Fix fd leak and stale socket issues (security audit)#11
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Fix fd leak and stale socket issues (security audit)#11
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1. Close socket on remote_init failure (com.c) When early connect succeeds but DBGp handshake fails, the socket was never closed — causing fd exhaustion under repeated failures. 2. Reset socket fd to -1 after close (com.c) xdebug_mark_debug_connection_not_active() closed the socket but left the old fd value, risking use-after-close if the fd is reused. 3. Add PHP_DEBUGGER_SESSION_START to RINIT pre-check (xdebug.c) The early connect pre-check only tested XDEBUG_SESSION_START env var but not the new alias, causing early connect to be skipped when using the new trigger name.
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Rebased from closed PR #9.
Fixes file descriptor leaks and stale socket issues identified during security audit.