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.\" ========================================================================
.\"
.IX Title "xpaclient 3"
.TH xpaclient 3 "July 23, 2013" "version 2.1.15" "SAORD Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
\&\fBXPAClient: The \s-1XPA\s0 Client-side Programming Interface\fR
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
A description of the \s-1XPA\s0 client-side programming interface.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBIntroduction to \s-1XPA\s0 Client Programming\fR
.PP
Sending/receiving data to/from an \s-1XPA\s0 access point is easy: you
generally only need to call the \fIXPAGet()\fR or \fIXPASet()\fR subroutines.
.PP
.Vb 1
\& #include <xpa.h>
\&
\& int XPAGet(XPA xpa,
\& char *template, char *paramlist, char *mode,
\& char **bufs, size_t *lens, char **names, char **messages, int n);
\&
\& int XPASet(XPA xpa,
\& char *template, char *paramlist, char *mode,
\& char *buf, size_t len, char **names, char **messages, int n);
\&
\& int XPAInfo(XPA xpa,
\& char *template, char *paramlist, char *mode,
\& char **names, char **messages, int n);
\&
\& int XPAAccess(XPA xpa,
\& char *template, char *paramlist, char *mode,
\& char **names, char **messages, int n);
\&
\& int XPAGetFd(XPA xpa,
\& char *template, char *paramlist, char *mode,
\& int *fds, char **names, char **messages, int n);
\&
\& int XPASetFd(XPA xpa,
\& char *template, char *paramlist, char *mode,
\& int fd, char **names, char **messages, int n);
\&
\& XPA XPAOpen(char *mode);
\&
\& void XPAClose(XPA xpa);
\&
\& int XPANSLookup(XPA xpa,
\& char *template, char *type,
\& char ***classes, char ***names, char ***methods, char ***infos);
.Ve
.PP
\&\fBIntroduction\fR
.PP
To use the \s-1XPA\s0 application programming interface, a software developer
generally will include the xpa.h definitions file:
.PP
.Vb 1
\& #include <xpa.h>
.Ve
.PP
in the software module that defines or accesses an \s-1XPA\s0 access point and
then will link against the libxpa.a library:
.PP
.Vb 1
\& gcc \-o foo foo.c libxpa.a
.Ve
.PP
\&\s-1XPA\s0 has been compiled using both C and \*(C+ compilers.
.PP
Client communication with \s-1XPA\s0 public access points generally is
accomplished using \fIXPAGet()\fR or \fIXPASet()\fR within a program (or xpaget
and xpaset at the command line). Both routines require specification
of the name of the access point. If a template
is used to specify the access point name (e.g., \*(L"ds9*\*(R"), then
communication will take place with all servers matching that template.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
See xpa(n) for a list of \s-1XPA\s0 help pages
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