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xpaclient

NAME

XPAClient: The XPA Client-side Programming Interface

SYNOPSIS

A description of the XPA client-side programming interface.

DESCRIPTION

Introduction to XPA Client Programming

Sending/receiving data to/from an XPA access point is easy: you generally only need to call the XPAGet() or XPASet() subroutines.

   #include <xpa.h>
 
 

   int XPAGet(XPA xpa,
       char *template, char *paramlist, char *mode,
       char **bufs, int *lens, char **names, char **messages, int n);
 
 

   int XPASet(XPA xpa,
       char *template, char *paramlist, char *mode,
       char *buf, int 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);
 
 

Introduction

To use the XPA application programming interface, a software developer generally will include the xpa.h definitions file:

   #include <xpa.h>
 
 

in the software module that defines or accesses an XPA access point and then will link against the libxpa.a library:

   gcc -o foo foo.c libxpa.a
 
 

XPA has been compiled using both C and C++ compilers.

Client communication with XPA public access points generally is accomplished using XPAGet() or XPASet() 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., ``ds9*''), then communication will take place with all servers matching that template.

SEE ALSO

See xpa(n) for a list of XPA help pages