Oserror: [winerror 10049] the requested address is not valid in its context

Hello Coders! In today’s post we are going to tackle a common sockaddr issue that you may encounter while coding in Python – “oserror: [winerror 10049] the requested address is not valid in its context“.

Contents

1 What is oserror: [winerror 10049] ?
2 What causes Oserror: [winerror 10049] the requested address is not valid in its context?
- 2.1 Code Example 1
- 2.2 Solution 1
3 Now let’s see how we can correct this in Python 3:
- 3.1 Solution 2
- 3.2 Solution 3
4 FAQs
5 Conclusion

What is oserror: [winerror 10049] ?

In Python, when working with networking – be it sockets or web scrapers – you may encounter this error. This simply means that the Internet socket address (IP address and port number) that you are trying to connect to is not valid in the current context.

What causes Oserror: [winerror 10049] the requested address is not valid in its context?

This error usually occurs when you’re trying to bind a socket to an IP address that is not present on your local machine. A common mistake programmers make is using an external IP address instead of a local one. Another cause could be that you are mixing up server sockets with client sockets.

Code Example 1

from socket import *
soc = socket(AF_INET, SOCK_STREAM)
soc.connect(('168.62.48.183', 80)) # Trying to connect to an external IP
soc.send('GET /miners/ ...') # A GET request

This code would fail because we are trying to bind to an external IP that the machine is not aware of. If we change the IP address to 127.0.0.1 (the local host), it would work.

Solution 1

from socket import *
soc = socket(AF_INET, SOCK_STREAM)
soc.connect(('127.0.0.1', 80)) # Changed the IP to localhost

Another regular programming error is that the code may be missing a buffer-size argument in soc.recv(), like so: soc.recv(1024).

Now let’s see how we can correct this in Python 3:

from socket import *
soc = socket(AF_INET, SOCK_STREAM)
soc.connect(('168.62.48.183', 80))
soc.send(b'GET /miners/get ...') # Note that we send a binary GET string.

Here, we send a binary GET string instead of a standard one. We also need to open the output file in a binary form because the data received will be in binary form.

Alternatively, for web requests, you could simplify this by using urllib:

import urllib.request
f = urllib.request.urlopen("http://www.multiminerapp.com/miners/ ...")
print(f.read())

Solution 2

If you’re encountering this error while using sockets, the issue may be due to using an external IP instead of an internal one. Below is an example of how to correctly bind your server to an IP:

Instead of using

soc.bind(('IP', PORT))

Use

soc.bind(('', PORT))

This will bind the server to the local IP.

Solution 3

For those unaware of any proxy settings, please ensure that the only box checked off is ‘Automatically Detect Settings’, and that the proxy information within the host is removed.

FAQs

1. Can I bind to any IP address in Python socket programming?

No, you can bind only to IP addresses that are present on the local machine or to the loopback address (127.0.0.1).

2. Can I use external IP addresses in Python programming?

If you are working with web scraping or making web requests, you can use external IPs. However, if you’re dealing with low-level socket programming, you should be using internal IPs unless a specific setup (like port forwarding or NAT) is in place.

3. Are there any Python libraries to get around this error?

For internet requests, libraries like urllib or requests can be used which handle most of these internet socket complexities for you.

Conclusion

In this article, we have discussed the “oserror: [winerror 10049] the requested address is not valid in its context” error, its causes and possible solutions. Hope you can now solve this error more effectively! Happy coding!