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;
 }