1 .\" $OpenBSD: SSL_get_version.3,v 1.3 2016/12/10 13:12:08 schwarze Exp $
2 .\" OpenSSL bb9ad09e Jun 6 00:43:05 2016 -0400
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51 .Dd $Mdocdate: December 10 2016 $
57 .Nd get the protocol version of a connection
61 .Fn SSL_get_version "const SSL *ssl"
63 .Fn SSL_version "const SSL *ssl"
66 returns the name of the protocol used for the connection
70 returns an integer constant representing that protocol.
72 The following strings or integers can be returned:
74 .It Qo TLSv1 Qc No or Dv TLS1_VERSION
75 The connection uses the TLSv1.0 protocol.
76 .It Qo TLSv1.1 Qc No or Dv TLS1_1_VERSION
77 The connection uses the TLSv1.1 protocol.
78 .It Qo TLSv1.2 Qc No or Dv TLS1_2_VERSION
79 The connection uses the TLSv1.2 protocol.
80 .It Qo DTLSv1 Qc No or Dv DTLS1_VERSION
81 The connection uses the Datagram Transport Layer Security 1.0 protocol.
83 This indicates that no version has been set (no connection established).
91 are available in all versions of OpenSSL.