Copy of NetServicesMin with the HTTP Client library. Includes modification for HTTP servers which send the HTTP status line in its own packet.
Diff: services/http/client/data/HTTPStream.h
- Revision:
- 0:18dd877d2c77
diff -r 000000000000 -r 18dd877d2c77 services/http/client/data/HTTPStream.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/services/http/client/data/HTTPStream.h Thu May 26 10:02:40 2011 +0000 @@ -0,0 +1,83 @@ + +/* +Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#ifndef HTTP_STREAM_H +#define HTTP_STREAM_H + +#include "../HTTPData.h" +#include "mbed.h" + +/** \file +HTTP Stream data source/sink header file +*/ + +typedef uint8_t byte; + +///HTTP Client Streaming tool +/** +This class allows you to stream data from the web using a persisting HTTP connection. +To use it properly you must use a non-blocking HTTPClient method. +*/ +class HTTPStream : public HTTPData //Streaming buf +{ +public: + ///Instantiates the object + HTTPStream(); + virtual ~HTTPStream(); + + ///Starts to read into buffer + /** + Passes a buffer of address @a buf and size @a size to the instance. + When it receives data it will be stored in this buffer. + When the buffer is full it throttles the client until this function is called again. + */ + void readNext(byte* buf, int size); + + ///Returns whether there is data available to read + bool readable(); + + ///Returns the actual length of the payload written in the buffer + int readLen(); + + virtual void clear(); + +protected: + virtual int read(char* buf, int len); + virtual int write(const char* buf, int len); + + virtual string getDataType(); //Internet media type for Content-Type header + virtual void setDataType(const string& type); //Internet media type from Content-Type header + + virtual bool getIsChunked(); //For Transfer-Encoding header + virtual void setIsChunked(bool chunked); //From Transfer-Encoding header + + virtual int getDataLen(); //For Content-Length header + virtual void setDataLen(int len); //From Content-Length header, or if the transfer is chunked, next chunk length + +private: + byte* m_buf; + int m_size; //Capacity + int m_len; //Length +}; + +#endif