Fix WiFiServer::available() returning valid client on outbound client connection

Author: sandeepmistry

src/WiFiClient.cpp

@@ -41,7 +41,7 @@ WiFiClient::WiFiClient(uint8_t sock, uint8_t parentsock)
 	_socket = sock;
 	_flag = SOCKET_BUFFER_FLAG_CONNECTED;
 	if (parentsock) {
-		_flag |= ((uint32_t)(parentsock - 1)) << SOCKET_BUFFER_FLAG_PARENT_SOCKET_POS;
+		_flag |= ((uint32_t)parentsock) << SOCKET_BUFFER_FLAG_PARENT_SOCKET_POS;
 	}
 	_head = 0;
 	_tail = 0;

src/WiFiServer.cpp

@@ -103,7 +103,7 @@ WiFiClient WiFiServer::available(uint8_t* status)
 		for (int sock = 0; sock < TCP_SOCK_MAX; sock++) {
 			client = WiFi._client[sock];
 			if (client && client->_flag & SOCKET_BUFFER_FLAG_CONNECTED) {
-				if (((client->_flag >> SOCKET_BUFFER_FLAG_PARENT_SOCKET_POS) & 0xff) == (uint8)_socket) {
+				if (((client->_flag >> SOCKET_BUFFER_FLAG_PARENT_SOCKET_POS) & 0xff) == (uint8)(_socket + 1)) {
 					return *client;
 				}
 			}