Refactoring for RTMP source

pkg/rtmp/producer.go

@@ -0,0 +1,34 @@
+package rtmp
+
+import (
+	"net"
+	"net/url"
+	"strings"
+
+	"github.com/AlexxIT/go2rtc/pkg/core"
+	"github.com/AlexxIT/go2rtc/pkg/flv"
+)
+
+func Dial(rawURL string) (core.Producer, error) {
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		return nil, err
+	}
+
+	host := u.Host
+	if strings.IndexByte(host, ':') < 0 {
+		host += ":1935"
+	}
+
+	conn, err := net.DialTimeout("tcp", host, core.ConnDialTimeout)
+	if err != nil {
+		return nil, err
+	}
+
+	rd, err := NewReader(u, conn)
+	if err != nil {
+		return nil, err
+	}
+
+	return flv.Open(rd)
+}