In OkHttp we expose a blocking API over a framed protocol. This document explains the code and policy that makes that work.

### Threads

#### Application's calling thread

    // Verify the peer's settings were read and applied.
    assertThat(connection.peerSettings.headerTableSize).isEqualTo(0)
    val writer = connection.writer
    assertThat(writer.hpackWriter.dynamicTableByteCount).isEqualTo(0)
    assertThat(writer.hpackWriter.headerTableSizeSetting).isEqualTo(0)
  }

  @Test fun peerHttp2ClientDisablesPush() {
    val client = false // Peer is client, so we are server.

		return err
	}
	_, _ = c.Stdout.Write([]byte("\n"))
	if err := c.PrintClusterSummary(cf); err != nil {
		return err
	}
	_, _ = c.Stdout.Write([]byte("\n"))
	if err := c.PrintListenerSummary(lf); err != nil {
		return err
	}
	_, _ = c.Stdout.Write([]byte("\n"))
	if err := c.PrintRouteSummary(rf); err != nil {
		return err
	}
	_, _ = c.Stdout.Write([]byte("\n"))

		for j := 0; j < len(bufsizes); j++ {
			nwrite := bufsizes[i]
			bs := bufsizes[j]

			// Write nwrite bytes using buffer size bs.
			// Check that the right amount makes it out
			// and that the data is correct.

			w.Reset()
			buf := NewWriterSize(w, bs)
			context := fmt.Sprintf("nwrite=%d bufsize=%d", nwrite, bs)
			n, e1 := buf.Write(data[0:nwrite])
			if e1 != nil || n != nwrite {

		{"gopher.txt", "Gopher names:\nGeorge\nGeoffrey\nGonzo"},
		{"todo.txt", "Get animal handling licence.\nWrite more examples."},
	}
	for _, file := range files {
		f, err := w.Create(file.Name)
		if err != nil {
			log.Fatal(err)
		}
		_, err = f.Write([]byte(file.Body))
		if err != nil {
			log.Fatal(err)
		}
	}

	// Make sure to check the error on Close.
	err := w.Close()
	if err != nil {

glyphicons-halflings-white.png...

func (c *DeadlineConn) Read(b []byte) (n int, err error) {
	c.setReadDeadline()
	n, err = c.Conn.Read(b)
	return n, err
}

// Write - writes data to the connection.
func (c *DeadlineConn) Write(b []byte) (n int, err error) {
	c.setWriteDeadline()
	n, err = c.Conn.Write(b)
	return n, err
}

// WithReadDeadline sets a new read side net.Conn deadline.

// EncodeMsg implements msgp.Encodable
func (z *CheckPartsHandlerParams) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 4
	// write "id"
	err = en.Append(0x84, 0xa2, 0x69, 0x64)
	if err != nil {
		return
	}
	err = en.WriteString(z.DiskID)
	if err != nil {
		err = msgp.WrapError(err, "DiskID")
		return
	}
	// write "v"
	err = en.Append(0xa1, 0x76)
	if err != nil {
		return
	}

		}
		mid.respMu.Lock()
		resp(mid.closed)
		mid.respMu.Unlock()
	}
}

// wsWriter writes websocket messages.
type wsWriter struct {
	tmp [ws.MaxHeaderSize]byte
}

// writeMessage writes a message to w without allocations.
func (ww *wsWriter) writeMessage(w io.Writer, s ws.State, op ws.OpCode, p []byte) error {
	const fin = true
	var frame ws.Frame
	if s.ClientSide() {

			sr.sp = sr.sp[1:] // Ensure last fragment always remains
		}
	}

	// If the last fragment is a hole, then seek to 1-byte before EOF, and
	// write a single byte to ensure the file is the right size.
	if writeLastByte && err == nil {
		_, err = ws.Write([]byte{0})
		sr.pos++
	}

	n = sr.pos - pos0
	switch {
	case err == io.EOF:
		return n, errMissData // Less data in dense file than sparse file