install go2rtc on bob

installs_on_host/go2rtc/pkg/tcp/textproto.go

@@ -0,0 +1,150 @@
+package tcp
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"net/textproto"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+const EndLine = "\r\n"
+
+// Response like http.Response, but with any proto
+type Response struct {
+	Status     string
+	StatusCode int
+	Proto      string
+	Header     textproto.MIMEHeader
+	Body       []byte
+	Request    *Request
+}
+
+func (r Response) String() string {
+	s := r.Proto + " " + r.Status + EndLine
+	for k, v := range r.Header {
+		s += k + ": " + v[0] + EndLine
+	}
+	s += EndLine
+	if r.Body != nil {
+		s += string(r.Body)
+	}
+	return s
+}
+
+func (r *Response) Write(w io.Writer) (err error) {
+	_, err = w.Write([]byte(r.String()))
+	return
+}
+
+func ReadResponse(r *bufio.Reader) (*Response, error) {
+	tp := textproto.NewReader(r)
+
+	line, err := tp.ReadLine()
+	if err != nil {
+		return nil, err
+	}
+	if line == "" {
+		return nil, errors.New("empty response on RTSP request")
+	}
+
+	ss := strings.SplitN(line, " ", 3)
+	if len(ss) != 3 {
+		return nil, fmt.Errorf("malformed response: %s", line)
+	}
+
+	res := &Response{
+		Status: ss[1] + " " + ss[2],
+		Proto:  ss[0],
+	}
+
+	res.StatusCode, err = strconv.Atoi(ss[1])
+	if err != nil {
+		return nil, err
+	}
+
+	res.Header, err = tp.ReadMIMEHeader()
+	if err != nil {
+		return nil, err
+	}
+
+	if val := res.Header.Get("Content-Length"); val != "" {
+		var i int
+		i, err = strconv.Atoi(val)
+		res.Body = make([]byte, i)
+		if _, err = io.ReadAtLeast(r, res.Body, i); err != nil {
+			return nil, err
+		}
+	}
+
+	return res, nil
+}
+
+// Request like http.Request, but with any proto
+type Request struct {
+	Method string
+	URL    *url.URL
+	Proto  string
+	Header textproto.MIMEHeader
+	Body   []byte
+}
+
+func (r *Request) String() string {
+	s := r.Method + " " + r.URL.String() + " " + r.Proto + EndLine
+	for k, v := range r.Header {
+		s += k + ": " + v[0] + EndLine
+	}
+	s += EndLine
+	if r.Body != nil {
+		s += string(r.Body)
+	}
+	return s
+}
+
+func (r *Request) Write(w io.Writer) (err error) {
+	_, err = w.Write([]byte(r.String()))
+	return
+}
+
+func ReadRequest(r *bufio.Reader) (*Request, error) {
+	tp := textproto.NewReader(r)
+
+	line, err := tp.ReadLine()
+	if err != nil {
+		return nil, err
+	}
+
+	ss := strings.SplitN(line, " ", 3)
+	if len(ss) != 3 {
+		return nil, fmt.Errorf("wrong request: %s", line)
+	}
+
+	req := &Request{
+		Method: ss[0],
+		Proto:  ss[2],
+	}
+
+	req.URL, err = url.Parse(ss[1])
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header, err = tp.ReadMIMEHeader()
+	if err != nil {
+		return nil, err
+	}
+
+	if val := req.Header.Get("Content-Length"); val != "" {
+		var i int
+		i, err = strconv.Atoi(val)
+		req.Body = make([]byte, i)
+		if _, err = io.ReadAtLeast(r, req.Body, i); err != nil {
+			return nil, err
+		}
+	}
+
+	return req, nil
+}