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[5.2] Close the backend request when the client leaves before the WebSocket upgrade completes - #162
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… upgrade completes (#156) Motivation: The client and backend sockets of a proxied WebSocket are only joined once the backend answers 101. A client that closes its connection before that leaves the request to the backend open: for as long as the backend does not answer, and for good when the backend answers 101 after the client has gone, since the client connection can no longer be turned into a socket ("Handle this case"). A client that is already gone when the origin is resolved still gets its upgrade sent to the backend. Changes: Reset the backend request when the client response reports the connection closed before anything was written, the same way proxied HTTP requests are reset. Fail without sending the upgrade when the client connection is already closed once the origin is resolved. Close the backend socket instead of printing a stack trace when the client connection cannot be upgraded after a 101. (cherry picked from commit fef6e0a) Signed-off-by: Thomas Segismont <tsegismont@gmail.com>
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Backport of #156 to
5.2Cherry-picked commit: fef6e0a