install go2rtc on bob

installs_on_host/go2rtc/pkg/tcp/dial.go

@@ -0,0 +1,64 @@
+package tcp
+
+import (
+	"crypto/tls"
+	"errors"
+	"net"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// Dial - for RTSP(S|X) and RTMP(S|X)
+func Dial(u *url.URL, timeout time.Duration) (net.Conn, error) {
+	var address string
+	var hostname string // without port
+	if i := strings.IndexByte(u.Host, ':'); i > 0 {
+		address = u.Host
+		hostname = u.Host[:i]
+	} else {
+		switch u.Scheme {
+		case "rtsp", "rtsps", "rtspx":
+			address = u.Host + ":554"
+		case "rtmp":
+			address = u.Host + ":1935"
+		case "rtmps", "rtmpx":
+			address = u.Host + ":443"
+		}
+		hostname = u.Host
+	}
+
+	var secure *tls.Config
+
+	switch u.Scheme {
+	case "rtsp", "rtmp":
+	case "rtsps", "rtspx", "rtmps", "rtmpx":
+		if u.Scheme[4] == 'x' || IsIP(hostname) {
+			secure = &tls.Config{InsecureSkipVerify: true}
+		} else {
+			secure = &tls.Config{ServerName: hostname}
+		}
+	default:
+		return nil, errors.New("unsupported scheme: " + u.Scheme)
+	}
+
+	conn, err := net.DialTimeout("tcp", address, timeout)
+	if err != nil {
+		return nil, err
+	}
+
+	if secure == nil {
+		return conn, nil
+	}
+
+	tlsConn := tls.Client(conn, secure)
+	if err = tlsConn.Handshake(); err != nil {
+		return nil, err
+	}
+
+	if u.Scheme[4] == 'x' {
+		u.Scheme = u.Scheme[:4] + "s"
+	}
+
+	return tlsConn, nil
+}