URLStream Class Reference

Represents the content of a URL as Stream. We use the WiFi.h API. If you run into performance issues, check if the data is provided chunked. In this chase you can check if setting the protocol to "HTTP/1.0" improves the situation. More...

#include <URLStream.h>

Inheritance diagram for URLStream:

Public Member Functions
	URLStream (Client &clientPar, int readBufferSize=DEFAULT_BUFFER_SIZE)
	URLStream (const char *network, const char *password, int readBufferSize=DEFAULT_BUFFER_SIZE)
	URLStream (const URLStream &)=delete
	URLStream (int readBufferSize=DEFAULT_BUFFER_SIZE)
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
void	addRequestHeader (const char *key, const char *value)
	Adds/Updates a request header.
virtual AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
virtual int	available () override
int	availableForWrite () override
	Writes are not supported.
virtual bool	begin ()
virtual bool	begin (const char *urlStr, const char *acceptMime, MethodID action, const char *reqMime, Stream &reqData, int len=-1)
	Execute e.g. http POST request which submits the content as a stream.
virtual bool	begin (const char *urlStr, const char *acceptMime=nullptr, MethodID action=GET, const char *reqMime="", const char *reqData="") override
	Execute http request: by default we use a GET request.
void	clear ()
	Releases the memory from the request and reply.
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
int	contentLength () override
	Provides the reported data size from the http reply.
virtual void	end () override
virtual void	flush () override
const char *	getReplyHeader (const char *key)
	Provides reply header information.
virtual HttpRequest &	httpRequest () override
	provides access to the HttpRequest
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
	operator bool ()
virtual int	peek () override
virtual int	read () override
virtual size_t	readBytes (uint8_t *data, size_t len) override
virtual size_t	readSilence (uint8_t *buffer, size_t length)
	Source to generate silence: just sets the buffer to 0.
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
virtual void	setAudioInfo (AudioInfo newInfo) override
	Defines the input AudioInfo.
void	setAutoCreateLines (bool flag)
	If set to true, new undefined reply parameters will be stored.
void	setCACert (const char *cert) override
	Define the Root PEM Certificate for SSL.
void	setClient (Client &clientPar) override
	(Re-)defines the client
void	setConnectionClose (bool close)
	Sets if the connection should be close automatically.
virtual bool	setMetadataCallback (void(*fn)(MetaDataType info, const char *str, int len))
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
void	setOnConnectCallback (void(*callback)(HttpRequest &request, Url &url, HttpRequestHeader &request_header))
	Callback which allows you to add additional paramters dynamically.
void	setPassword (const char *password) override
	Sets the password that will be used for logging in (when calling begin)
void	setPowerSave (bool ps)
void	setReadBufferSize (int readBufferSize)
	Defines the buffer that is used by individual read() or peek() calls.
void	setSSID (const char *ssid) override
	Sets the ssid that will be used for logging in (when calling begin)
virtual void	setTimeout (int ms)
	Defines the client timeout.
void	setWaitForData (bool flag)
size_t	totalRead () override
	Total amout of data that was consumed so far.
const char *	urlStr () override
	Provides the url as string.
bool	waitForData (int timeout) override
	waits for some data - returns false if the request has failed
virtual size_t	write (const uint8_t *, size_t len) override
virtual size_t	write (uint8_t) override
virtual void	writeSilence (size_t len)
	Writes len bytes of silence (=0).

Protected Member Functions
void	fillBuffer ()
Client &	getClient (bool isSecure)
	Determines the client.
bool	isEOS ()
bool	login ()
virtual int	not_supported (int out, const char *msg="")
void	notifyAudioChange (AudioInfo info)
bool	preProcess (const char *urlStr, const char *acceptMime)
template<typename T >
int	process (MethodID action, Url &url, const char *reqMime, T reqData, int len=-1)
	Process the Http request and handle redirects.
void	refillReadBuffer ()

Protected Attributes
int	_timeout = 10
bool	active = false
Client *	client = nullptr
WiFiClient *	clientInsecure = nullptr
int	clientTimeout = URL_CLIENT_TIMEOUT
unsigned long	handshakeTimeout = URL_HANDSHAKE_TIMEOUT
AudioInfo	info
bool	is_notify_active = true
bool	is_power_save = false
const char *	network = nullptr
Vector< AudioInfoSupport * >	notify_vector
const char *	password = nullptr
Vector< uint8_t >	read_buffer {0}
uint16_t	read_buffer_size = DEFAULT_BUFFER_SIZE
uint16_t	read_pos
uint16_t	read_size
HttpRequest	request
long	size
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
long	total_read
Url	url
Str	url_str
bool	wait_for_data = true

Detailed Description

Represents the content of a URL as Stream. We use the WiFi.h API. If you run into performance issues, check if the data is provided chunked. In this chase you can check if setting the protocol to "HTTP/1.0" improves the situation.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

addNotifyAudioChange()

virtual void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, MP3DecoderMAD, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, MP3DecoderHelix, OggContainerDecoder, Pipeline, and Pipeline::ModifyingStreamAdapter.

addRequestHeader()

void addRequestHeader ( const char *  key, const char *  value  )

inlinevirtual

Adds/Updates a request header.

Implements AbstractURLStream.

audioInfo()

virtual AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in JupyterAudioT< T >, MozziStream, TimerCallbackAudioStream, PureDataStream, AdapterAudioOutputToAudioStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, and InputMerge< T >.

audioInfoOut()

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in PureDataStream, PWMAudioOutput, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, and ResampleStream.

available()

virtual int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

availableForWrite()

int availableForWrite ( )

inlineoverridevirtualinherited

Writes are not supported.

Reimplemented from BaseStream.

Reimplemented in URLStreamESP32.

begin() [1/2]

virtual bool begin ( )

inlinevirtualinherited

Reimplemented in AudioOutputWithCallback, HLSStreamT< URLStream >, SPDIFOutput, VS1053Stream, WM8960Stream, ESPNowStream, TimerCallbackAudioStream, QueueStream< T >, QueueStream< uint8_t >, DynamicMemoryStream, AudioFFTBase, AnalogAudioArduino, AnalogAudioStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, FormatConverterStream, and Pipeline.

begin() [2/2]

virtual bool begin ( const char *  urlStr, const char *  acceptMime = nullptr, MethodID  action = GET, const char *  reqMime = "", const char *  reqData = ""  )

inlineoverridevirtual

Execute http request: by default we use a GET request.

Implements AbstractURLStream.

contentLength()

int contentLength ( )

inlineoverridevirtual

Provides the reported data size from the http reply.

Implements AbstractURLStream.

end()

virtual void end ( )

inlineoverridevirtual

Implements AbstractURLStream.

flush()

virtual void flush ( )

inlineoverridevirtual

Reimplemented from BaseStream.

getReplyHeader()

const char * getReplyHeader ( const char *  header )

inlinevirtual

Provides reply header information.

Implements AbstractURLStream.

httpRequest()

virtual HttpRequest & httpRequest ( )

inlineoverridevirtual

provides access to the HttpRequest

Implements AbstractURLStream.

operator bool()

operator bool ( )

inlinevirtual

Reimplemented from AudioStream.

readBytes()

virtual size_t readBytes ( uint8_t *  data, size_t  len  )

inlineoverridevirtual

Reimplemented from AudioStream.

setAudioInfo()

virtual void setAudioInfo ( AudioInfo  info )

inlineoverridevirtualinherited

Defines the input AudioInfo.

Implements AudioInfoSupport.

Reimplemented in VS1053Stream, WM8960Stream, I2SBitBang, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, VolumeStream, MiniAudioStream, PortAudioStream, I2SCodecStream, MozziStream, SPDIFOutput, AudioLoRa, AnalogAudioStream, I2SStream, MeasuringStream, VolumeMeter, TimerCallbackAudioStream, AudioBLEStream, LoRaStream, AudioFFTBase, AudioKitStream, VBANStream, AnalogAudioArduino, Equalizer3Bands, AdapterAudioOutputToAudioStream, TimedStream, ProgressStream, FormatConverterStream, FadeStream, Pipeline::ModifyingStreamAdapter, PureDataStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, Pipeline, and ResampleStream.

setCACert()

void setCACert ( const char *  cert )

inlineoverridevirtual

Define the Root PEM Certificate for SSL.

Implements AbstractURLStream.

setClient()

void setClient ( Client &  clientPar )

inlineoverridevirtual

(Re-)defines the client

Implements AbstractURLStream.

setConnectionClose()

void setConnectionClose ( bool  close )

inlinevirtual

Sets if the connection should be close automatically.

Implements AbstractURLStream.

setMetadataCallback()

virtual bool setMetadataCallback ( void(*)(MetaDataType info, const char *str, int len)  fn )

inlinevirtualinherited

Reimplemented in ICYStreamT< T >.

setPassword()

void setPassword ( const char *  password )

inlineoverridevirtual

Sets the password that will be used for logging in (when calling begin)

Implements AbstractURLStream.

setPowerSave()

void setPowerSave ( bool  ps )

inlinevirtual

if set to true, it activates the power save mode which comes at the cost of performance! - By default this is deactivated. ESP32 Only!

Implements AbstractURLStream.

setSSID()

void setSSID ( const char *  ssid )

inlineoverridevirtual

Sets the ssid that will be used for logging in (when calling begin)

Implements AbstractURLStream.

totalRead()

size_t totalRead ( )

inlineoverridevirtual

Total amout of data that was consumed so far.

Implements AbstractURLStream.

urlStr()

const char * urlStr ( )

inlineoverridevirtual

Provides the url as string.

Implements AbstractURLStream.

waitForData()

bool waitForData ( int  timeout )

inlineoverridevirtual

waits for some data - returns false if the request has failed

Implements AbstractURLStream.

write() [1/2]

virtual size_t write ( const uint8_t *  , size_t  len  )

inlineoverridevirtual

Reimplemented from AudioStream.

write() [2/2]

virtual size_t write ( uint8_t  )

inlineoverridevirtual

Reimplemented from BaseStream.

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The documentation for this class was generated from the following file:

• src/AudioTools/CoreAudio/AudioHttp/URLStream.h