SJ timer API cleanup; added setInterval and clear*

Timers/intervals are now implemented on top of Mongoose.
Got rid of all the platform-specific code (yay!)

Added interval support and ability to clear previously added timeouts.

PUBLISHED_FROM=93866dd80b95b0fa6e137d87f86138330e720154

mongoose.c

@@ -3020,6 +3020,24 @@ double mg_set_timer(struct mg_connection *c, double timestamp) {
   return result;
 }
 
+struct mg_connection *mg_add_sock_opt(struct mg_mgr *s, sock_t sock,
+                                      mg_event_handler_t callback,
+                                      struct mg_add_sock_opts opts) {
+  struct mg_connection *nc = mg_create_connection(s, callback, opts);
+  if (nc != NULL) {
+    mg_sock_set(nc, sock);
+    mg_add_conn(nc->mgr, nc);
+  }
+  return nc;
+}
+
+struct mg_connection *mg_add_sock(struct mg_mgr *s, sock_t sock,
+                                  mg_event_handler_t callback) {
+  struct mg_add_sock_opts opts;
+  memset(&opts, 0, sizeof(opts));
+  return mg_add_sock_opt(s, sock, callback, opts);
+}
+
 double mg_time() {
   return cs_time();
 }
@@ -3040,7 +3058,6 @@ double mg_time() {
 #define MG_UDP_RECV_BUFFER_SIZE 1500
 
 static sock_t mg_open_listening_socket(union socket_address *sa, int proto);
-static void mg_sock_set(struct mg_connection *nc, sock_t sock);
 #ifdef MG_ENABLE_SSL
 static void mg_ssl_begin(struct mg_connection *nc);
 static int mg_ssl_err(struct mg_connection *conn, int res);
@@ -3500,26 +3517,8 @@ static void mg_mgr_handle_ctl_sock(struct mg_mgr *mgr) {
 }
 #endif
 
-struct mg_connection *mg_add_sock(struct mg_mgr *s, sock_t sock,
-                                  mg_event_handler_t callback) {
-  struct mg_add_sock_opts opts;
-  memset(&opts, 0, sizeof(opts));
-  return mg_add_sock_opt(s, sock, callback, opts);
-}
-
-struct mg_connection *mg_add_sock_opt(struct mg_mgr *s, sock_t sock,
-                                      mg_event_handler_t callback,
-                                      struct mg_add_sock_opts opts) {
-  struct mg_connection *nc = mg_create_connection(s, callback, opts);
-  if (nc != NULL) {
-    mg_sock_set(nc, sock);
-    mg_add_conn(nc->mgr, nc);
-  }
-  return nc;
-}
-
 /* Associate a socket to a connection. */
-static void mg_sock_set(struct mg_connection *nc, sock_t sock) {
+void mg_sock_set(struct mg_connection *nc, sock_t sock) {
   mg_set_non_blocking_mode(sock);
   mg_set_close_on_exec(sock);
   nc->sock = sock;

mongoose.h

@@ -1575,6 +1575,9 @@ void mg_close_conn(struct mg_connection *nc);
 void mg_if_get_conn_addr(struct mg_connection *nc, int remote,
                          union socket_address *sa);
 
+/* Associate a socket to a connection. */
+void mg_sock_set(struct mg_connection *nc, sock_t sock);
+
 #endif /* CS_MONGOOSE_SRC_NET_IF_H_ */
 /*
  * Copyright (c) 2014 Cesanta Software Limited