com.squareup.okhttp.internal.framed

Interface FrameWriter

All Superinterfaces:

AutoCloseable, Closeable

public interface FrameWriter
extends Closeable

Writes transport frames for SPDY/3 or HTTP/2.

Method Summary

Modifier and Type	Method and Description
void	ackSettings(Settings peerSettings) Informs the peer that we've applied its latest settings.
void	connectionPreface() HTTP/2 only.
void	data(boolean outFinished, int streamId, okio.Buffer source, int byteCount) source.length may be longer than the max length of the variant's data frame.
void	flush() SPDY/3 only.
void	goAway(int lastGoodStreamId, ErrorCode errorCode, byte[] debugData) Tell the peer to stop creating streams and that we last processed lastGoodStreamId, or zero if no streams were processed.
void	headers(int streamId, List<Header> headerBlock)
int	maxDataLength() The maximum size of bytes that may be sent in a single call to data(boolean, int, okio.Buffer, int).
void	ping(boolean ack, int payload1, int payload2) Send a connection-level ping to the peer.
void	pushPromise(int streamId, int promisedStreamId, List<Header> requestHeaders) HTTP/2 only.
void	rstStream(int streamId, ErrorCode errorCode)
void	settings(Settings okHttpSettings) Write okhttp's settings to the peer.
void	synReply(boolean outFinished, int streamId, List<Header> headerBlock)
void	synStream(boolean outFinished, boolean inFinished, int streamId, int associatedStreamId, List<Header> headerBlock)
void	windowUpdate(int streamId, long windowSizeIncrement) Inform peer that an additional windowSizeIncrement bytes can be sent on streamId, or the connection if streamId is zero.

Methods inherited from interface java.io.Closeable

close

Method Detail

connectionPreface

void connectionPreface()
                throws IOException

HTTP/2 only.

Throws:

IOException

ackSettings

void ackSettings(Settings peerSettings)
          throws IOException

Informs the peer that we've applied its latest settings.

Throws:

IOException

pushPromise

void pushPromise(int streamId,
                 int promisedStreamId,
                 List<Header> requestHeaders)
          throws IOException

HTTP/2 only. Send a push promise header block.

A push promise contains all the headers that pertain to a server-initiated request, and a promisedStreamId to which response frames will be delivered. Push promise frames are sent as a part of the response to streamId. The promisedStreamId has a priority of one greater than streamId.

Parameters:

streamId - client-initiated stream ID. Must be an odd number.

promisedStreamId - server-initiated stream ID. Must be an even number.

requestHeaders - minimally includes :method, :scheme, :authority, and (@code :path}.

Throws:

IOException

flush

void flush()
    throws IOException

SPDY/3 only.

Throws:

IOException

synStream

void synStream(boolean outFinished,
               boolean inFinished,
               int streamId,
               int associatedStreamId,
               List<Header> headerBlock)
        throws IOException

Throws:

IOException

synReply

void synReply(boolean outFinished,
              int streamId,
              List<Header> headerBlock)
       throws IOException

Throws:

IOException

headers

void headers(int streamId,
             List<Header> headerBlock)
      throws IOException

Throws:

IOException

rstStream

void rstStream(int streamId,
               ErrorCode errorCode)
        throws IOException

Throws:

IOException

maxDataLength

int maxDataLength()

The maximum size of bytes that may be sent in a single call to data(boolean, int, okio.Buffer, int).

data

void data(boolean outFinished,
          int streamId,
          okio.Buffer source,
          int byteCount)
   throws IOException

source.length may be longer than the max length of the variant's data frame. Implementations must send multiple frames as necessary.

Parameters:

source - the buffer to draw bytes from. May be null if byteCount is 0.

byteCount - must be between 0 and the minimum of {code source.length} and maxDataLength().

Throws:

IOException

settings

void settings(Settings okHttpSettings)
       throws IOException

Write okhttp's settings to the peer.

Throws:

IOException

ping

void ping(boolean ack,
          int payload1,
          int payload2)
   throws IOException

Send a connection-level ping to the peer. ack indicates this is a reply. Payload parameters are different between SPDY/3 and HTTP/2.

In SPDY/3, only the first payload1 parameter is sent. If the sender is a client, it is an unsigned odd number. Likewise, a server will send an even number.

In HTTP/2, both payload1 and payload2 parameters are sent. The data is opaque binary, and there are no rules on the content.

Throws:

IOException

goAway

void goAway(int lastGoodStreamId,
            ErrorCode errorCode,
            byte[] debugData)
     throws IOException

Tell the peer to stop creating streams and that we last processed lastGoodStreamId, or zero if no streams were processed.

Parameters:

lastGoodStreamId - the last stream ID processed, or zero if no streams were processed.

errorCode - reason for closing the connection.

debugData - only valid for HTTP/2; opaque debug data to send.

Throws:

IOException

windowUpdate

void windowUpdate(int streamId,
                  long windowSizeIncrement)
           throws IOException

Inform peer that an additional windowSizeIncrement bytes can be sent on streamId, or the connection if streamId is zero.

Throws:

IOException