Inprove channel join request processing #3261
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The existing code contains separate TLS and non-TLS code paths for hadling channel join PDUs. This was introduced in 8fdc1ba and was based on a misunderstanding of where in the connection sequence the TLS client hello is processed (if a TLS connection is negotiated). The assumption was the TLS client hello is received after the channel join PDUs. However, it is actually received immediately after the X.224 Connection Confirm PDU some time before channel join requests are processed. Consequently, there is no reason not to adopt a single code path for handling channel joins.
We always now indicate we support skipping channel joins. If the client indicates this too, expect no channel join requests from the client. If we do get some, process them anyway.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #3256
Fixes #3258
Announces we can skip channel joins for improved startup times with clients which also support this. See [MS-RDPBCGR] 3.2.5.3.8.
Part of this work is correcting a bad assumption made by me in 8fdc1ba. This assumption is documented in the comment on the first commit. Fixing the assumption allows a couple of code paths to be combined, simplifying the overall code.
This can safely be back-ported to v0.10.x.