/** * HTTPClient.h * * Created on: 02.11.2015 * * Copyright (c) 2015 Markus Sattler. All rights reserved. * This file is part of the HTTPClient for Arduino. * Port to ESP32 by Evandro Luis Copercini (2017), * changed fingerprints to CA verification. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #ifndef HTTPClient_H_ #define HTTPClient_H_ #include #include #include #include #define HTTPCLIENT_DEFAULT_TCP_TIMEOUT (5000) /// HTTP client errors #define HTTPC_ERROR_CONNECTION_REFUSED (-1) #define HTTPC_ERROR_SEND_HEADER_FAILED (-2) #define HTTPC_ERROR_SEND_PAYLOAD_FAILED (-3) #define HTTPC_ERROR_NOT_CONNECTED (-4) #define HTTPC_ERROR_CONNECTION_LOST (-5) #define HTTPC_ERROR_NO_STREAM (-6) #define HTTPC_ERROR_NO_HTTP_SERVER (-7) #define HTTPC_ERROR_TOO_LESS_RAM (-8) #define HTTPC_ERROR_ENCODING (-9) #define HTTPC_ERROR_STREAM_WRITE (-10) #define HTTPC_ERROR_READ_TIMEOUT (-11) /// size for the stream handling #define HTTP_TCP_BUFFER_SIZE (1460) /// HTTP codes see RFC7231 typedef enum { HTTP_CODE_CONTINUE = 100, HTTP_CODE_SWITCHING_PROTOCOLS = 101, HTTP_CODE_PROCESSING = 102, HTTP_CODE_OK = 200, HTTP_CODE_CREATED = 201, HTTP_CODE_ACCEPTED = 202, HTTP_CODE_NON_AUTHORITATIVE_INFORMATION = 203, HTTP_CODE_NO_CONTENT = 204, HTTP_CODE_RESET_CONTENT = 205, HTTP_CODE_PARTIAL_CONTENT = 206, HTTP_CODE_MULTI_STATUS = 207, HTTP_CODE_ALREADY_REPORTED = 208, HTTP_CODE_IM_USED = 226, HTTP_CODE_MULTIPLE_CHOICES = 300, HTTP_CODE_MOVED_PERMANENTLY = 301, HTTP_CODE_FOUND = 302, HTTP_CODE_SEE_OTHER = 303, HTTP_CODE_NOT_MODIFIED = 304, HTTP_CODE_USE_PROXY = 305, HTTP_CODE_TEMPORARY_REDIRECT = 307, HTTP_CODE_PERMANENT_REDIRECT = 308, HTTP_CODE_BAD_REQUEST = 400, HTTP_CODE_UNAUTHORIZED = 401, HTTP_CODE_PAYMENT_REQUIRED = 402, HTTP_CODE_FORBIDDEN = 403, HTTP_CODE_NOT_FOUND = 404, HTTP_CODE_METHOD_NOT_ALLOWED = 405, HTTP_CODE_NOT_ACCEPTABLE = 406, HTTP_CODE_PROXY_AUTHENTICATION_REQUIRED = 407, HTTP_CODE_REQUEST_TIMEOUT = 408, HTTP_CODE_CONFLICT = 409, HTTP_CODE_GONE = 410, HTTP_CODE_LENGTH_REQUIRED = 411, HTTP_CODE_PRECONDITION_FAILED = 412, HTTP_CODE_PAYLOAD_TOO_LARGE = 413, HTTP_CODE_URI_TOO_LONG = 414, HTTP_CODE_UNSUPPORTED_MEDIA_TYPE = 415, HTTP_CODE_RANGE_NOT_SATISFIABLE = 416, HTTP_CODE_EXPECTATION_FAILED = 417, HTTP_CODE_MISDIRECTED_REQUEST = 421, HTTP_CODE_UNPROCESSABLE_ENTITY = 422, HTTP_CODE_LOCKED = 423, HTTP_CODE_FAILED_DEPENDENCY = 424, HTTP_CODE_UPGRADE_REQUIRED = 426, HTTP_CODE_PRECONDITION_REQUIRED = 428, HTTP_CODE_TOO_MANY_REQUESTS = 429, HTTP_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE = 431, HTTP_CODE_INTERNAL_SERVER_ERROR = 500, HTTP_CODE_NOT_IMPLEMENTED = 501, HTTP_CODE_BAD_GATEWAY = 502, HTTP_CODE_SERVICE_UNAVAILABLE = 503, HTTP_CODE_GATEWAY_TIMEOUT = 504, HTTP_CODE_HTTP_VERSION_NOT_SUPPORTED = 505, HTTP_CODE_VARIANT_ALSO_NEGOTIATES = 506, HTTP_CODE_INSUFFICIENT_STORAGE = 507, HTTP_CODE_LOOP_DETECTED = 508, HTTP_CODE_NOT_EXTENDED = 510, HTTP_CODE_NETWORK_AUTHENTICATION_REQUIRED = 511 } t_http_codes; typedef enum { HTTPC_TE_IDENTITY, HTTPC_TE_CHUNKED } transferEncoding_t; class TransportTraits; typedef std::unique_ptr TransportTraitsPtr; class HTTPClient { public: HTTPClient(); ~HTTPClient(); bool begin(String url); bool begin(String url, const char* CAcert); bool begin(String host, uint16_t port, String uri = "/"); bool begin(String host, uint16_t port, String uri, const char* CAcert); bool begin(String host, uint16_t port, String uri, const char* CAcert, const char* cli_cert, const char* cli_key); void end(void); bool connected(void); void setReuse(bool reuse); /// keep-alive void setUserAgent(const String& userAgent); void setAuthorization(const char * user, const char * password); void setAuthorization(const char * auth); void setTimeout(uint16_t timeout); void useHTTP10(bool usehttp10 = true); /// request handling int GET(); int POST(uint8_t * payload, size_t size); int POST(String payload); int PUT(uint8_t * payload, size_t size); int PUT(String payload); int sendRequest(const char * type, String payload); int sendRequest(const char * type, uint8_t * payload = NULL, size_t size = 0); int sendRequest(const char * type, Stream * stream, size_t size = 0); void addHeader(const String& name, const String& value, bool first = false, bool replace = true); /// Response handling void collectHeaders(const char* headerKeys[], const size_t headerKeysCount); String header(const char* name); // get request header value by name String header(size_t i); // get request header value by number String headerName(size_t i); // get request header name by number int headers(); // get header count bool hasHeader(const char* name); // check if header exists int getSize(void); WiFiClient& getStream(void); WiFiClient* getStreamPtr(void); int writeToStream(Stream* stream); String getString(void); static String errorToString(int error); protected: struct RequestArgument { String key; String value; }; bool beginInternal(String url, const char* expectedProtocol); void clear(); int returnError(int error); bool connect(void); bool sendHeader(const char * type); int handleHeaderResponse(); int writeToStreamDataBlock(Stream * stream, int len); TransportTraitsPtr _transportTraits; std::unique_ptr _tcp; /// request handling String _host; uint16_t _port = 0; bool _reuse = false; uint16_t _tcpTimeout = HTTPCLIENT_DEFAULT_TCP_TIMEOUT; bool _useHTTP10 = false; bool _secure = false; String _uri; String _protocol; String _headers; String _userAgent = "ESP32HTTPClient"; String _base64Authorization; /// Response handling RequestArgument* _currentHeaders = nullptr; size_t _headerKeysCount = 0; int _returnCode = 0; int _size = -1; bool _canReuse = false; transferEncoding_t _transferEncoding = HTTPC_TE_IDENTITY; }; #endif /* HTTPClient_H_ */