reset static var in readMetadata()

The variables in readMetadata () must be reset each time connecttohost () is called. If metadata is sent when changing the radio station, the metadata will otherwise be incorrectly controlled and thus errors in the mp3 decoder will occur

src/Audio.h

@@ -2,7 +2,7 @@
  * Audio.h
  *
  *  Created on: Oct 26,2018
- *  Updated on: Jul 30,2021
+ *  Updated on: Aug 01,2021
  *      Author: Wolle (schreibfaul1)
  */
 
@@ -13,7 +13,8 @@
 #pragma GCC optimize ("Ofast")
 
 #include "Arduino.h"
-#include "base64.h"
+#include "libb64/cdecode.h"
+#include "libb64/cencode.h"
 #include "SPI.h"
 #include "WiFi.h"
 #include "WiFiClientSecure.h"
@@ -216,10 +217,10 @@ private:
     void showstreamtitle(const char* ml);
     bool parseContentType(const char* ct);
     void processAudioHeaderData();
-    bool readMetadata(uint8_t b);
+    bool readMetadata(uint8_t b, bool first = false);
     esp_err_t I2Sstart(uint8_t i2s_num);
     esp_err_t I2Sstop(uint8_t i2s_num);
-    void urlencode(char* buff, uint16_t buffLen);
+    void urlencode(char* buff, uint16_t buffLen, bool spacesOnly = false);
     int16_t* IIR_filterChain0(int16_t iir_in[2], bool clear = false);
     int16_t* IIR_filterChain1(int16_t* iir_in, bool clear = false);
     int16_t* IIR_filterChain2(int16_t* iir_in, bool clear = false);
@@ -269,6 +270,36 @@ private:
         }
         return result;
     }
+    bool b64encode(const char* source, uint16_t sourceLength, char* dest){
+        size_t size = base64_encode_expected_len(sourceLength) + 1;
+        char * buffer = (char *) malloc(size);
+        if(buffer) {
+            base64_encodestate _state;
+            base64_init_encodestate(&_state);
+            int len = base64_encode_block(&source[0], sourceLength, &buffer[0], &_state);
+            len = base64_encode_blockend((buffer + len), &_state);
+            memcpy(dest, buffer, strlen(buffer));
+            dest[strlen(buffer)] = '\0';
+            free(buffer);
+            return true;
+        }
+        return false;
+    }
+    size_t urlencode_expected_len(const char* source){
+        size_t expectedLen = strlen(source);
+        for(int i = 0; i < strlen(source); i++) {
+            if(isalnum(source[i])){;}
+            else expectedLen += 2;
+        }
+        return expectedLen;
+    }
+    void trim(char* s){
+        while(isspace(*s)) s++;  // ltrim
+        char* back = s + strlen(s);
+        while(isspace(*--back));
+        *(back + 1) = '\0';      // rtrim
+    }
+
 
 private:
     enum : int { APLL_AUTO = -1, APLL_ENABLE = 1, APLL_DISABLE = 0 };