Interprocess communication in Python
What is a good way to communicate between two separate Python runtimes? Thing’s I’ve tried:
sockets
Python Socket Receive Large Amount of Data
When I try to receive larger amounts of data it gets cut off and I have to press enter to get the rest of the data. At first I was able to increase it a little bit but it still won’t receive all of it. As you can see I have increased the buffer on the conn.recv() but it still doesn’t get all of the data. It cuts it off at a certain point. I have to press enter on my raw_input in order to receive the rest of the data. Is there anyway I can get all of the data at once? Here’s the code.
socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its access permissions
I’m trying to create a custom TCP stack using Python 2.6.5 on Windows 7 to serve valid http page requests on port 80 locally. But, I’ve run into a snag with what seems like Windows 7 tightened up security. This code worked on Vista.
On localhost, how do I pick a free port number?
I’m trying to play with inter-process communication and since I could not figure out how to use named pipes under Windows I thought I’ll use network sockets. Everything happens locally. The server is able to launch slaves in a separate process and listens on some port. The slaves do their work and submit the result to the master. How do I figure out which port is available? I assume I cannot listen on port 80 or 21?
What does Python’s socket.recv() return for non-blocking sockets if no data is received until a timeout occurs?
Basically, I’ve read in several places that socket.recv() will return whatever it can read, or an empty string signalling that the other side has shut down (the official docs don’t even mention what it returns when the connection is shut down… great!). This is all fine and dandy for blocking sockets, since we know that recv() only returns when there actually is something to receive, so when it returns an empty string, it MUST mean the other side has closed the connection, right?
Basic Python client socket example
I’ve been trying to wrap my head around how sockets work, and I’ve been trying to pick apart some sample code I found at this page for a very simple client socket program. Since this is basic sample code, I assumed it had no errors, but when I try to compile it, I get the following error message.
How Do I Use Raw Socket in Python?
I am writing an application to test a network driver for handling corrupted data. And I thought of sending this data using raw socket, so it will not be corrected by the sending machine’s TCP-IP stack.
socket.shutdown vs socket.close
I recently saw a bit of code that looked like this (with sock being a socket object of course):
Python [Errno 98] Address already in use
In my Python socket program, I sometimes need to interrupt it with Ctrl-C. When I do this, it does close the connection using socket.close().
socket.error:[errno 99] cannot assign requested address and namespace in python
My server software says errno99: cannot assign requested address while using an ip address other than 127.0.0.1 for binding.