[Bug 43286] New: Qt 5.7.0 based: Cannot read UDP packets: "errno 90, ( Message too long)"
wine-bugs at winehq.org
wine-bugs at winehq.org
Wed Jul 5 21:56:52 CDT 2017
https://bugs.winehq.org/show_bug.cgi?id=43286
Bug ID: 43286
Summary: Qt 5.7.0 based: Cannot read UDP packets: "errno 90,
(Message too long)"
Product: Wine
Version: 2.11
Hardware: x86
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: winsock
Assignee: wine-bugs at winehq.org
Reporter: winehq at supradigital.org
Distribution: ---
Created attachment 58625
--> https://bugs.winehq.org/attachment.cgi?id=58625
Binary, source code, debug log
In any program using Qt 5.7.0, if you try to read a udp datagram packet, the
call would always return size 0 and leave you with an empty peer-address/port
as well.
I discovered the problem in the launcher for my game which uses UDP to ping
various servers.
I wrote a minimal UDP server to which you can connect with netcat (or anything)
and it easily reproduces the problem.
Attached you'll find a small archive containing:
- minimal udp test server
- source code for that server
- debug log with +winsock showing the error
- the client netcat command to cause that error
Note: I have not checked a simple raw UDP server using the winsock API
directly.
The problem exists at least since wine v1.6.2
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