Optimizations: remove multiple calls to the status() function.

Author: mathertel

libraries/Ethernet/src/EthernetClient.cpp

@@ -131,12 +131,17 @@ void EthernetClient::stop() {
   disconnect(_sock);
   unsigned long start = millis();
 
-  // wait a second for the connection to close
-  while (status() != SnSR::CLOSED && millis() - start < 1000)
+  // wait up to a second for the connection to close
+  uint8_t s;
+  do {
+    s = status();
+    if (s == SnSR::CLOSED)
+      break; // exit the loop
     delay(1);
+  } while (millis() - start < 1000);
 
   // if it hasn't closed, close it forcefully
-  if (status() != SnSR::CLOSED)
+  if (s != SnSR::CLOSED)
     close(_sock);
 
   EthernetClass::_server_port[_sock] = 0;

libraries/Ethernet/src/EthernetServer.cpp

@@ -54,12 +54,13 @@ EthernetClient EthernetServer::available()
 
   for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
     EthernetClient client(sock);
-    if (EthernetClass::_server_port[sock] == _port &&
-        (client.status() == SnSR::ESTABLISHED ||
-         client.status() == SnSR::CLOSE_WAIT)) {
-      if (client.available()) {
-        // XXX: don't always pick the lowest numbered socket.
-        return client;
+    if (EthernetClass::_server_port[sock] == _port) {
+      uint8_t s = client.status();
+      if (s == SnSR::ESTABLISHED || s == SnSR::CLOSE_WAIT) {
+        if (client.available()) {
+          // XXX: don't always pick the lowest numbered socket.
+          return client;
+        }
       }
     }
   }