/** * Method derived from interface SipListener. It's fired from the SipProvider when a new message * is received for to the present TransactionClient. */ public void onReceivedMessage(SipProvider provider, Message msg) { if (msg.isResponse()) { int code = msg.getStatusLine().getCode(); if (code >= 100 && code < 200 && (statusIs(STATE_TRYING) || statusIs(STATE_PROCEEDING))) { if (statusIs(STATE_TRYING)) changeStatus(STATE_PROCEEDING); if (transaction_listener != null) transaction_listener.onTransProvisionalResponse(this, msg); return; } if (code >= 200 && code < 700 && (statusIs(STATE_TRYING) || statusIs(STATE_PROCEEDING))) { retransmission_to.halt(); transaction_to.halt(); changeStatus(STATE_COMPLETED); if (code < 300) { if (transaction_listener != null) transaction_listener.onTransSuccessResponse(this, msg); } else { if (transaction_listener != null) transaction_listener.onTransFailureResponse(this, msg); } transaction_listener = null; if (true || connection_id == null) // modified clearing_to.start(); else { printLog("clearing_to=0 for reliable transport", LogLevel.LOW); onTimeout(clearing_to); } return; } } }
/** * Inherited from class SipProviderListener. Called when a new message is received (out of any * ongoing transaction) for the current InviteDialog. Always checks for out-of-date methods (CSeq * header sequence number). * * <p>If the message is ACK(2xx/INVITE) request, it moves to D_CALL state, and fires * <i>onDlgAck(this,body,msg)</i>. * * <p>If the message is 2xx(INVITE) response, it create a new AckTransactionClient * * <p>If the message is BYE, it moves to D_BYED state, removes the listener from SipProvider, * fires onDlgBye(this,msg) then it responds with 200 OK, moves to D_CLOSE state and fires * onDlgClose(this) */ public void onReceivedMessage(SipProvider sip_provider, Message msg) { printLog("inside onReceivedMessage(sip_provider,message)", LogLevel.MEDIUM); if (msg.isRequest() && !(msg.isAck() || msg.isCancel()) && msg.getCSeqHeader().getSequenceNumber() <= getRemoteCSeq()) { printLog("Request message is too late (CSeq too small): Message discarded", LogLevel.HIGH); return; } // invite received if (msg.isRequest() && msg.isInvite()) { verifyStatus(statusIs(D_INIT) || statusIs(D_CALL)); // NOTE: if the invite_ts.listen() is used, you should not arrive // here with the D_INIT state.. // however state D_INIT has been included for robustness against // further changes. if (statusIs(D_INIT)) changeStatus(D_INVITED); else changeStatus(D_ReINVITED); invite_req = msg; invite_ts = new InviteTransactionServer(sip_provider, invite_req, this); // ((TransactionServer)transaction).listen(); update(Dialog.UAS, invite_req); if (statusIs(D_INVITED)) listener.onDlgInvite( this, invite_req.getToHeader().getNameAddress(), invite_req.getFromHeader().getNameAddress(), invite_req.getBody(), invite_req); else listener.onDlgReInvite(this, invite_req.getBody(), invite_req); } else // ack (of 2xx of INVITE) if (msg.isRequest() && msg.isAck()) { if (!verifyStatus(statusIs(D_ACCEPTED) || statusIs(D_ReACCEPTED))) return; changeStatus(D_CALL); // terminates the AckTransactionServer ack_ts.terminate(); listener.onDlgAck(this, msg.getBody(), msg); listener.onDlgCall(this); } else // keep sending ACK (if already sent) for any "200 OK" received if (msg.isResponse()) { if (!verifyStatus(statusIs(D_CALL))) return; int code = msg.getStatusLine().getCode(); verifyThat(code >= 200 && code < 300, "code 2xx was expected"); if (ack_req != null) { AckTransactionClient ack_tc = new AckTransactionClient(sip_provider, ack_req, null); ack_tc.request(); } } else // bye received if (msg.isRequest() && msg.isBye()) { if (!verifyStatus(statusIs(D_CALL) || statusIs(D_BYEING))) return; changeStatus(D_BYED); bye_ts = new TransactionServer(sip_provider, msg, this); // automatically sends a 200 OK Message resp = MessageFactory.createResponse(msg, 200, SipResponses.reasonOf(200), null); respond(resp); listener.onDlgBye(this, msg); changeStatus(D_CLOSE); listener.onDlgClose(this); } else // cancel received if (msg.isRequest() && msg.isCancel()) { if (!verifyStatus(statusIs(D_INVITED) || statusIs(D_ReINVITED))) return; // create a CANCEL TransactionServer and send a 200 OK (CANCEL) TransactionServer ts = new TransactionServer(sip_provider, msg, null); // ts.listen(); ts.respondWith(MessageFactory.createResponse(msg, 200, SipResponses.reasonOf(200), null)); // automatically sends a 487 Cancelled Message resp = MessageFactory.createResponse(invite_req, 487, SipResponses.reasonOf(487), null); respond(resp); listener.onDlgCancel(this, msg); } else // any other request received if (msg.isRequest()) { TransactionServer ts = new TransactionServer(sip_provider, msg, null); // ts.listen(); ts.respondWith(MessageFactory.createResponse(msg, 405, SipResponses.reasonOf(405), null)); } }