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Dependencies:   TextLCD mbed

HTTPClient/LPC2368/services/http/client/data/HTTPStream.h@1:57304b082776, 2012-08-31 (annotated)

Committer:
nxpfan
Date:
Fri Aug 31 08:29:07 2012 +0000
Revision:
1:57304b082776
Parent:
0:66c7c9c4f765 
mbed-lib has been updated also

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxpfan 0:66c7c9c4f765 1
nxpfan 0:66c7c9c4f765 2 /*
nxpfan 0:66c7c9c4f765 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
nxpfan 0:66c7c9c4f765 4
nxpfan 0:66c7c9c4f765 5 Permission is hereby granted, free of charge, to any person obtaining a copy
nxpfan 0:66c7c9c4f765 6 of this software and associated documentation files (the "Software"), to deal
nxpfan 0:66c7c9c4f765 7 in the Software without restriction, including without limitation the rights
nxpfan 0:66c7c9c4f765 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
nxpfan 0:66c7c9c4f765 9 copies of the Software, and to permit persons to whom the Software is
nxpfan 0:66c7c9c4f765 10 furnished to do so, subject to the following conditions:
nxpfan 0:66c7c9c4f765 11
nxpfan 0:66c7c9c4f765 12 The above copyright notice and this permission notice shall be included in
nxpfan 0:66c7c9c4f765 13 all copies or substantial portions of the Software.
nxpfan 0:66c7c9c4f765 14
nxpfan 0:66c7c9c4f765 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
nxpfan 0:66c7c9c4f765 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
nxpfan 0:66c7c9c4f765 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
nxpfan 0:66c7c9c4f765 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
nxpfan 0:66c7c9c4f765 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
nxpfan 0:66c7c9c4f765 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
nxpfan 0:66c7c9c4f765 21 THE SOFTWARE.
nxpfan 0:66c7c9c4f765 22 */
nxpfan 0:66c7c9c4f765 23
nxpfan 0:66c7c9c4f765 24 #ifndef HTTP_STREAM_H
nxpfan 0:66c7c9c4f765 25 #define HTTP_STREAM_H
nxpfan 0:66c7c9c4f765 26
nxpfan 0:66c7c9c4f765 27 #include "../HTTPData.h"
nxpfan 0:66c7c9c4f765 28 #include "mbed.h"
nxpfan 0:66c7c9c4f765 29
nxpfan 0:66c7c9c4f765 30 /** \file
nxpfan 0:66c7c9c4f765 31 HTTP Stream data source/sink header file
nxpfan 0:66c7c9c4f765 32 */
nxpfan 0:66c7c9c4f765 33
nxpfan 0:66c7c9c4f765 34 typedef uint8_t byte;
nxpfan 0:66c7c9c4f765 35
nxpfan 0:66c7c9c4f765 36 ///HTTP Client Streaming tool
nxpfan 0:66c7c9c4f765 37 /**
nxpfan 0:66c7c9c4f765 38 This class allows you to stream data from the web using a persisting HTTP connection.
nxpfan 0:66c7c9c4f765 39 To use it properly you must use a non-blocking HTTPClient method.
nxpfan 0:66c7c9c4f765 40 */
nxpfan 0:66c7c9c4f765 41 class HTTPStream : public HTTPData //Streaming buf
nxpfan 0:66c7c9c4f765 42 {
nxpfan 0:66c7c9c4f765 43 public:
nxpfan 0:66c7c9c4f765 44 ///Instantiates the object
nxpfan 0:66c7c9c4f765 45 HTTPStream();
nxpfan 0:66c7c9c4f765 46 virtual ~HTTPStream();
nxpfan 0:66c7c9c4f765 47
nxpfan 0:66c7c9c4f765 48 ///Starts to read into buffer
nxpfan 0:66c7c9c4f765 49 /**
nxpfan 0:66c7c9c4f765 50 Passes a buffer of address @a buf and size @a size to the instance.
nxpfan 0:66c7c9c4f765 51 When it receives data it will be stored in this buffer.
nxpfan 0:66c7c9c4f765 52 When the buffer is full it throttles the client until this function is called again.
nxpfan 0:66c7c9c4f765 53 */
nxpfan 0:66c7c9c4f765 54 void readNext(byte* buf, int size);
nxpfan 0:66c7c9c4f765 55
nxpfan 0:66c7c9c4f765 56 ///Returns whether there is data available to read
nxpfan 0:66c7c9c4f765 57 bool readable();
nxpfan 0:66c7c9c4f765 58
nxpfan 0:66c7c9c4f765 59 ///Returns the actual length of the payload written in the buffer
nxpfan 0:66c7c9c4f765 60 int readLen();
nxpfan 0:66c7c9c4f765 61
nxpfan 0:66c7c9c4f765 62 virtual void clear();
nxpfan 0:66c7c9c4f765 63
nxpfan 0:66c7c9c4f765 64 protected:
nxpfan 0:66c7c9c4f765 65 virtual int read(char* buf, int len);
nxpfan 0:66c7c9c4f765 66 virtual int write(const char* buf, int len);
nxpfan 0:66c7c9c4f765 67
nxpfan 0:66c7c9c4f765 68 virtual string getDataType(); //Internet media type for Content-Type header
nxpfan 0:66c7c9c4f765 69 virtual void setDataType(const string& type); //Internet media type from Content-Type header
nxpfan 0:66c7c9c4f765 70
nxpfan 0:66c7c9c4f765 71 virtual bool getIsChunked(); //For Transfer-Encoding header
nxpfan 0:66c7c9c4f765 72 virtual void setIsChunked(bool chunked); //From Transfer-Encoding header
nxpfan 0:66c7c9c4f765 73
nxpfan 0:66c7c9c4f765 74 virtual int getDataLen(); //For Content-Length header
nxpfan 0:66c7c9c4f765 75 virtual void setDataLen(int len); //From Content-Length header, or if the transfer is chunked, next chunk length
nxpfan 0:66c7c9c4f765 76
nxpfan 0:66c7c9c4f765 77 private:
nxpfan 0:66c7c9c4f765 78 byte* m_buf;
nxpfan 0:66c7c9c4f765 79 int m_size; //Capacity
nxpfan 0:66c7c9c4f765 80 int m_len; //Length
nxpfan 0:66c7c9c4f765 81 };
nxpfan 0:66c7c9c4f765 82
nxpfan 0:66c7c9c4f765 83 #endif