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In theory these tests will find more non-blocking issues.
The test failures revealed that only echoserver (-N flag) and wolfsftp (-N flag) properly support non-blocking I/O handling. wolfscp and wolfsshd do not have the retry logic to handle WS_WANT_READ/WS_WANT_WRITE returns from TEST_BLOCK. Changes: - scp.test: Revert to skip (exit 77) when TEST_BLOCK is detected since wolfscp doesn't support non-blocking mode - network-contention-test.yml: Remove SCP tests, fix SFTP tests to use expect instead of echo pipe (which was causing "fgets error") - Remove paramiko-contention-test.yml: wolfsshd doesn't support TEST_BLOCK (hangs during SSH handshake) The remaining SFTP contention tests properly exercise the non-blocking code paths using echoserver -N and wolfsftp -N. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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In theory these tests will find more non-blocking issues.