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Fix multiple concurrent websocket connects failing #2265

merged 10 commits into from Feb 18, 2019


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commented Feb 17, 2019

Fixes #2169. This is a full solution that also fixes a socket descriptor leak and supercedes the workaround in #2172.

s-ludwig added some commits Feb 17, 2019

Fix closing switched-protocol connections properly in the HTTP server.
- The connection is now only closed by the main request loop to avoid stale connection references
- switchProtocol sets a flag to ensure that the connection is not getting reused for further requests
Use requestHTTP for the non-scoped connectWebSocket. Fixes #2169.
This change required a rework of how the connection close and resource management is done to avoid InvalidMemoryOperationError. As a side-effect, this also fixes a leak of TCP connections for connectWebSocket.

The rework in particular makes sure that HTTPClientResponse.disconnect and HTTPServerResponse.finalize is called, and only called from the task that created the web socket. This makes sure that the HTTP client instance is properly returned to the connection pool after the web socket is closed.

Closes #2172.

@l-kramer l-kramer added the auto-merge label Feb 17, 2019

@dlang-bot dlang-bot removed the auto-merge label Feb 18, 2019

@s-ludwig s-ludwig added the auto-merge label Feb 18, 2019

sludwig added some commits Feb 18, 2019

Remove redundant connection close.
HTTPClient.disconnect already destroys the connection, which means that the `.connected` call in `WebSocket.close` accesses a destroyed memory region.

@dlang-bot dlang-bot removed the auto-merge label Feb 18, 2019

@l-kramer l-kramer added the auto-merge label Feb 18, 2019

@dlang-bot dlang-bot merged commit 4612d8b into master Feb 18, 2019

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codecov/patch 87.804% of diff hit (target 35.005%)
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@s-ludwig s-ludwig deleted the issue_2169_multiple_websocket_fail branch Feb 18, 2019

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