SSL_CTX_sess_number.3ossl 4.8 KB

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  57. .IX Title "SSL_CTX_SESS_NUMBER 3ossl"
  58. .TH SSL_CTX_SESS_NUMBER 3ossl 2025-01-17 3.4.0 OpenSSL
  59. .\" For nroff, turn off justification. Always turn off hyphenation; it makes
  60. .\" way too many mistakes in technical documents.
  61. .if n .ad l
  62. .nh
  63. .SH NAME
  64. SSL_CTX_sess_number, SSL_CTX_sess_connect, SSL_CTX_sess_connect_good, SSL_CTX_sess_connect_renegotiate, SSL_CTX_sess_accept, SSL_CTX_sess_accept_good, SSL_CTX_sess_accept_renegotiate, SSL_CTX_sess_hits, SSL_CTX_sess_cb_hits, SSL_CTX_sess_misses, SSL_CTX_sess_timeouts, SSL_CTX_sess_cache_full \- obtain session cache statistics
  65. .SH SYNOPSIS
  66. .IX Header "SYNOPSIS"
  67. .Vb 1
  68. \& #include <openssl/ssl.h>
  69. \&
  70. \& long SSL_CTX_sess_number(SSL_CTX *ctx);
  71. \& long SSL_CTX_sess_connect(SSL_CTX *ctx);
  72. \& long SSL_CTX_sess_connect_good(SSL_CTX *ctx);
  73. \& long SSL_CTX_sess_connect_renegotiate(SSL_CTX *ctx);
  74. \& long SSL_CTX_sess_accept(SSL_CTX *ctx);
  75. \& long SSL_CTX_sess_accept_good(SSL_CTX *ctx);
  76. \& long SSL_CTX_sess_accept_renegotiate(SSL_CTX *ctx);
  77. \& long SSL_CTX_sess_hits(SSL_CTX *ctx);
  78. \& long SSL_CTX_sess_cb_hits(SSL_CTX *ctx);
  79. \& long SSL_CTX_sess_misses(SSL_CTX *ctx);
  80. \& long SSL_CTX_sess_timeouts(SSL_CTX *ctx);
  81. \& long SSL_CTX_sess_cache_full(SSL_CTX *ctx);
  82. .Ve
  83. .SH DESCRIPTION
  84. .IX Header "DESCRIPTION"
  85. \&\fBSSL_CTX_sess_number()\fR returns the current number of sessions in the internal
  86. session cache.
  87. .PP
  88. \&\fBSSL_CTX_sess_connect()\fR returns the number of started SSL/TLS handshakes in
  89. client mode.
  90. .PP
  91. \&\fBSSL_CTX_sess_connect_good()\fR returns the number of successfully established
  92. SSL/TLS sessions in client mode.
  93. .PP
  94. \&\fBSSL_CTX_sess_connect_renegotiate()\fR returns the number of started renegotiations
  95. in client mode.
  96. .PP
  97. \&\fBSSL_CTX_sess_accept()\fR returns the number of started SSL/TLS handshakes in
  98. server mode.
  99. .PP
  100. \&\fBSSL_CTX_sess_accept_good()\fR returns the number of successfully established
  101. SSL/TLS sessions in server mode.
  102. .PP
  103. \&\fBSSL_CTX_sess_accept_renegotiate()\fR returns the number of started renegotiations
  104. in server mode.
  105. .PP
  106. \&\fBSSL_CTX_sess_hits()\fR returns the number of successfully reused sessions.
  107. In client mode a session set with \fBSSL_set_session\fR\|(3)
  108. successfully reused is counted as a hit. In server mode a session successfully
  109. retrieved from internal or external cache is counted as a hit.
  110. .PP
  111. \&\fBSSL_CTX_sess_cb_hits()\fR returns the number of successfully retrieved sessions
  112. from the external session cache in server mode.
  113. .PP
  114. \&\fBSSL_CTX_sess_misses()\fR returns the number of sessions proposed by clients
  115. that were not found in the internal session cache in server mode.
  116. .PP
  117. \&\fBSSL_CTX_sess_timeouts()\fR returns the number of sessions proposed by clients
  118. and either found in the internal or external session cache in server mode,
  119. but that were invalid due to timeout. These sessions are not included in
  120. the \fBSSL_CTX_sess_hits()\fR count.
  121. .PP
  122. \&\fBSSL_CTX_sess_cache_full()\fR returns the number of sessions that were removed
  123. because the maximum session cache size was exceeded.
  124. .SH "RETURN VALUES"
  125. .IX Header "RETURN VALUES"
  126. The functions return the values indicated in the DESCRIPTION section.
  127. .SH "SEE ALSO"
  128. .IX Header "SEE ALSO"
  129. \&\fBssl\fR\|(7), \fBSSL_set_session\fR\|(3),
  130. \&\fBSSL_CTX_set_session_cache_mode\fR\|(3)
  131. \&\fBSSL_CTX_sess_set_cache_size\fR\|(3)
  132. .SH COPYRIGHT
  133. .IX Header "COPYRIGHT"
  134. Copyright 2001\-2016 The OpenSSL Project Authors. All Rights Reserved.
  135. .PP
  136. Licensed under the Apache License 2.0 (the "License"). You may not use
  137. this file except in compliance with the License. You can obtain a copy
  138. in the file LICENSE in the source distribution or at
  139. <https://www.openssl.org/source/license.html>.