Update HTTPUpdate.cpp (espressif#4942)

This is a mirror of a change in esp8266 needed to update with a url that redirects.

Author: DTTerastar

libraries/HTTPUpdate/src/HTTPUpdate.cpp

@@ -35,11 +35,13 @@
 HTTPUpdate::HTTPUpdate(void)
         : _httpClientTimeout(8000), _ledPin(-1)
 {
+    _followRedirects = HTTPC_DISABLE_FOLLOW_REDIRECTS;
 }
 
 HTTPUpdate::HTTPUpdate(int httpClientTimeout)
         : _httpClientTimeout(httpClientTimeout), _ledPin(-1)
 {
+    _followRedirects = HTTPC_DISABLE_FOLLOW_REDIRECTS;
 }
 
 HTTPUpdate::~HTTPUpdate(void)
@@ -175,6 +177,7 @@ HTTPUpdateResult HTTPUpdate::handleUpdate(HTTPClient& http, const String& curren
     // use HTTP/1.0 for update since the update handler not support any transfer Encoding
     http.useHTTP10(true);
     http.setTimeout(_httpClientTimeout);
+    http.setFollowRedirects(_followRedirects);
     http.setUserAgent("ESP32-http-Update");
     http.addHeader("Cache-Control", "no-cache");
     http.addHeader("x-ESP32-STA-MAC", WiFi.macAddress());

libraries/HTTPUpdate/src/HTTPUpdate.h

@@ -63,6 +63,15 @@ class HTTPUpdate
     {
         _rebootOnUpdate = reboot;
     }
+    
+    /**
+      * set redirect follow mode. See `followRedirects_t` enum for avaliable modes.
+      * @param follow
+      */
+    void setFollowRedirects(followRedirects_t follow)
+    {
+        _followRedirects = follow;
+    }
 
     void setLedPin(int ledPin = -1, uint8_t ledOn = HIGH)
     {
@@ -89,6 +98,7 @@ class HTTPUpdate
     bool _rebootOnUpdate = true;
 private:
     int _httpClientTimeout;
+    followRedirects_t _followRedirects;
 
     int _ledPin;
     uint8_t _ledOn;