libtelnet/man/telnet_negotiate.3

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.TH telnet_negotiate 3 LIBTELNET "" "TELNET Library"
.SH NAME
\fBtelnet_negotiate\fP - TELNET option negotiation
.SH SYNOPSIS
.PP
\fB#include <libtelnet.h>\fP
.sp
.B "void telnet_negotiate(telnet_t *\fBtelnet\fR, unsigned char \fBcmd\fR, unsigned char \fIopt\fR);"
.SH DESCRIPTION
.PP
The \fBtelnet_negotiate\fP function is used to request option negotiation. RFC1143 negotiation (Q-method negotiation) is automatically used by libtelnet internally. If the requested option is not already enabled/disabled as desired, negotiation will take place; otherwise, nothing will happen.
The parameter \fItelnet\fP is a state tracker instance created by a prior call to \fBtelnet_init\fP.
The parameter \fIcmd\fP must be one of:
.TP
\fBTELNET_WILL\fP
Request permission to enable an option on the local end.
.TP
\fBTELNET_WONT\fP
Request permission to disable an option on the local end.
.TP
\fBTELNET_DO\fP
Request for the peer to enable an option on the peer's end.
.TP
\fBTELNET_DONT\fP
Request for the peer to disable an option on the peer's end.
.PP
The parameter \fIopt\fP is the TELNET option being negotiated. It should be one of the TELNET_OPTION_* constants.
.SH SEE ALSO
.PP
\fBlibtelnet\fR(3), \fBtelnet_send\fR(3), \fBtelnet_iac\fR(3)