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public class CronetDataSource extends BaseDataSource implements HttpDataSource

java.lang.Object
   ↳ androidx.media3.datasource.BaseDataSource
     ↳ androidx.media3.datasource.cronet.CronetDataSource

DataSource without intermediate buffer based on Cronet API set using UrlRequest.

Note: HTTP request headers will be set using all parameters passed via (in order of decreasing priority) the dataSpec, setRequestProperty and the default parameters used to construct the instance.

Summary

Nested types
public final class CronetDataSource.Factory implements HttpDataSource.Factory

DataSource.Factory for CronetDataSource instances.

Thrown when an error is encountered when trying to open a CronetDataSource.

Constants
static final int

The default connection timeout, in milliseconds.
static final int

The default read timeout, in milliseconds.

Protected fields
@Nullable UrlRequest

Protected constructors
@UnstableApi
CronetDataSource(
    CronetEngine cronetEngine,
    Executor executor,
    int requestPriority,
    int connectTimeoutMs,
    int readTimeoutMs,
    boolean resetTimeoutOnRedirects,
    boolean handleSetCookieRequests,
    @Nullable String userAgent,
    @Nullable HttpDataSource.RequestProperties defaultRequestProperties,
    @Nullable Predicate<String> contentTypePredicate,
    boolean keepPostFor302Redirects,
    int readBufferSize
)

Public methods
void

Clears all request headers that were set by setRequestProperty.
void

Clears the value of a request header.
synchronized void

Closes the source.
int

When the source is open, returns the HTTP response status code associated with the last open call.
Map<String, List<String>>

When the source is open, returns the response headers associated with the last open call.
@Nullable Uri

When the source is open, returns the Uri from which data is being read.
long

Opens the source to read the specified data.
int

Reads up to buffer.remaining() bytes of data and stores them into buffer, starting at buffer.position().
int
@UnstableApi
read(byte[] buffer, int offset, int length)

Reads up to length bytes of data from the input.
void

Sets the value of a request header.

Protected methods
UrlRequest.Builder
@UnstableApi
@SideEffectFree
@RequiresNonNull(value = "this.currentUrlRequestCallback")
buildRequestBuilder(DataSpec dataSpec)

Returns UrlRequest.Builder from dataSpec.
@Nullable UrlRequest

Returns current UrlRequest.
@Nullable UrlResponseInfo

Returns current UrlResponseInfo.

Inherited Constants
From androidx.media3.datasource.HttpDataSource
static final Predicate<String>

A Predicate that rejects content types often used for pay-walls.

Inherited methods
From androidx.media3.datasource.BaseDataSource
final void

Adds a TransferListener to listen to data transfers.
final void
bytesTransferred(int bytesTransferred)

Notifies listeners that bytes were transferred.
final void

Notifies listeners that a transfer ended.
final void

Notifies listeners that data transfer for the specified DataSpec is being initialized.
final void

Notifies listeners that data transfer for the specified DataSpec started.

Constants

DEFAULT_CONNECT_TIMEOUT_MILLIS

@UnstableApi
public static final int DEFAULT_CONNECT_TIMEOUT_MILLIS = 8000

The default connection timeout, in milliseconds.

DEFAULT_READ_TIMEOUT_MILLIS

@UnstableApi
public static final int DEFAULT_READ_TIMEOUT_MILLIS = 8000

The default read timeout, in milliseconds.

Protected fields

currentUrlRequest

protected @Nullable UrlRequest currentUrlRequest

Protected constructors

CronetDataSource

@UnstableApi
protected CronetDataSource(
    CronetEngine cronetEngine,
    Executor executor,
    int requestPriority,
    int connectTimeoutMs,
    int readTimeoutMs,
    boolean resetTimeoutOnRedirects,
    boolean handleSetCookieRequests,
    @Nullable String userAgent,
    @Nullable HttpDataSource.RequestProperties defaultRequestProperties,
    @Nullable Predicate<String> contentTypePredicate,
    boolean keepPostFor302Redirects,
    int readBufferSize
)

Public methods

clearAllRequestProperties

@UnstableApi
public void clearAllRequestProperties()

Clears all request headers that were set by setRequestProperty.

clearRequestProperty

@UnstableApi
public void clearRequestProperty(String name)

Clears the value of a request header. The change will apply to subsequent connections established by the source.

Parameters
String name

The name of the header field.

close

@UnstableApi
synchronized public void close()

Closes the source. This method must be called even if the corresponding call to open threw an IOException.

Throws
java.io.IOException

If an error occurs closing the source.

getResponseCode

@UnstableApi
public int getResponseCode()

When the source is open, returns the HTTP response status code associated with the last open call. Otherwise, returns a negative value.

getResponseHeaders

@UnstableApi
public Map<String, List<String>> getResponseHeaders()

When the source is open, returns the response headers associated with the last open call. Otherwise, returns an empty map.

Key look-up in the returned map is case-insensitive.

getUri

@UnstableApi
public @Nullable Uri getUri()

When the source is open, returns the Uri from which data is being read. The returned Uri will be identical to the one passed open in the DataSpec unless redirection has occurred. If redirection has occurred, the Uri after redirection is returned.

Returns
@Nullable Uri

The Uri from which data is being read, or null if the source is not open.

open

@UnstableApi
public long open(DataSpec dataSpec)

Opens the source to read the specified data. If an IOException is thrown, callers must still call close to ensure that any partial effects of the invocation are cleaned up.

The following edge case behaviors apply:

Parameters
DataSpec dataSpec

Defines the data to be read.
Returns
long

The number of bytes that can be read from the opened source. For unbounded requests (i.e., requests where length equals LENGTH_UNSET) this value is the resolved length of the request, or LENGTH_UNSET if the length is still unresolved. For all other requests, the value returned will be equal to the request's length.
Throws
java.io.IOException

If an error occurs opening the source. DataSourceException can be thrown or used as a cause of the thrown exception to specify the reason of the error.
androidx.media3.datasource.HttpDataSource.HttpDataSourceException

read

@UnstableApi
public int read(ByteBuffer buffer)

Reads up to buffer.remaining() bytes of data and stores them into buffer, starting at buffer.position(). Advances the position of the buffer by the number of bytes read and returns this length.

If there is an error, a HttpDataSourceException is thrown and the contents of buffer should be ignored. If the exception has error code HttpDataSourceException.TYPE_READ, note that Cronet may continue writing into buffer after the method has returned. Thus the caller should not attempt to reuse the buffer.

If buffer.remaining() is zero then 0 is returned. Otherwise, if no data is available because the end of the opened range has been reached, then RESULT_END_OF_INPUT is returned. Otherwise, the call will block until at least one byte of data has been read and the number of bytes read is returned.

Passed buffer must be direct ByteBuffer. If you have a non-direct ByteBuffer, consider the alternative read method with its backed array.

Parameters
ByteBuffer buffer

The ByteBuffer into which the read data should be stored. Must be a direct ByteBuffer.
Returns
int

The number of bytes read, or RESULT_END_OF_INPUT if no data is available because the end of the opened range has been reached.
Throws
androidx.media3.datasource.HttpDataSource.HttpDataSourceException

If an error occurs reading from the source.
java.lang.IllegalArgumentException

If buffer is not a direct ByteBuffer.

read

@UnstableApi
public int read(byte[] buffer, int offset, int length)

Reads up to length bytes of data from the input.

If readLength is zero then 0 is returned. Otherwise, if no data is available because the end of the opened range has been reached, then RESULT_END_OF_INPUT is returned. Otherwise, the call will block until at least one byte of data has been read and the number of bytes read is returned.

Parameters
byte[] buffer

A target array into which data should be written.
int offset

The offset into the target array at which to write.
int length

The maximum number of bytes to read from the input.
Returns
int

The number of bytes read, or RESULT_END_OF_INPUT if the input has ended. This may be less than length because the end of the input (or available data) was reached, the method was interrupted, or the operation was aborted early for another reason.
Throws
java.io.IOException

If an error occurs reading from the input.
androidx.media3.datasource.HttpDataSource.HttpDataSourceException

setRequestProperty

@UnstableApi
public void setRequestProperty(String name, String value)

Sets the value of a request header. The value will be used for subsequent connections established by the source.

Note: If the same header is set as a default parameter in the Factory, then the header value set with this method should be preferred when connecting with the data source. See open.

Parameters
String name

The name of the header field.
String value

The value of the field.

Protected methods

buildRequestBuilder

@UnstableApi
@SideEffectFree
@RequiresNonNull(value = "this.currentUrlRequestCallback")
protected UrlRequest.Builder buildRequestBuilder(DataSpec dataSpec)

Returns UrlRequest.Builder from dataSpec. Would not work if data source is not opened.

Throws
java.io.IOException

getCurrentUrlRequest

@UnstableApi
protected @Nullable UrlRequest getCurrentUrlRequest()

Returns current UrlRequest. May be null if the data source is not opened.

getCurrentUrlResponseInfo

@UnstableApi
protected @Nullable UrlResponseInfo getCurrentUrlResponseInfo()

Returns current UrlResponseInfo. May be null if the data source is not opened.
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