http redirection

src/mp3.cpp

@@ -19,6 +19,8 @@
 #include "esp_system.h"
 #include <math.h>
 
+#include "HTTPClient.h"
+
 #include "alarmsound.h"
 
 char titleStr[64];
@@ -118,7 +120,22 @@ void MP3::mp3_decoder_task(void *pvParameters) {
 //  strcpy(titleStr, "loading...");
   if (fromProgmem) file = new AudioFileSourcePROGMEM(alarmsound, alarmsound_len);
   else if (rtttl_len > 0) file = new AudioFileSourcePROGMEM( rtttl, rtttl_len );
-  else file = new AudioFileSourceICYStream(URL);
+  else {
+    HTTPClient http;
+    http.begin(URL);
+    const char* headerNames[] = { "Location", "Last-Modified" };
+    http.collectHeaders(headerNames, sizeof(headerNames)/sizeof(headerNames[0]));
+    int httpCode = http.GET();
+    if (httpCode == HTTP_CODE_FOUND || httpCode == HTTP_CODE_SEE_OTHER) {  // check for redirect
+      Serial.println("redirect!!!!!!!!!!!!!!!");
+      if (http.hasHeader("Location")) {
+        Serial.println(http.header("Location"));
+        http.header("Location").toCharArray(URL, 80);
+      }
+    }
+    http.end();
+    file = new AudioFileSourceICYStream(URL);
+  }
   file->RegisterMetadataCB(MDCallback, (void*)"ICY");
   buff = new AudioFileSourceBuffer(file, preallocateBuffer, preallocateBufferSize);
   audiobuffer = buff;