# Error: RTSPRequestAdapter.getAuthenticationHandler: Unknown method: 0

**URL:** <https://community.wowza.com/t/error-rtsprequestadapter-getauthenticationhandler-unknown-method-0/45748>\
**Category:** Wowza Streaming Engine\
**Created:** [July 31, 2015, 5:39pm UTC](https://community.wowza.com/t/error-rtsprequestadapter-getauthenticationhandler-unknown-method-0/45748 "2015-07-31T17:39:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mat\_DePasquale](https://avatars.discourse-cdn.com/v4/letter/m/8c91f0/32.png) [@Mat\_DePasquale](https://community.wowza.com/u/Mat_DePasquale)\
**Post date:** [July 31, 2015, 5:39pm UTC](https://community.wowza.com/t/error-rtsprequestadapter-getauthenticationhandler-unknown-method-0/45748/1 "2015-07-31T17:39:27Z")

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Wowza newbie here … I’ve only seen a few references to this error on this forum with no real resolution.

I installed the trial version of Wowza that I have running on my machine. I have written an Android app that connects to this via RTSP socket.

I have tried to send RTSP ANNOUNCE messages to the server. If I turn off authentication for RTSP in the Wowza Streaming Engine Manager (Applications-\>live-\>Incoming Security-\>Open (No Authentication Required) and also edit the Application.xml file to specify **none** and send an ANNOUNCE message, the first time I get a success (200) response. Any messages I send after that (i.e. OPTIONS, SETUP, etc.) show up in the server logs as:

RTSPRequestAdapter.getAuthenticationHandler: Unknown method: 0

I have also tried turning on authentication by specifying ‘digest’ for the and turning authentication for RTSP back on, and I get the same response when I send an authenticated ANNOUNCE message using realm, nonce from the response to the 401 Unauthorized message.

I haven’t changed any other settings from what I remember. Does anyone know how to fix this?

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**Author:** ![Jason\_Hilton](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/jason_hilton/32/437_2.png) [@Jason\_Hilton](https://community.wowza.com/u/Jason_Hilton)\
**Post date:** [August 3, 2015, 3:11pm UTC](https://community.wowza.com/t/error-rtsprequestadapter-getauthenticationhandler-unknown-method-0/45748/2 "2015-08-03T15:11:49Z")

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Hi,

This will now be handled in the support ticket created (136382).

Regards,

Jason