private static ToHeaderField ParseToHeaderField(string p)
{
try
{
string name;
if (p.StartsWith(ToHeaderField.LongName))
{
name = ToHeaderField.LongName + ":";
}
else
{
name = ToHeaderField.ShortName + ":";
}
name = name.ToLower();
p = p.ToLower();
int s = p.IndexOf(name);
int e = p.IndexOf("<");
string u = p.Substring(e + 1, p.Length - e - 2);
ToHeaderField t = new ToHeaderField();
t.Uri = new SipUri(u);
return(t);
}
catch (Exception exception)
{
throw exception;
}
}
public static SipResponse GetSipReponse(string message, byte[] networkData, int readSize)
{
try
{
string[] parts = message.Split('\n');
if (parts.Length == 0)
{
return(null);
}
StatusLine sl = ParseStatusLine(parts[0]);
if (sl == null)
{
return(null);
}
SipResponse response = new SipResponse();
response.StatusLine = sl;
foreach (string pt in parts)
{
if (pt.StartsWith(ViaHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
ViaHeaderField via = new ViaHeaderField();
via.Parse(p);
response.ViaHeaders.Add(via);
}
else if (pt.StartsWith(ToHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
ToHeaderField thf = ParseToHeaderField(p);
response.To = thf;
}
else if (pt.StartsWith(FromHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
FromHeaderField fhf = ParseFromHeaderField(p);
response.From = fhf;
}
else if (pt.StartsWith(CallIdHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
CallIdHeaderField chf = new CallIdHeaderField();
chf.Parse(p);
response.CallId = chf;
}
else if (pt.StartsWith(CSeqHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
CSeqHeaderField cshf = new CSeqHeaderField();
cshf.Parse(p);
response.CSeq = cshf;
}
else if (pt.StartsWith(ContentLengthHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
ContentLengthHeaderField clhf = new ContentLengthHeaderField();
clhf.Parse(p);
response.ContentLength = clhf;
int len = clhf.Length;
if (len > 0)
{
response.Body = new byte[len];
Array.Copy(networkData, (readSize - len), response.Body, 0, len);
}
}
else if (pt.StartsWith(ContentTypeHeaderField.LongName))
{
string p = pt.Replace('\r', ' ').TrimEnd();
ContentTypeHeaderField cthf = new ContentTypeHeaderField();
cthf.Parse(p);
response.ContentType = cthf;
}
}
return(response);
}
catch (Exception exception)
{
string error_text = String.Concat(Assembly.GetExecutingAssembly().GetName().Name, Dns.GetHostName()
, "[CipSipParser][GetSipReponse]: " + message + " | exception: " + exception.Message + " | innerException: " + (exception.InnerException != null && !string.IsNullOrEmpty(exception.InnerException.Message) ? exception.InnerException.Message : "")
, exception.StackTrace);
Console.WriteLine(error_text);
throw exception;
}
}
