David Smart / HTTPClient Featured

Fixed custom headers and Basic authorization, added support for redirection, functional file download interface can be used for SW updates and more.

Dependents:   Sample_HTTPClient Sample_HTTPClient LWM2M_NanoService_Ethernet LWM2M_NanoService_Ethernet ... more

Fork of HTTPClient by Vincent Wochnik

More recent changes - added iCal processing.

Derivative of a derivative, however this one works when it comes to supplying Basic authorization to access a protected resource. Some additional changes to the debug interface to clean it up for consistency with many other components I have.

HTTPClient.h@30:1df62fedb13b, 2014-07-05 (annotated)

Committer:
WiredHome
Date:
Sat Jul 05 22:26:07 2014 +0000
Revision:
30:1df62fedb13b
Parent:
24:eee214e3e806
Child:
32:7b9919d59194
Modified the return code so OK is the only value zero return.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 0:2ccb9960a044 1 /* HTTPClient.h */
donatien 10:e1351de84c16 2 /* Copyright (C) 2012 mbed.org, MIT License
donatien 10:e1351de84c16 3 *
donatien 10:e1351de84c16 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
donatien 10:e1351de84c16 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
donatien 10:e1351de84c16 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
donatien 10:e1351de84c16 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
donatien 10:e1351de84c16 8 * furnished to do so, subject to the following conditions:
donatien 10:e1351de84c16 9 *
donatien 10:e1351de84c16 10 * The above copyright notice and this permission notice shall be included in all copies or
donatien 10:e1351de84c16 11 * substantial portions of the Software.
donatien 10:e1351de84c16 12 *
donatien 10:e1351de84c16 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
donatien 10:e1351de84c16 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
donatien 10:e1351de84c16 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
donatien 10:e1351de84c16 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
donatien 10:e1351de84c16 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
donatien 10:e1351de84c16 18 */
donatien 0:2ccb9960a044 19
donatien 0:2ccb9960a044 20 /** \file
donatien 0:2ccb9960a044 21 HTTP Client header file
donatien 0:2ccb9960a044 22 */
donatien 0:2ccb9960a044 23
donatien 0:2ccb9960a044 24 #ifndef HTTP_CLIENT_H
donatien 0:2ccb9960a044 25 #define HTTP_CLIENT_H
donatien 0:2ccb9960a044 26
donatien 11:390362de8c3f 27 #include "TCPSocketConnection.h"
donatien 0:2ccb9960a044 28
donatien 12:89d09a6db00a 29 #define HTTP_CLIENT_DEFAULT_TIMEOUT 15000
donatien 0:2ccb9960a044 30
donatien 0:2ccb9960a044 31 class HTTPData;
donatien 0:2ccb9960a044 32
donatien 0:2ccb9960a044 33 #include "IHTTPData.h"
donatien 0:2ccb9960a044 34 #include "mbed.h"
donatien 0:2ccb9960a044 35
donatien 0:2ccb9960a044 36 ///HTTP client results
WiredHome 20:4ea5255c1b04 37 enum HTTPResult {
WiredHome 30:1df62fedb13b 38 HTTP_OK = 0, ///<Success
WiredHome 30:1df62fedb13b 39 HTTP_PROCESSING, ///<Processing
WiredHome 30:1df62fedb13b 40 HTTP_PARSE, ///<url Parse error
WiredHome 30:1df62fedb13b 41 HTTP_DNS, ///<Could not resolve name
WiredHome 30:1df62fedb13b 42 HTTP_PRTCL, ///<Protocol error
WiredHome 30:1df62fedb13b 43 HTTP_NOTFOUND, ///<HTTP 404 Error
WiredHome 30:1df62fedb13b 44 HTTP_REFUSED, ///<HTTP 403 Error
WiredHome 30:1df62fedb13b 45 HTTP_ERROR, ///<HTTP xxx error
WiredHome 30:1df62fedb13b 46 HTTP_TIMEOUT, ///<Connection timeout
WiredHome 30:1df62fedb13b 47 HTTP_CONN, ///<Connection error
WiredHome 30:1df62fedb13b 48 HTTP_CLOSED, ///<Connection was closed by remote host
donatien 0:2ccb9960a044 49 };
donatien 0:2ccb9960a044 50
donatien 0:2ccb9960a044 51 /**A simple HTTP Client
donatien 0:2ccb9960a044 52 The HTTPClient is composed of:
donatien 0:2ccb9960a044 53 - The actual client (HTTPClient)
donatien 0:2ccb9960a044 54 - Classes that act as a data repository, each of which deriving from the HTTPData class (HTTPText for short text content, HTTPFile for file I/O, HTTPMap for key/value pairs, and HTTPStream for streaming purposes)
donatien 0:2ccb9960a044 55 */
donatien 0:2ccb9960a044 56 class HTTPClient
donatien 0:2ccb9960a044 57 {
donatien 0:2ccb9960a044 58 public:
WiredHome 20:4ea5255c1b04 59 ///Instantiate the HTTP client
WiredHome 20:4ea5255c1b04 60 HTTPClient();
WiredHome 20:4ea5255c1b04 61 ~HTTPClient();
WiredHome 20:4ea5255c1b04 62
WiredHome 20:4ea5255c1b04 63 /**
WiredHome 20:4ea5255c1b04 64 Provides a basic authentification feature (Base64 encoded username and password)
WiredHome 20:4ea5255c1b04 65 Pass two NULL pointers to switch back to no authentication
WiredHome 20:4ea5255c1b04 66 @param user username to use for authentication, must remain valid durlng the whole HTTP session
WiredHome 20:4ea5255c1b04 67 @param user password to use for authentication, must remain valid durlng the whole HTTP session
WiredHome 20:4ea5255c1b04 68 */
WiredHome 20:4ea5255c1b04 69 void basicAuth(const char* user, const char* password); //Basic Authentification
WiredHome 20:4ea5255c1b04 70
WiredHome 20:4ea5255c1b04 71 /**
WiredHome 20:4ea5255c1b04 72 Set custom headers for request.
WiredHome 20:4ea5255c1b04 73
WiredHome 20:4ea5255c1b04 74 Pass NULL, 0 to turn off custom headers.
WiredHome 20:4ea5255c1b04 75
WiredHome 20:4ea5255c1b04 76 @code
WiredHome 20:4ea5255c1b04 77 const char * hdrs[] =
WiredHome 20:4ea5255c1b04 78 {
WiredHome 20:4ea5255c1b04 79 "Connection", "keep-alive",
WiredHome 20:4ea5255c1b04 80 "Accept", "text/html",
WiredHome 20:4ea5255c1b04 81 "User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64)",
WiredHome 20:4ea5255c1b04 82 "Accept-Encoding", "gzip,deflate,sdch",
WiredHome 20:4ea5255c1b04 83 "Accept-Language", "en-US,en;q=0.8",
WiredHome 20:4ea5255c1b04 84 };
WiredHome 20:4ea5255c1b04 85
WiredHome 20:4ea5255c1b04 86 http.basicAuth("username", "password");
WiredHome 20:4ea5255c1b04 87 http.customHeaders(hdrs, 5);
WiredHome 20:4ea5255c1b04 88 @endcode
WiredHome 20:4ea5255c1b04 89
WiredHome 20:4ea5255c1b04 90 @param headers an array (size multiple of two) key-value pairs, must remain valid during the whole HTTP session
WiredHome 20:4ea5255c1b04 91 @param pairs number of key-value pairs
WiredHome 20:4ea5255c1b04 92 */
WiredHome 20:4ea5255c1b04 93 void customHeaders(const char** headers, size_t pairs);
WiredHome 20:4ea5255c1b04 94
WiredHome 20:4ea5255c1b04 95 //High Level setup functions
WiredHome 20:4ea5255c1b04 96 /** Execute a GET request on the URL
WiredHome 20:4ea5255c1b04 97 Blocks until completion
WiredHome 20:4ea5255c1b04 98 @param url : url on which to execute the request
WiredHome 20:4ea5255c1b04 99 @param pDataIn : pointer to an IHTTPDataIn instance that will collect the data returned by the request, can be NULL
WiredHome 20:4ea5255c1b04 100 @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
WiredHome 20:4ea5255c1b04 101 @return 0 on success, HTTP error (<0) on failure
WiredHome 20:4ea5255c1b04 102 */
WiredHome 20:4ea5255c1b04 103 HTTPResult get(const char* url, IHTTPDataIn* pDataIn, int timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
WiredHome 20:4ea5255c1b04 104
WiredHome 20:4ea5255c1b04 105 /** Execute a GET request on the URL
WiredHome 20:4ea5255c1b04 106 Blocks until completion
WiredHome 20:4ea5255c1b04 107 This is a helper to directly get a piece of text from a HTTP result
WiredHome 20:4ea5255c1b04 108 @param url : url on which to execute the request
WiredHome 20:4ea5255c1b04 109 @param result : pointer to a char array in which the result will be stored
WiredHome 20:4ea5255c1b04 110 @param maxResultLen : length of the char array (including space for the NULL-terminating char)
WiredHome 20:4ea5255c1b04 111 @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
WiredHome 20:4ea5255c1b04 112 @return 0 on success, HTTP error (<0) on failure
WiredHome 20:4ea5255c1b04 113 */
WiredHome 20:4ea5255c1b04 114 HTTPResult get(const char* url, char* result, size_t maxResultLen, int timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
donatien 0:2ccb9960a044 115
WiredHome 20:4ea5255c1b04 116 /** Execute a POST request on the URL
WiredHome 20:4ea5255c1b04 117 Blocks until completion
WiredHome 20:4ea5255c1b04 118 @param url : url on which to execute the request
WiredHome 20:4ea5255c1b04 119 @param dataOut : a IHTTPDataOut instance that contains the data that will be posted
WiredHome 20:4ea5255c1b04 120 @param pDataIn : pointer to an IHTTPDataIn instance that will collect the data returned by the request, can be NULL
WiredHome 20:4ea5255c1b04 121 @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
WiredHome 20:4ea5255c1b04 122 @return 0 on success, HTTP error (<0) on failure
WiredHome 20:4ea5255c1b04 123 */
WiredHome 20:4ea5255c1b04 124 HTTPResult post(const char* url, const IHTTPDataOut& dataOut, IHTTPDataIn* pDataIn, int timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
WiredHome 20:4ea5255c1b04 125
WiredHome 20:4ea5255c1b04 126 /** Execute a PUT request on the URL
WiredHome 20:4ea5255c1b04 127 Blocks until completion
WiredHome 20:4ea5255c1b04 128 @param url : url on which to execute the request
WiredHome 20:4ea5255c1b04 129 @param dataOut : a IHTTPDataOut instance that contains the data that will be put
WiredHome 20:4ea5255c1b04 130 @param pDataIn : pointer to an IHTTPDataIn instance that will collect the data returned by the request, can be NULL
WiredHome 20:4ea5255c1b04 131 @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
WiredHome 20:4ea5255c1b04 132 @return 0 on success, HTTP error (<0) on failure
WiredHome 20:4ea5255c1b04 133 */
WiredHome 20:4ea5255c1b04 134 HTTPResult put(const char* url, const IHTTPDataOut& dataOut, IHTTPDataIn* pDataIn, int timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
WiredHome 20:4ea5255c1b04 135
WiredHome 20:4ea5255c1b04 136 /** Execute a DELETE request on the URL
WiredHome 20:4ea5255c1b04 137 Blocks until completion
WiredHome 20:4ea5255c1b04 138 @param url : url on which to execute the request
WiredHome 20:4ea5255c1b04 139 @param pDataIn : pointer to an IHTTPDataIn instance that will collect the data returned by the request, can be NULL
WiredHome 20:4ea5255c1b04 140 @param timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
WiredHome 20:4ea5255c1b04 141 @return 0 on success, HTTP error (<0) on failure
WiredHome 20:4ea5255c1b04 142 */
WiredHome 20:4ea5255c1b04 143 HTTPResult del(const char* url, IHTTPDataIn* pDataIn, int timeout = HTTP_CLIENT_DEFAULT_TIMEOUT); //Blocking
WiredHome 20:4ea5255c1b04 144
WiredHome 20:4ea5255c1b04 145 /** Get last request's HTTP response code
WiredHome 20:4ea5255c1b04 146 @return The HTTP response code of the last request
WiredHome 20:4ea5255c1b04 147 */
WiredHome 20:4ea5255c1b04 148 int getHTTPResponseCode();
WiredHome 20:4ea5255c1b04 149
WiredHome 24:eee214e3e806 150 /** Set the maximum number of automated redirections
WiredHome 24:eee214e3e806 151 @param i is the number of redirections. Values < 1 are
WiredHome 24:eee214e3e806 152 set to 1.
WiredHome 24:eee214e3e806 153 */
WiredHome 24:eee214e3e806 154 void setMaxRedirections(int i = 1);
WiredHome 24:eee214e3e806 155
WiredHome 24:eee214e3e806 156 /** get the redirect location url
WiredHome 24:eee214e3e806 157 @returns const char pointer to the url.
WiredHome 24:eee214e3e806 158 */
WiredHome 24:eee214e3e806 159 const char * getLocation() {
WiredHome 24:eee214e3e806 160 return m_location;
WiredHome 24:eee214e3e806 161 }
WiredHome 24:eee214e3e806 162
donatien 0:2ccb9960a044 163 private:
WiredHome 20:4ea5255c1b04 164 enum HTTP_METH {
WiredHome 20:4ea5255c1b04 165 HTTP_GET,
WiredHome 20:4ea5255c1b04 166 HTTP_POST,
WiredHome 20:4ea5255c1b04 167 HTTP_PUT,
WiredHome 20:4ea5255c1b04 168 HTTP_DELETE,
WiredHome 20:4ea5255c1b04 169 HTTP_HEAD
WiredHome 20:4ea5255c1b04 170 };
donatien 0:2ccb9960a044 171
WiredHome 20:4ea5255c1b04 172 HTTPResult connect(const char* url, HTTP_METH method, IHTTPDataOut* pDataOut, IHTTPDataIn* pDataIn, int timeout); //Execute request
WiredHome 20:4ea5255c1b04 173 HTTPResult recv(char* buf, size_t minLen, size_t maxLen, size_t* pReadLen); //0 on success, err code on failure
WiredHome 20:4ea5255c1b04 174 HTTPResult send(char* buf, size_t len = 0); //0 on success, err code on failure
WiredHome 20:4ea5255c1b04 175 HTTPResult parseURL(const char* url, char* scheme, size_t maxSchemeLen, char* host, size_t maxHostLen, uint16_t* port, char* path, size_t maxPathLen); //Parse URL
WiredHome 20:4ea5255c1b04 176 void createauth (const char *user, const char *pwd, char *buf, int len);
WiredHome 20:4ea5255c1b04 177 int base64enc(const char *input, unsigned int length, char *output, int len);
donatien 0:2ccb9960a044 178
WiredHome 20:4ea5255c1b04 179 //Parameters
WiredHome 20:4ea5255c1b04 180 TCPSocketConnection m_sock;
WiredHome 20:4ea5255c1b04 181
WiredHome 20:4ea5255c1b04 182 int m_timeout;
donatien 0:2ccb9960a044 183
WiredHome 21:d33f7e1ce811 184 char* m_basicAuthUser;
WiredHome 21:d33f7e1ce811 185 char* m_basicAuthPassword;
WiredHome 20:4ea5255c1b04 186 const char** m_customHeaders;
WiredHome 20:4ea5255c1b04 187 size_t m_nCustomHeaders;
WiredHome 20:4ea5255c1b04 188 int m_httpResponseCode;
WiredHome 24:eee214e3e806 189 int m_maxredirections;
WiredHome 24:eee214e3e806 190 char * m_location;
donatien 0:2ccb9960a044 191
donatien 0:2ccb9960a044 192 };
donatien 0:2ccb9960a044 193
donatien 0:2ccb9960a044 194 //Including data containers here for more convenience
donatien 0:2ccb9960a044 195 #include "data/HTTPText.h"
donatien 0:2ccb9960a044 196 #include "data/HTTPMap.h"
WiredHome 23:517fec8b8b99 197 #include "data/HTTPFile.h"
donatien 0:2ccb9960a044 198
donatien 0:2ccb9960a044 199 #endif