Patrick Barrett / libexositecoap

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API Documentation at this revision

Revision 29:004c318e63fa, committed 2015-01-07

Comitter:
Patrick Barrett
Date:
Wed Jan 07 14:20:56 2015 -0600
Parent:
28:07869ba0b6de
Commit message:
added retry on network error

Changed in this revision

src/exosite.c Show annotated file Show diff for this revision Revisions of this file
src/exosite.h Show annotated file Show diff for this revision Revisions of this file 
--- a/src/exosite.c	Wed Jan 07 14:23:55 2015 -0600
+++ b/src/exosite.c	Wed Jan 07 14:20:56 2015 -0600
@@ -203,6 +203,7 @@
   op->tkl = 0;
   op->token = 0;
   op->timeout = 0;
+  op->retries = 0;
 }
 
 void exo_op_done(exo_op *op)
@@ -504,8 +505,34 @@
           switch (op[i].type) {
             case EXO_READ:
             case EXO_WRITE:
-              // TODO: may want to do some sort of retry system
-              op[i].state = EXO_REQUEST_ERROR;
+            case EXO_ACTIVATE:
+              if (op[i].retries < COAP_MAX_RETRANSMIT){
+                switch (op[i].type) {
+                  case EXO_READ:
+                    exo_build_msg_read(&pdu, op[i].alias);
+                    break;
+                  case EXO_WRITE:
+                    exo_build_msg_write(&pdu, op[i].alias, op[i].value);
+                    break;
+                  case EXO_ACTIVATE:
+                    exo_build_msg_activate(&pdu, vendor, model, serial);
+                    break;
+                  default:
+                    break;
+                }
+
+                // reuse old mid and token
+                coap_set_mid(&pdu, op[i].mid);
+                coap_set_token(&pdu, op[i].token, op[i].tkl);
+
+                if (exopal_udp_send(pdu.buf, pdu.len) == 0) {
+                  op[i].retries++;
+                  op[i].timeout = exopal_get_time() + (op[i].retries * COAP_PROBING_RATE * 1000000)
+                                                    + (((uint64_t)rand() % 1500000));
+                }
+              } else {
+                op[i].state = EXO_REQUEST_ERROR;
+              }
               break;
             case EXO_SUBSCRIBE:
               // force a new observe request

--- a/src/exosite.h	Wed Jan 07 14:23:55 2015 -0600
+++ b/src/exosite.h	Wed Jan 07 14:20:56 2015 -0600
@@ -112,6 +112,7 @@
 	uint8_t tkl;
 	uint64_t token;
 	uint64_t timeout;
+	uint8_t retries;
 } exo_op;
 
 // PUBLIC FUNCTIONS