ACSE/Presentation and ROSE Interface Programmer's Guide

Chapter 3 39

Using ACSE/Presentation

Step 2: Establish an Association

Process B can reject the connection if the proposed transfer syntax is not

supported by setting the res ﬁeld in structure ap_cdrl_t to USER_REJ or

PROV_REJ and prov_rsn is the reason for the reject. If the process

cannot accept the association request for other reasons, the process sets

the reason using the A_ASSOC_RSP primitive.

Figure 3-7 Conﬁrm Association

Communication

Endpoint A

Endpoint B

Process A

Process B

AP Environment A AP Environment B

Initiator

Responder

ap_snd()

request assoc.

ap_poll()

(listening)

ap_rcv()

ap_get_env()

ap_set_env()

AP_PCDL,pcdl

AP_PCDRL.pcdrl