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.\" DO NOT MODIFY THIS FILE! It was generated by gdoc.
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.TH "gnutls_record_recv_early_data" 3 "3.6.14" "gnutls" "gnutls"
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.SH NAME
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gnutls_record_recv_early_data \- API function
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.SH SYNOPSIS
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.B #include <gnutls/gnutls.h>
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.sp
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.BI "ssize_t gnutls_record_recv_early_data(gnutls_session_t " session ", void * " data ", size_t " data_size ");"
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.SH ARGUMENTS
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.IP "gnutls_session_t session" 12
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is a \fBgnutls_session_t\fP type.
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.IP "void * data" 12
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the buffer that the data will be read into
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.IP "size_t data_size" 12
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the number of requested bytes
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.SH "DESCRIPTION"
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This function can be used by a searver to retrieve data sent early
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in the handshake processes when resuming a session. This is used
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to implement a zero\-roundtrip (0\-RTT) mode. It has the same
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semantics as \fBgnutls_record_recv()\fP.
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This function can be called either in a handshake hook, or after
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the handshake is complete.
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.SH "RETURNS"
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The number of bytes received and zero when early data
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reading is complete. A negative error code is returned in case of
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an error. If no early data is received during the handshake, this
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function returns \fBGNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE\fP. The
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number of bytes received might be less than the requested
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\fIdata_size\fP .
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.SH "SINCE"
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3.6.5
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.SH "REPORTING BUGS"
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Report bugs to <bugs@gnutls.org>.
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.br
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Home page: https://www.gnutls.org
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.SH COPYRIGHT
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Copyright \(co 2001- Free Software Foundation, Inc., and others.
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.br
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved.
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.SH "SEE ALSO"
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The full documentation for
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.B gnutls
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is maintained as a Texinfo manual.
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If the /usr/share/doc/gnutls/
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directory does not contain the HTML form visit
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.B
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.IP https://www.gnutls.org/manual/
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.PP
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