/// <summary>
/// Notify application on incoming call.
/// </summary>
///<param name="sender">The current sender.</param>
/// <param name="e">The event parameter.</param>
private void _voipManager_OnIncomingCall(object sender, OnIncomingCallParam e)
{
// Is valid call.
if (e.CallId >= 0)
{
// Create a new call.
Call call = _voipManager.CreateCall(e.CallId);
Param.CallParam callInfo = new Param.CallParam(call, _voipManager.MediaManager, _recordFilename);
// Create the call settings.
CallSetting setting = new CallSetting(true);
CallOpParam parm = new CallOpParam(true);
setting.AudioCount = 1;
parm.Setting = setting;
// Continue ringing.
parm.Code = StatusCode.SC_RINGING;
call.Answer(parm);
// Send a notification to the call.
Param.OnIncomingCallParam param = new Param.OnIncomingCallParam();
param.CallID = e.CallId;
param.Info = e.RxData.Info;
param.SrcAddress = e.RxData.SrcAddress;
param.WholeMsg = e.RxData.WholeMsg;
param.Call = callInfo;
param.Contact = FindContact(param);
// Call the event handler.
OnIncomingCall?.Invoke(this, param);
}
}
/// <summary>
/// Find the contact.
/// </summary>
/// <param name="param">The whole message.</param>
/// <returns>The contact; else null.</returns>
private Net.Sip.Contact FindContact(Param.OnIncomingCallParam param)
{
string from = string.Empty;
string contact = string.Empty;
Net.Sip.Contact uriContact = null;
// Get the whole message.
string[] headers = (String.IsNullOrEmpty(param.WholeMsg) ? new string[] { "" } : param.WholeMsg.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries));
foreach (string header in headers)
{
// Extract from.
if (header.ToLower().StartsWith("from"))
{
// Get from.
string[] fromHeader = header.Split(new char[] { ':' });
string combineFrom = String.Join(":", fromHeader.Skip(1));
fromHeader = combineFrom.Split(new char[] { ';' });
combineFrom = fromHeader[0];
from = combineFrom.Replace("<", "").Replace(">", "").Replace("sip:", "").Replace("sips:", "").Replace("\"", "");
param.From = from;
}
// Extract contact.
if (header.ToLower().StartsWith("contact"))
{
// Get contact.
string[] contactHeader = header.Split(new char[] { ':' });
string combineContact = String.Join(":", contactHeader.Skip(1));
contactHeader = combineContact.Split(new char[] { ';' });
combineContact = contactHeader[0];
contact = combineContact.Replace("<", "").Replace(">", "").Replace("sip:", "").Replace("sips:", "").Replace("\"", "");
param.FromContact = contact;
}
}
try
{
// Find the contact.
uriContact = _voipManager.FindContact(from);
}
catch { }
// Return the contact.
return(uriContact);
}