I just started experimenting connections by creating local server. I am new to this stuff.
I created a local server on my laptop via cmd:
python -m http.server
And then from my Android phone I can able to connect to my laptop via Chrome browser giving relevant IP + port and view the files. My question is from my laptop how can I disconnect my Android phone connection without stopping my server.
HTTP is stateless but browser can keep connection alive on the same TCP connection. To prevent that you should set keep_alive as false in the header of your HTTP response.
They explain about HTTP and keep-alive here : Python-Requests close http connection
You must modifiy the http header response : https://docs.python.org/3.4/library/http.server.html?highlight=exp
Related
I'm very new to web development in general. I have a database on localhost that will receive requests from my Heroku web app. Can I use SimpleHTTPServer for the case? or it has to be other modules like ngrok which I don't want to use because it renames its HTTP every time it restarts or is there some way to navigate the problem?
In order for your local database to receive requests from the internet, it will need to be reachable by a public address.
One way to have a stable public address is to use a paid ngrok plan which will allow you to reserve a TCP address.
With a reserved TCP address, you can start a ngrok tunnel that will forward traffic to your local database with something like ngrok tcp --remote-addr=<your reserved TCP address> <database port>.
We are using Elasticemail for our SMTP server and running in issues where our server would fail to connect to the SMTP server for various reasons. Currently, we only find out about the issue when a user complains.
We want to monitor the connection to the server on a regular interval and notify Admin if there is a connection failure.
Is there any way to test the connection to the server without sending an actual email using Python3?
I am using paramiko to create a SFTP server. I have succeeded in uploading and downloading files to and from server on client request.But, I need to send a file from server to client whenever I need without client request. So, instead of breaking my head on making server send a file to client I want to make both machines act as both server and client in different ports so that when I need to send a file from machine A to B I can just Upload it to the SFTP server running on that port. Is this hypothesis possible?
You already know that you cannot send a file from an server to a client:
Can I send a file from SFTP Server to the Client without any request from it?
(The question on Server Fault has been deleted)
To answer your port question:
You do not care about client's port. It is automatically assigned to any available port, without you ever needing to know its value. In general, that's true for any TCP/IP connection, not only SFTP.
So you can just run SFTP server on both machines on the standard port 22. And use your client code on the other machine to connect to it.
I am trying to figure out why
python -m http.server 8000
works, while
python rpc_server.py 8000
refuses a connection from remote hosts. My rpc_server.py code is taken verbatim from: https://docs.python.org/3/library/xmlrpc.server.html
When I make a GET request to the http.server, everything works fine, both locally and remotely (router is correctly forwarding requests). Similarly, when I ping the rpc_server from the same machine (localhost), I get a response. However, when I ping the rpc_server from another machine (remote host), I get 'connection refused'. Using tcpdump, I can see that when I submit a SYN request the response is always RST. Why is the SimpleXMLRPCServer sending a reset signal to all remote host requests but not local host requests? (I have tried sending the remote host request using both POSTMAN in Chrome and rpc_client.py [taken from the same tutorial above]).
A Python web server started with
python -m SimpleHTTPServer
will print on the console requests it has accepted. Can I get it to print requests that returned a connection refused to the client?
I am trying to debug why it refuses some requests from an Android client.
No. If the client gets a Connection refused, this means that the connection request did not reach the server application. Therefore, the server application cannot possibly register these errors.
Check firewalls, routing, connectivity, and correctness of server address and port.