我在 Xamarin.forms 项目中使用 Linphone SDK 进行 sip 调用。我可以使用以下代码建立连接:
var authInfo = Factory.Instance.CreateAuthInfo(username.Text,
null, password.Text, null, null,domain.Text);
LinphoneCore.AddAuthInfo(authInfo);
String proxyAddress ="sip:"+username.Text+"@192.168.1.180:5160";
var identity = Factory.Instance.CreateAddress(proxyAddress);
var proxyConfig = LinphoneCore.CreateProxyConfig();
identity.Username = username.Text;
identity.Domain = domain.Text;
identity.Transport = TransportType.Udp;
proxyConfig.Edit();
proxyConfig.IdentityAddress = identity;
proxyConfig.ServerAddr = domain.Text + ":5160;transport=udp";
proxyConfig.Route = domain.Text;
proxyConfig.RegisterEnabled = true;
proxyConfig.Done();
LinphoneCore.AddProxyConfig(proxyConfig);
LinphoneCore.DefaultProxyConfig = proxyConfig;
LinphoneCore.RefreshRegisters();
成功连接后,我正在使用代码放置代码。
if (LinphoneCore.CallsNb == 0)
{
string phoneCall = "sip:"+address.Text+ "@192.168.1.180:5160";
var addr = LinphoneCore.InterpretUrl(phoneCall);
LinphoneCore.InviteAddress(addr);
}
else
{
Call call = LinphoneCore.CurrentCall;
if (call.State == CallState.IncomingReceived)
{
LinphoneCore.AcceptCall(call);
}
else
{
LinphoneCore.TerminateAllCalls();
}
}
监听调用状态改变事件的监听器如下:
private void OnCall(Core lc, Call lcall, CallState state, stringmessage)
{
call_status.Text = "Call state changed: " + state;
if (lc.CallsNb > 0)
{
if (state == CallState.IncomingReceived)
{
call.Text = "Answer Call (" + lcall.RemoteAddressAsString + ")";
}
else
{
call.Text = "Terminate Call";
}
if (lcall.CurrentParams.VideoEnabled) {
video.Text = "Stop Video";
} else {
video.Text = "Start Video";
}
}
else
{
call.Text = "Start Call";
call_stats.Text = "";
}
}
呼叫状态为“内部服务器错误”。我可以在我的代码中使用 Linphone 或 X-lite Soft Phone 接听电话,但我无法拨打电话。我不知道这个问题是与服务器有关还是与我的代码有关。请建议。