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Avoid debug flooding with non-blocking reads

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Manuel Pégourié-Gonnard 2015-05-11 18:52:25 +02:00
parent e3a062ba1f
commit 4cba1a737d
1 changed files with 8 additions and 0 deletions
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8
library/debug.c
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@ -108,6 +108,14 @@ void mbedtls_debug_print_ret( const mbedtls_ssl_context *ssl, int level,
if( ssl->conf->f_dbg == NULL || level > debug_threshold ) if( ssl->conf->f_dbg == NULL || level > debug_threshold )
return; return;
/*
* With non-blocking I/O and examples that just retry immediately,
* the logs would be quickly flooded with WANT_READ, so ignore that.
* Don't ignore WANT_WRITE however, since is is usually rare.
*/
if( ret == MBEDTLS_ERR_SSL_WANT_READ )
return;
if( debug_log_mode == MBEDTLS_DEBUG_LOG_FULL ) if( debug_log_mode == MBEDTLS_DEBUG_LOG_FULL )
idx = mbedtls_snprintf( str, maxlen, "%s(%04d): ", file, line ); idx = mbedtls_snprintf( str, maxlen, "%s(%04d): ", file, line );