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/**
* 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_
#define HTTPCLIENT_1_1_COMPATIBLE
#include <memory>
#include <Arduino.h>
#include <WiFiClient.h>
#include <WiFiClientSecure.h>
#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;
#ifdef HTTPCLIENT_1_1_COMPATIBLE
class TransportTraits;
typedef std::unique_ptr<TransportTraits> TransportTraitsPtr;
#endif
class HTTPClient
{
public:
HTTPClient();
~HTTPClient();
/*
* Since both begin() functions take a reference to client as a parameter, you need to
* ensure the client object lives the entire time of the HTTPClient
*/
bool begin(WiFiClient &client, String url);
bool begin(WiFiClient &client, String host, uint16_t port, String uri = "/", bool https = false);
#ifdef HTTPCLIENT_1_1_COMPATIBLE
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);
#endif
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 disconnect();
void clear();
int returnError(int error);
bool connect(void);
bool sendHeader(const char * type);
int handleHeaderResponse();
int writeToStreamDataBlock(Stream * stream, int len);
#ifdef HTTPCLIENT_1_1_COMPATIBLE
TransportTraitsPtr _transportTraits;
std::unique_ptr<WiFiClient> _tcpDeprecated;
#endif
WiFiClient* _client = nullptr;
/// 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_ */