HTTPInputStream.h

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#ifndef HTTP_INPUT_STREAM_H
#define HTTP_INPUT_STREAM_H

#include <string>
#include "InputStream.h"

enum tHTTPResponse
{
    kHTTPSuccess,
    kHTTPRedirect,
    kHTTPUnknown
};

//!@ingroup io
//!handles downloading HTTP URLS
class HTTPInputStream : public InputStream {
public:
    HTTPInputStream(const std::string & url);
    virtual ~HTTPInputStream();

    virtual char Peek();
    virtual char Read();
    virtual void Close();

    virtual bool IsOpen() const;
    virtual bool IsDone() const;
    virtual std::string GetLocation() const
    {
        return location;
    }

private:
    void Init();
    void ParseURL(const std::string & url);
    void OpenConnection();
    void SendRequest();
    tHTTPResponse ParseHTTPStatusLine(std::string & reasonPhrase);
    void ParseHTTPHeaders();
    void ParseContentLength(const std::string & line);
    void ParseLocation(const std::string & line);
    void ReadHeaderLine(std::string & line);
    void ReadByte();
    bool IsSuccessfulResponse(int statusCode);
    bool IsRedirectResponse(int statusCode);
    void DumpResponse();

    std::string host;
    int port;
    std::string path;
    int sockfd;
    int contentLength;
    std::string location;
    int numRead;
    bool done;
    char nextByte;
};


#endif