From c6a1f1d8c02d6fb62501bf5f4a461e693c035ffc Mon Sep 17 00:00:00 2001
From: Raphael Randschau <nicolai86@me.com>
Date: Sun, 1 Jul 2018 22:12:55 -0700
Subject: [PATCH] add RTCConnection and RTCPeerConnection constructor

---
 rtcpeerconnection.go | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/rtcpeerconnection.go b/rtcpeerconnection.go
index fdab6b69..398dc55d 100644
--- a/rtcpeerconnection.go
+++ b/rtcpeerconnection.go
@@ -53,12 +53,52 @@ func (t TrackType) String() string {
 	}
 }
 
+// RTCCredentialType specifies the type of credentials provided
+type RTCCredentialType string
+
+var (
+	// RTCCredentialTypePassword describes username+pasword based credentials
+	RTCCredentialTypePassword RTCCredentialType = "password"
+	// RTCCredentialTypeToken describes token based credentials
+	RTCCredentialTypeToken RTCCredentialType = "token"
+)
+
+// RTCICEServer describes a single ICE server, as well as required credentials
+type RTCICEServer struct {
+	CredentialType RTCCredentialType
+	URLs           []string
+	Username       string
+	Credential     string
+}
+
+func (c RTCICEServer) isSTUN() bool {
+	for _, url := range c.URLs {
+		if strings.HasPrefix(url, "stun:") {
+			return true
+		}
+	}
+	return false
+}
+
+// RTCConfiguration contains RTCPeerConfiguration options
+type RTCConfiguration struct {
+	ICEServers []RTCICEServer // An array of RTCIceServer objects, each describing one server which may be used by the ICE agent; these are typically STUN and/or TURN servers. If this isn't specified, the ICE agent may choose to use its own ICE servers; otherwise, the connection attempt will be made with no STUN or TURN server available, which limits the connection to local peers.
+}
+
+// New creates a new RTCPeerConfiguration with the provided configuration
+func New(config *RTCConfiguration) (*RTCPeerConnection, error) {
+	return &RTCPeerConnection{
+		config: config,
+	}, nil
+}
+
 // RTCPeerConnection represents a WebRTC connection between itself and a remote peer
 type RTCPeerConnection struct {
 	Ontrack                    func(mediaType TrackType, buffers <-chan *rtp.Packet)
 	LocalDescription           *sdp.SessionDescription
 	OnICEConnectionStateChange func(iceConnectionState ice.ConnectionState)
 
+	config *RTCConfiguration
 	tlscfg *dtls.TLSCfg
 
 	iceUsername string