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Fix per-host connection permit leak on the connect path - #2288
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Motivation: `NettyConnectListener.onSuccess()` removes the per-host permit from the future before the TLS handshake completes, preventing `abort()` from releasing it. Until the handshake succeeds, failures can still occur, leaving the permit without an owner. Modification: Transfer permit ownership to `channel.closeFuture()` as soon as it leaves the future, ensuring it is released exactly once. Also publish the channel before the handshake starts so timeout-triggered aborts can immediately close the socket. Result: Permits are preserved across all connect-path exits, and timed-out requests now close their sockets immediately. Fixes#2189.
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… io_uring fallback Fixes for PR #2216 CI failures on io_uring: - InputStreamMultipartPart: prevent infinite loop with slowTarget backpressure - StackTraceInspector: detect native transport connection resets via errno matching - NettyChannelConnector: annotate connect failures with host:port for io_uring - ChannelManager: fallback from io_uring to epoll on ring allocation failure (io_uring rings charge against RLIMIT_MEMLOCK, not always available) Rebased on #2288 (Fix per-host connection permit leak) for proper semaphore handling.
hyperxpro added a commit
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Aug 2, 2026
… io_uring fallback Fixes for PR #2216 CI failures on io_uring: - InputStreamMultipartPart: prevent infinite loop with slowTarget backpressure - StackTraceInspector: detect native transport connection resets via errno matching - NettyChannelConnector: annotate connect failures with host:port for io_uring - ChannelManager: fallback from io_uring to epoll on ring allocation failure (io_uring rings charge against RLIMIT_MEMLOCK, not always available) Rebased on #2288 (Fix per-host connection permit leak) for proper semaphore handling.
hyperxpro added a commit
that referenced
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Aug 2, 2026
… io_uring fallback Fixes for PR #2216 CI failures on io_uring: - InputStreamMultipartPart: prevent infinite loop with slowTarget backpressure - StackTraceInspector: detect native transport connection resets via errno matching - NettyChannelConnector: annotate connect failures with host:port for io_uring - ChannelManager: fallback from io_uring to epoll on ring allocation failure (io_uring rings charge against RLIMIT_MEMLOCK, not always available) Rebased on #2288 (Fix per-host connection permit leak) for proper semaphore handling.
hyperxpro added a commit
that referenced
this pull request
Aug 2, 2026
… io_uring fallback Fixes for PR #2216 CI failures on io_uring: - InputStreamMultipartPart: prevent infinite loop with slowTarget backpressure - StackTraceInspector: detect native transport connection resets via errno matching - NettyChannelConnector: annotate connect failures with host:port for io_uring - ChannelManager: fallback from io_uring to epoll on ring allocation failure (io_uring rings charge against RLIMIT_MEMLOCK, not always available) Rebased on #2288 (Fix per-host connection permit leak) for proper semaphore handling.
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Motivation:
NettyConnectListener.onSuccess()removes the per-host permit from the future before the TLS handshake completes, preventingabort()from releasing it. Until the handshake succeeds, failures can still occur, leaving the permit without an owner.Modification:
Transfer permit ownership to
channel.closeFuture()as soon as it leaves the future, ensuring it is released exactly once. Also publish the channel before the handshake starts so timeout-triggered aborts can immediately close the socket.Result:
Permits are preserved across all connect-path exits, and timed-out requests now close their sockets immediately.
Fixes#2189.