Integrate many changes from master

lib/obp60task/NetworkClient.h

@@ -0,0 +1,42 @@
+#pragma once
+#include <ArduinoJson.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#define DEBUGING true             // Debug flag for NetworkClient for more live information
+#define READLIMIT 200000        // HTTP read limit in byte for gzip content (can be adjusted)
+#define CONNECTIONTIMEOUT 3000  // Timeout in ms for HTTP connection 
+#define TCPREADTIMEOUT 2000     // Timeout in ms for read HTTP client stack
+#define READDATATIMEOUT 2000    // Timeout in ms for read data
+
+class NetworkClient {
+public:
+    NetworkClient(size_t reserveSize = 0);
+    ~NetworkClient();
+
+    bool fetchAndDecompressJson(const String& url);
+    JsonDocument& json();
+    int imageWidth() const;
+    int imageHeight() const;
+    int numberPixels() const;
+    const char* pictureBase64() const;
+    size_t pictureBase64Len() const;
+    bool isValid() const;
+
+private:
+    DynamicJsonDocument _doc;
+    bool _valid;
+    uint8_t* _jsonRaw;
+    size_t _jsonRawLen;
+    int _imageWidth;
+    int _imageHeight;
+    int _numberPixels;
+    char* _pictureBase64;
+    size_t _pictureBase64Len;
+
+    int skipGzipHeader(const uint8_t* data, size_t len);
+    bool httpGetGzip(const String& url, uint8_t*& outData, size_t& outLen);
+    static bool findJsonIntField(const char* json, size_t len, const char* key, int& outValue);
+    static bool extractJsonStringInPlace(char* json, size_t len, const char* key, char*& outValue, size_t& outLen);
+};
+