Fix COAP example, reduce number of ctx switches

    PUBLISHED_FROM=7010fff404826c3dfc783d2cbdcbd0936a8a2b85

examples/coap_client/coap_client.c

@@ -2,14 +2,14 @@
  * Copyright (c) 2015 Cesanta Software Limited
  * All rights reserved
  *
- * This program sends CoAP CON-message to server (coap.me by default) 
+ * This program sends CoAP CON-message to server (coap.me by default)
  * and waits for answer.
  */
 
 #include "mongoose.h"
 
 static int s_time_to_exit = 0;
-static char* s_default_address = "udp://coap.me:5683";
+static char *s_default_address = "udp://coap.me:5683";
 
 static void coap_handler(struct mg_connection *nc, int ev, void *p) {
   switch (ev) {
@@ -31,17 +31,16 @@ static void coap_handler(struct mg_connection *nc, int ev, void *p) {
       break;
     }
     case MG_EV_COAP_ACK:
-    case MG_EV_COAP_RST:  {
-      struct mg_coap_message *cm = (struct mg_coap_message *)p;
-      printf("ACK/RST for message with msg_id = %d received\n",
-             cm->msg_id);
+    case MG_EV_COAP_RST: {
+      struct mg_coap_message *cm = (struct mg_coap_message *) p;
+      printf("ACK/RST for message with msg_id = %d received\n", cm->msg_id);
       s_time_to_exit = 1;
       break;
     }
   }
 }
 
-int main(int argc, char* argv[]) {
+int main(int argc, char *argv[]) {
   struct mg_mgr mgr;
   struct mg_connection *nc;
   char *address = s_default_address;
@@ -50,7 +49,7 @@ int main(int argc, char* argv[]) {
     address = argv[1];
   }
 
-  printf("Using %s as CoAP server\n", address); 
+  printf("Using %s as CoAP server\n", address);
 
   mg_mgr_init(&mgr, 0);
 
@@ -63,10 +62,10 @@ int main(int argc, char* argv[]) {
   mg_set_protocol_coap(nc);
 
   while (!s_time_to_exit) {
-    mg_mgr_poll(&mgr, 1);
+    mg_mgr_poll(&mgr, 1000000);
   }
 
   mg_mgr_free(&mgr);
-  
+
   return 0;
 }

examples/coap_server/coap_server.c

@@ -2,18 +2,18 @@
  * Copyright (c) 2015 Cesanta Software Limited
  * All rights reserved
  *
- * This program listens on 5683 for CoAP messages, 
+ * This program listens on 5683 for CoAP messages,
  * sends ACK is nessesary and dump everything received.
  * It is possible to use ../coap_client to send message.
  */
 
 #include "mongoose.h"
 
-static char* s_default_address = "udp://:5683";
+static char *s_default_address = "udp://:5683";
 static int s_sig_received = 0;
 
 static void signal_handler(int sig_num) {
-  signal(sig_num, signal_handler); 
+  signal(sig_num, signal_handler);
   s_sig_received = sig_num;
 }
 
@@ -21,7 +21,7 @@ static void coap_handler(struct mg_connection *nc, int ev, void *p) {
   switch (ev) {
     case MG_EV_COAP_CON: {
       uint32_t res;
-      struct mg_coap_message *cm = (struct mg_coap_message *)p;
+      struct mg_coap_message *cm = (struct mg_coap_message *) p;
       printf("CON with msg_id = %d received\n", cm->msg_id);
       res = mg_coap_send_ack(nc, cm->msg_id);
       if (res == 0) {
@@ -34,10 +34,9 @@ static void coap_handler(struct mg_connection *nc, int ev, void *p) {
     }
     case MG_EV_COAP_NOC:
     case MG_EV_COAP_ACK:
-    case MG_EV_COAP_RST:  {
-      struct mg_coap_message *cm = (struct mg_coap_message *)p;
-      printf("ACK/RST/NOC with msg_id = %d received\n",
-             cm->msg_id);
+    case MG_EV_COAP_RST: {
+      struct mg_coap_message *cm = (struct mg_coap_message *) p;
+      printf("ACK/RST/NOC with msg_id = %d received\n", cm->msg_id);
       break;
     }
   }
@@ -58,12 +57,12 @@ int main() {
     return -1;
   }
 
-  printf("Listening for CoAP messages at %s\n", s_default_address); 
+  printf("Listening for CoAP messages at %s\n", s_default_address);
 
   mg_set_protocol_coap(nc);
 
   while (!s_sig_received) {
-    mg_mgr_poll(&mgr, 1);
+    mg_mgr_poll(&mgr, 1000000);
   }
 
   printf("Exiting on signal %d\n", s_sig_received);