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conn.go
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conn.go
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// Package conn contains a RTSP connection implementation.
package conn
import (
"bufio"
"io"
"github.com/bass3m/gortsplib/pkg/base"
)
const (
readBufferSize = 4096
)
// Conn is a RTSP connection.
type Conn struct {
w io.Writer
br *bufio.Reader
// reuse interleaved frames. they should never be passed to secondary routines
fr base.InterleavedFrame
}
// NewConn allocates a Conn.
func NewConn(rw io.ReadWriter) *Conn {
return &Conn{
w: rw,
br: bufio.NewReaderSize(rw, readBufferSize),
}
}
// Read reads a Request, a Response or an Interleaved frame.
func (c *Conn) Read() (interface{}, error) {
byts, err := c.br.Peek(2)
if err != nil {
return nil, err
}
if byts[0] == base.InterleavedFrameMagicByte {
return c.ReadInterleavedFrame()
}
if byts[0] == 'R' && byts[1] == 'T' {
return c.ReadResponse()
}
return c.ReadRequest()
}
// ReadRequest reads a Request.
func (c *Conn) ReadRequest() (*base.Request, error) {
var req base.Request
err := req.Unmarshal(c.br)
return &req, err
}
// ReadResponse reads a Response.
func (c *Conn) ReadResponse() (*base.Response, error) {
var res base.Response
err := res.Unmarshal(c.br)
return &res, err
}
// ReadInterleavedFrame reads a InterleavedFrame.
func (c *Conn) ReadInterleavedFrame() (*base.InterleavedFrame, error) {
err := c.fr.Unmarshal(c.br)
return &c.fr, err
}
// WriteRequest writes a request.
func (c *Conn) WriteRequest(req *base.Request) error {
buf, _ := req.Marshal()
_, err := c.w.Write(buf)
return err
}
// WriteResponse writes a response.
func (c *Conn) WriteResponse(res *base.Response) error {
buf, _ := res.Marshal()
_, err := c.w.Write(buf)
return err
}
// WriteInterleavedFrame writes an interleaved frame.
func (c *Conn) WriteInterleavedFrame(fr *base.InterleavedFrame, buf []byte) error {
n, _ := fr.MarshalTo(buf)
_, err := c.w.Write(buf[:n])
return err
}