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Diffstat (limited to 'secure/lib/libcrypto/man/SSL_want.3')
| -rw-r--r-- | secure/lib/libcrypto/man/SSL_want.3 | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/SSL_want.3 b/secure/lib/libcrypto/man/SSL_want.3 new file mode 100644 index 000000000000..138ffcc82939 --- /dev/null +++ b/secure/lib/libcrypto/man/SSL_want.3 @@ -0,0 +1,228 @@ +.\" Automatically generated by Pod::Man 4.09 (Pod::Simple 3.35) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +SSL_want, SSL_want_nothing, SSL_want_read, SSL_want_write, SSL_want_x509_lookup, SSL_want_async, SSL_want_async_job, SSL_want_client_hello_cb \- obtain state information TLS/SSL I/O operation +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/ssl.h> +\& +\& int SSL_want(const SSL *ssl); +\& int SSL_want_nothing(const SSL *ssl); +\& int SSL_want_read(const SSL *ssl); +\& int SSL_want_write(const SSL *ssl); +\& int SSL_want_x509_lookup(const SSL *ssl); +\& int SSL_want_async(const SSL *ssl); +\& int SSL_want_async_job(const SSL *ssl); +\& int SSL_want_client_hello_cb(const SSL *ssl); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\fISSL_want()\fR returns state information for the \s-1SSL\s0 object \fBssl\fR. +.PP +The other SSL_want_*() calls are shortcuts for the possible states returned +by \fISSL_want()\fR. +.SH "NOTES" +.IX Header "NOTES" +\&\fISSL_want()\fR examines the internal state information of the \s-1SSL\s0 object. Its +return values are similar to that of \fISSL_get_error\fR\|(3). +Unlike \fISSL_get_error\fR\|(3), which also evaluates the +error queue, the results are obtained by examining an internal state flag +only. The information must therefore only be used for normal operation under +non-blocking I/O. Error conditions are not handled and must be treated +using \fISSL_get_error\fR\|(3). +.PP +The result returned by \fISSL_want()\fR should always be consistent with +the result of \fISSL_get_error\fR\|(3). +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +The following return values can currently occur for \fISSL_want()\fR: +.IP "\s-1SSL_NOTHING\s0" 4 +.IX Item "SSL_NOTHING" +There is no data to be written or to be read. +.IP "\s-1SSL_WRITING\s0" 4 +.IX Item "SSL_WRITING" +There are data in the \s-1SSL\s0 buffer that must be written to the underlying +\&\fB\s-1BIO\s0\fR layer in order to complete the actual SSL_*() operation. +A call to \fISSL_get_error\fR\|(3) should return +\&\s-1SSL_ERROR_WANT_WRITE.\s0 +.IP "\s-1SSL_READING\s0" 4 +.IX Item "SSL_READING" +More data must be read from the underlying \fB\s-1BIO\s0\fR layer in order to +complete the actual SSL_*() operation. +A call to \fISSL_get_error\fR\|(3) should return +\&\s-1SSL_ERROR_WANT_READ.\s0 +.IP "\s-1SSL_X509_LOOKUP\s0" 4 +.IX Item "SSL_X509_LOOKUP" +The operation did not complete because an application callback set by +\&\fISSL_CTX_set_client_cert_cb()\fR has asked to be called again. +A call to \fISSL_get_error\fR\|(3) should return +\&\s-1SSL_ERROR_WANT_X509_LOOKUP.\s0 +.IP "\s-1SSL_ASYNC_PAUSED\s0" 4 +.IX Item "SSL_ASYNC_PAUSED" +An asynchronous operation partially completed and was then paused. See +\&\fISSL_get_all_async_fds\fR\|(3). A call to \fISSL_get_error\fR\|(3) should return +\&\s-1SSL_ERROR_WANT_ASYNC.\s0 +.IP "\s-1SSL_ASYNC_NO_JOBS\s0" 4 +.IX Item "SSL_ASYNC_NO_JOBS" +The asynchronous job could not be started because there were no async jobs +available in the pool (see \fIASYNC_init_thread\fR\|(3)). A call to \fISSL_get_error\fR\|(3) +should return \s-1SSL_ERROR_WANT_ASYNC_JOB.\s0 +.IP "\s-1SSL_CLIENT_HELLO_CB\s0" 4 +.IX Item "SSL_CLIENT_HELLO_CB" +The operation did not complete because an application callback set by +\&\fISSL_CTX_set_client_hello_cb()\fR has asked to be called again. +A call to \fISSL_get_error\fR\|(3) should return +\&\s-1SSL_ERROR_WANT_CLIENT_HELLO_CB.\s0 +.PP +\&\fISSL_want_nothing()\fR, \fISSL_want_read()\fR, \fISSL_want_write()\fR, \fISSL_want_x509_lookup()\fR, +\&\fISSL_want_async()\fR, \fISSL_want_async_job()\fR, and \fISSL_want_client_hello_cb()\fR return +1, when the corresponding condition is true or 0 otherwise. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fIssl\fR\|(7), \fISSL_get_error\fR\|(3) +.SH "HISTORY" +.IX Header "HISTORY" +\&\fISSL_want_client_hello_cb()\fR and \s-1SSL_CLIENT_HELLO_CB\s0 were added in OpenSSL 1.1.1. +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +Copyright 2001\-2017 The OpenSSL Project Authors. All Rights Reserved. +.PP +Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file \s-1LICENSE\s0 in the source distribution or at +<https://www.openssl.org/source/license.html>. |