tool/mbed/mbed-sdk/libraries/tests/net/protocols/HTTPClient_HelloWorld/HTTPClient/IHTTPData.h

   1 /* IHTTPData.h */
   2 /* Copyright (C) 2012 mbed.org, MIT License
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
   5  * and associated documentation files (the "Software"), to deal in the Software without restriction,
   6  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
   7  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in all copies or
  11  * substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
  14  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  16  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  17  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  18  */
  19
  20 #ifndef IHTTPDATA_H
  21 #define IHTTPDATA_H
  22
  23 #include <cstring>
  24
  25 using std::size_t;
  26
  27 ///This is a simple interface for HTTP data storage (impl examples are Key/Value Pairs, File, etc...)
  28 class IHTTPDataOut
  29 {
  30 protected:
  31   friend class HTTPClient;
  32
  33   /** Read a piece of data to be transmitted
  34    * @param buf Pointer to the buffer on which to copy the data
  35    * @param len Length of the buffer
  36    * @param pReadLen Pointer to the variable on which the actual copied data length will be stored
  37    */
  38   virtual int read(char* buf, size_t len, size_t* pReadLen) = 0;
  39
  40   /** Get MIME type
  41    * @param type Internet media type from Content-Type header
  42    */
  43   virtual int getDataType(char* type, size_t maxTypeLen) = 0; //Internet media type for Content-Type header
  44
  45   /** Determine whether the HTTP client should chunk the data
  46    *  Used for Transfer-Encoding header
  47    */
  48   virtual bool getIsChunked() = 0;
  49
  50   /** If the data is not chunked, get its size
  51    *  Used for Content-Length header
  52    */
  53   virtual size_t getDataLen() = 0;
  54
  55 };
  56
  57 ///This is a simple interface for HTTP data storage (impl examples are Key/Value Pairs, File, etc...)
  58 class IHTTPDataIn
  59 {
  60 protected:
  61   friend class HTTPClient;
  62
  63   /** Write a piece of data transmitted by the server
  64    * @param buf Pointer to the buffer from which to copy the data
  65    * @param len Length of the buffer
  66    */
  67   virtual int write(const char* buf, size_t len) = 0;
  68
  69   /** Set MIME type
  70    * @param type Internet media type from Content-Type header
  71    */
  72   virtual void setDataType(const char* type) = 0;
  73
  74   /** Determine whether the data is chunked
  75    *  Recovered from Transfer-Encoding header
  76    */
  77   virtual void setIsChunked(bool chunked) = 0;
  78
  79   /** If the data is not chunked, set its size
  80    * From Content-Length header
  81    */
  82   virtual void setDataLen(size_t len) = 0;
  83
  84 };
  85
  86 #endif