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Archived:Receiving and sending threads on a single UDP connection block each other (Known Issue)

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Archived.pngArchived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

The article is believed to be still valid for the original topic scope.

Article Metadata
Tested with
Devices(s): Nokia 6270, Nokia 6280 (only sw version 3.xx), Nokia 7370, Nokia 6111
Created: User:Technical writer 1 (21 Apr 2006)
Last edited: hamishwillee (23 Oct 2013)


When using two threads on a single UDP connection, receiving and sending block each other.


When using two threads on a single UDP connection, receiving and sending block each other. If an application sets up the receiving thread before sending the first packet, then it will become deadlocked. Also, while it is waiting for a response from the server, it can't retry sending.


Use an alternative implementation method. If possible, always set up a sending thread first.

This is fixed in newer Series 40 3rd Edition devices.

This page was last modified on 23 October 2013, at 04:12.
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