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+=pod
+
+=head1 NAME
+
+
+
+B<XPAOpen: allocate a persistent client handle>
+
+
+
+=head1 SYNOPSIS
+
+
+
+
+
+  #include <xpa.h>
+
+  XPA XPAOpen(char *mode);
+
+
+
+
+
+=head1 DESCRIPTION
+
+
+
+
+XPAOpen() allocates a persistent XPA struct that can be used with
+calls to XPAGet(), XPASet(), XPAInfo(), XPAGetFd(), and
+XPASetFd(). Persistence means that a connection to an XPA server is
+not closed when one of the above calls is completed but will be
+re-used on successive calls. Using XPAOpen() therefore saves the time
+it takes to connect to a server, which could be significant with slow
+connections or if there will be a large number of exchanges with a
+given access point.  The mode argument currently is ignored ("reserved
+for future use").
+
+
+An XPA struct is returned if XPAOpen() was successful; otherwise NULL
+is returned. This returned struct can be passed as the first argument
+to XPAGet(), etc.  Those calls will update the list of active XPA
+connections.  Already connected servers (from a previous call) are
+left connected and new servers also will be connected.  Old servers
+(from a previous call) that are no longer needed are disconnected.
+The connected servers will remain connected when the next call to
+XPAGet() is made and connections are once again updated.
+
+
+B<Example:>
+
+ #include <xpa.h>
+
+  XPA xpa;
+  xpa = XPAOpen(NULL);
+
+
+
+
+
+=head1 SEE ALSO
+
+
+
+See xpa(n) for a list of XPA help pages
+
+
+=cut