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131 .IX Title "SSL_pending 3"
132 .TH SSL_pending 3 "2017-12-07" "1.0.2n" "OpenSSL"
133 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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138 SSL_pending \- obtain number of readable bytes buffered in an SSL object
140 .IX Header "SYNOPSIS"
142 \& #include <openssl/ssl.h>
144 \& int SSL_pending(const SSL *ssl);
147 .IX Header "DESCRIPTION"
148 \&\fISSL_pending()\fR returns the number of bytes which are available inside
149 \&\fBssl\fR for immediate read.
152 Data are received in blocks from the peer. Therefore data can be buffered
153 inside \fBssl\fR and are ready for immediate retrieval with
154 \&\fISSL_read\fR\|(3).
156 .IX Header "RETURN VALUES"
157 The number of bytes pending is returned.
160 \&\fISSL_pending()\fR takes into account only bytes from the \s-1TLS/SSL\s0 record
161 that is currently being processed (if any). If the \fB\s-1SSL\s0\fR object's
162 \&\fIread_ahead\fR flag is set (see
163 \&\fISSL_CTX_set_read_ahead\fR\|(3)), additional protocol
164 bytes may have been read containing more \s-1TLS/SSL\s0 records; these are ignored by
165 \&\fISSL_pending()\fR.
167 Up to OpenSSL 0.9.6, \fISSL_pending()\fR does not check if the record type
168 of pending data is application data.
170 .IX Header "SEE ALSO"
171 \&\fISSL_read\fR\|(3),
172 \&\fISSL_CTX_set_read_ahead\fR\|(3), \fIssl\fR\|(3)