clients fail to connect. How can I make the server accept all new incoming connections, and how can I make the server receive two files from the same client?
If your code uses BeginAccept, EndAccept methods to accept new connection asynchonously, don't forget to call again BeginAccept after EndAccept call in your AcceptCallback.
Regards
Related
I have multiple devices sending messages to a mosquito broker. I would like to manage a kind of device revocation so that when a device is revoked, I want the mosquito broker to automatically close the connection for this specific device.
Is there any command or way to ask the broker to explicitly close a connection to a specific client?
Thanks in advance,
hak
I do not think you can kick an already connected client.
But what you can do if using the Authentication Plugin (either a 3rd party or the included dynamic security plugin) to change the ACL that the user can publish/subscribe to which should effectively stop the client sending or receiving any messages and when it next tries to connect it will not be allowed.
I have a web api that posts json to different external endpoints on certain conditions. We have a new client that wants us to open a web socket connection with them during an event, send them the data (json) when we get it via this socket, and close the socket after the event. I'm having a hard time figuring out the rails way to do this.
How do I open a web socket connection and keep it open? (basically where would the client sit/ what would the definition look like).
How do I send messages over the socket from a controller? (eg. after processing a post request send new data to this websocket)
How do I close the connection?
You can try using this gem called Faye. Here's an example for connecting and sending data: (note: I didn't test it)
# Open the connection
ws = Faye::WebSocket::Client.new('ws://www.example.com/')
# Send data to connection
ws.send(YOURJSONDATA)
# Close connection (RFC 6455)
ws.close
Notes for faye:
Using the WebSocket client
Adding headers and other options to connection
WebSocket API
RFC 6455
Hope it helps!
I'm trying to create a HTTP(s) proxy server that will act like this:
Browser configured to use proxy on 127.0.0.1:1080. On this port, I need to have a server (TIdTCPServer?) that will pass data coming to a client, that is connected on this same server (maybe into another port to make things easier). The client need to be connected, and not serving connection because of possible NAT restrictions.
The idea is that the client will execute the requests and send back to the server, which should send to the browser.
Browser > connect to local server > send to client connected which make the request
I thought about IdHTTPProxy, but no idea on how to pass request to a client, and client execute, gets back the data to the server / browser.
I read about TIdMappedPortTCP, but looks like this should connect into another host/port, and in my case the client can't receive connections.
MQTT Broker can disconnect the existing client if the following condition is came up.
http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc398718090
If the ClientId represents a Client already connected to the Server then the Server MUST disconnect the existing Client
[MQTT-3.1.4-2].
At this time, can broker send any specific message excluding "DISCONNECT" to client before server disconnect the existing client ?
Most brokers are going to follow the spec, if you want one to do something different then you will have to either write your own or modify one of the open source versions.
I've created a program that send's a data to a webserver. I used the NSURLConnection to send the data to the web server. I've created a php file on my server to handle all the POST request from the iPhone. My question was are there any other ways to send the data to a web Server besides using WiFi connection. I just only need to send small data.
are there any other ways to send the
data to a web Server besides using
wifi connection
Yes, EDGE and 3G