From 2d87bfa3d60a25a3a95de1d59e95a05cf4288ece Mon Sep 17 00:00:00 2001
From: Markus Sattler <help.markus+git@gmail.com>
Date: Sat, 6 Feb 2016 19:21:24 +0100
Subject: [PATCH] less ram usage when using strings

---
 src/WebSockets.cpp       | 2 +-
 src/WebSockets.h         | 2 +-
 src/WebSocketsClient.cpp | 2 +-
 src/WebSocketsClient.h   | 2 +-
 src/WebSocketsServer.cpp | 4 ++--
 src/WebSocketsServer.h   | 4 ++--
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/WebSockets.cpp b/src/WebSockets.cpp
index 2dede69..4e3aaab 100644
--- a/src/WebSockets.cpp
+++ b/src/WebSockets.cpp
@@ -473,7 +473,7 @@ void WebSockets::handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t
  * @param clientKey String
  * @return String Accept Key
  */
-String WebSockets::acceptKey(String clientKey) {
+String WebSockets::acceptKey(String & clientKey) {
     uint8_t sha1HashBin[20] = { 0 };
 #ifdef ESP8266
     sha1(clientKey + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", &sha1HashBin[0]);
diff --git a/src/WebSockets.h b/src/WebSockets.h
index 36e6b3a..1d46ef1 100644
--- a/src/WebSockets.h
+++ b/src/WebSockets.h
@@ -212,7 +212,7 @@ class WebSockets {
         void handleWebsocketCb(WSclient_t * client);
         void handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t * payload);
 
-        String acceptKey(String clientKey);
+        String acceptKey(String & clientKey);
         String base64_encode(uint8_t * data, size_t length);
 
         bool readCb(WSclient_t * client, uint8_t *out, size_t n, WSreadWaitCb cb);
diff --git a/src/WebSocketsClient.cpp b/src/WebSocketsClient.cpp
index 926fc28..6c38d2a 100644
--- a/src/WebSocketsClient.cpp
+++ b/src/WebSocketsClient.cpp
@@ -171,7 +171,7 @@ void WebSocketsClient::sendTXT(const char * payload, size_t length) {
     sendTXT((uint8_t *) payload, length);
 }
 
-void WebSocketsClient::sendTXT(String payload) {
+void WebSocketsClient::sendTXT(String & payload) {
     sendTXT((uint8_t *) payload.c_str(), payload.length());
 }
 
diff --git a/src/WebSocketsClient.h b/src/WebSocketsClient.h
index 702ebd6..9a66e47 100644
--- a/src/WebSocketsClient.h
+++ b/src/WebSocketsClient.h
@@ -61,7 +61,7 @@ class WebSocketsClient: private WebSockets {
         void sendTXT(const uint8_t * payload, size_t length = 0);
         void sendTXT(char * payload, size_t length = 0, bool headerToPayload = false);
         void sendTXT(const char * payload, size_t length = 0);
-        void sendTXT(String payload);
+        void sendTXT(String & payload);
 
         void sendBIN(uint8_t * payload, size_t length, bool headerToPayload = false);
         void sendBIN(const uint8_t * payload, size_t length);
diff --git a/src/WebSocketsServer.cpp b/src/WebSocketsServer.cpp
index ebde1bf..a81af57 100644
--- a/src/WebSocketsServer.cpp
+++ b/src/WebSocketsServer.cpp
@@ -148,7 +148,7 @@ void WebSocketsServer::sendTXT(uint8_t num, const char * payload, size_t length)
     sendTXT(num, (uint8_t *) payload, length);
 }
 
-void WebSocketsServer::sendTXT(uint8_t num, String payload) {
+void WebSocketsServer::sendTXT(uint8_t num, String & payload) {
     sendTXT(num, (uint8_t *) payload.c_str(), payload.length());
 }
 
@@ -187,7 +187,7 @@ void WebSocketsServer::broadcastTXT(const char * payload, size_t length) {
     broadcastTXT((uint8_t *) payload, length);
 }
 
-void WebSocketsServer::broadcastTXT(String payload) {
+void WebSocketsServer::broadcastTXT(String & payload) {
     broadcastTXT((uint8_t *) payload.c_str(), payload.length());
 }
 
diff --git a/src/WebSocketsServer.h b/src/WebSocketsServer.h
index bd02038..bf51bfd 100644
--- a/src/WebSocketsServer.h
+++ b/src/WebSocketsServer.h
@@ -61,13 +61,13 @@ public:
         void sendTXT(uint8_t num, const uint8_t * payload, size_t length = 0);
         void sendTXT(uint8_t num, char * payload, size_t length = 0, bool headerToPayload = false);
         void sendTXT(uint8_t num, const char * payload, size_t length = 0);
-        void sendTXT(uint8_t num, String payload);
+        void sendTXT(uint8_t num, String & payload);
 
         void broadcastTXT(uint8_t * payload, size_t length = 0, bool headerToPayload = false);
         void broadcastTXT(const uint8_t * payload, size_t length = 0);
         void broadcastTXT(char * payload, size_t length = 0, bool headerToPayload = false);
         void broadcastTXT(const char * payload, size_t length = 0);
-        void broadcastTXT(String payload);
+        void broadcastTXT(String & payload);
 
         void sendBIN(uint8_t num, uint8_t * payload, size_t length, bool headerToPayload = false);
         void sendBIN(uint8_t num, const uint8_t * payload, size_t length);