20ecf2a66b
this new class uses the newly introduced HttpRequestConfig and performs HTTP requests using this config. it will be reused for other power meters (SML over HTTP(S)) and may be reused by other features in the future (battery provider, solar power provider, etc.).
78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include "Configuration.h"
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#include <memory>
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#include <vector>
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#include <utility>
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#include <string>
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#include <HTTPClient.h>
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#include <WiFiClient.h>
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using up_http_client_t = std::unique_ptr<HTTPClient>;
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using sp_wifi_client_t = std::shared_ptr<WiFiClient>;
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class HttpRequestResult {
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public:
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HttpRequestResult(bool success,
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up_http_client_t upHttpClient = nullptr,
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sp_wifi_client_t spWiFiClient = nullptr)
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: _success(success)
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, _upHttpClient(std::move(upHttpClient))
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, _spWiFiClient(std::move(spWiFiClient)) { }
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~HttpRequestResult() {
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// the wifi client *must* die *after* the http client, as the http
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// client uses the wifi client in its destructor.
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if (_upHttpClient) { _upHttpClient->end(); }
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_upHttpClient = nullptr;
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_spWiFiClient = nullptr;
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}
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HttpRequestResult(HttpRequestResult const&) = delete;
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HttpRequestResult(HttpRequestResult&&) = delete;
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HttpRequestResult& operator=(HttpRequestResult const&) = delete;
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HttpRequestResult& operator=(HttpRequestResult&&) = delete;
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operator bool() const { return _success; }
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Stream* getStream() {
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if(!_upHttpClient) { return nullptr; }
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return _upHttpClient->getStreamPtr();
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}
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private:
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bool _success;
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up_http_client_t _upHttpClient;
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sp_wifi_client_t _spWiFiClient;
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};
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class HttpGetter {
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public:
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explicit HttpGetter(HttpRequestConfig const& cfg)
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: _config(cfg) { }
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bool init();
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void addHeader(char const* key, char const* value);
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HttpRequestResult performGetRequest();
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char const* getErrorText() const { return _errBuffer; }
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private:
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String getAuthDigest(String const& authReq, unsigned int counter);
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HttpRequestConfig const& _config;
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template<typename... Args>
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void logError(char const* format, Args... args);
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char _errBuffer[256];
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bool _useHttps;
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String _host;
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String _uri;
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uint16_t _port;
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sp_wifi_client_t _spWiFiClient; // reused for multiple HTTP requests
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std::vector<std::pair<std::string, std::string>> _additionalHeaders;
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};
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