3G internet. posing not working ?

[Dante123]

when i go with my mobile to these TTD forums, i get some strange errors.
the advertisements have white screens with "http status 400" writtin in it.

when i try to make a post or reply i get: "HTTP status 417"

any ideas on this one ?

on other forums it seems to work well. and these forums are PHPBB (3.0.7-PL1) too.

[Illegal_Alien]

The Web server (running the Web site) thinks that the HTTP data stream sent by the client contains a 'Expect' request which can not be satisfied. The Expect request is fairly generic i.e. loosely defined in the HTTP protocol. It can specify more than one expectation, each of which may be interpreted differently by different Web servers.

417 errors in the HTTP cycle

Any client goes through the following cycle:

•Obtain an IP address from the IP name of the site (the site URL without the leading 'http://'). This lookup (conversion of IP name to IP address) is provided by domain name servers (DNSs).
•Open an IP socket connection to that IP address.
•Write an HTTP data stream through that socket.
•Receive an HTTP data stream back from the Web server in response. This data stream contains status codes whose values are determined by the HTTP protocol. Parse this data stream for status codes and other useful information.
This error occurs in the final step above when the client receives an HTTP status code that it recognises as '417'.
Fixing 417 errors - general

This error seldom occurs in most Web traffic, particularly when the client system is a Web browser. This type of Web traffic seldom uses an 'Expect' request.

If your client system is not a Web browser, the problem can only be resolved by examining what the client is trying to do then discussing with your ISP why the Web server fails the 'Expect' request sent by the client system.

[orudge]

I know of no obvious reason why it shouldn't work - it sounds like your provider uses some kind of a proxy that's doing something odd. I'd suggest you try to speak to them about it.