6.4.12 N_RC--Reset Response/Confirm

Synopsis

#include <stream.h>
 #include <netx25/x25_proto.h >

 struct strbuf ctlb;

 struct xrscf rc;
 .
 .
 .
 ctlb.len = sizeof(struct xrscf);
 ctlb.buf = (char *)rc;

 putmsg(x25_fd, &ctlb, NULL, 0);

Description

N_RC is used to respond to a previous reset. When used in a putmsg it is a Reset Response. In a getmsg it is a Reset Confirm. Example 6-1 shows how a getmsg can be constructed. The control part of the Reset Response or Confirm is defined by the xrscf structure. There is no data part.

The xrscf structure is shown below:

struct xrscf {
 	unsigned char xl_type; /* Always XL_CTL */
 	unsigned char xl_command; /* Always N_RC */
 };

A Reset primitive is an acknowledged service (see the associated structure xrscf). A collision between a Reset Indication and a Reset Request is taken to acknowledge the Reset--no Reset Confirmation is then required before another Reset Request can be sent. Normally, Resets are handled by the application.