private static ErrorCode TryParseCore(string str, out CSeqHeader header)
{
osip_cseq_t *native = null;
var strPtr = Marshal.StringToHGlobalAnsi(str);
try
{
ErrorCode errorCode = NativeMethods.osip_cseq_init(&native);
if (!errorCode.EnsureSuccess())
{
header = null;
return(errorCode);
}
errorCode = NativeMethods.osip_cseq_parse(native, strPtr);
if (!errorCode.EnsureSuccess())
{
header = null;
return(errorCode);
}
header = FromNative(native);
return(errorCode);
}
finally
{
NativeMethods.osip_cseq_free(native);
Marshal.FreeHGlobal(strPtr);
}
}
internal static CSeqHeader FromNative(osip_cseq_t *native)
{
var header = new CSeqHeader
{
Method = Marshal.PtrToStringAnsi(native->method),
Number = Marshal.PtrToStringAnsi(native->number)
};
return(header);
}
private static T FromNative <T>(osip_message_t *native) where T : SipMessage, new ()
{
var message = new T
{
Version = Marshal.PtrToStringAnsi(native->sip_version),
From = native->from != osip_from_t.Null
? NameAddressHeader.FromNative(native->from)
: null,
To = native->to != osip_from_t.Null
? NameAddressHeader.FromNative(native->to)
: null,
CallId = native->call_id != osip_call_id_t.Null
? CallIdHeader.FromNative(native->call_id)
: null,
CSeq = native->cseq != osip_cseq_t.Null
? CSeqHeader.FromNative(native->cseq)
: null,
ContentType = native->content_type != osip_content_type_t.Null
? ContentTypeHeader.FromNative(native->content_type)
: null,
MimeVersion = native->mime_version != osip_content_length_t.Null
? ContentLengthHeader.FromNative(native->mime_version)
: null
};
if (message is SipRequest request)
{
request.Method = Marshal.PtrToStringAnsi(native->sip_method);
request.RequestUri = native->req_uri != osip_uri_t.Null
? SipUri.FromNative(native->req_uri)
: null;
}
else if (message is SipResponse response)
{
response.StatusCode = native->status_code;
response.ReasonPhrase = Marshal.PtrToStringAnsi(native->reason_phrase);
}
int size = NativeMethods.osip_list_size(&native->vias);
for (int i = 0; i < size; i++)
{
osip_via_t *header = (osip_via_t *)NativeMethods.osip_list_get(&native->vias, i);
message.Vias.Add(ViaHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->record_routes);
for (int i = 0; i < size; i++)
{
osip_from_t *header = (osip_from_t *)NativeMethods.osip_list_get(&native->record_routes, i);
message.RecordRoutes.Add(NameAddressHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->routes);
for (int i = 0; i < size; i++)
{
osip_from_t *header = (osip_from_t *)NativeMethods.osip_list_get(&native->routes, i);
message.Routes.Add(NameAddressHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->contacts);
for (int i = 0; i < size; i++)
{
osip_from_t *header = (osip_from_t *)NativeMethods.osip_list_get(&native->contacts, i);
message.Contacts.Add(NameAddressHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->authorizations);
for (int i = 0; i < size; i++)
{
osip_authorization_t *header = (osip_authorization_t *)NativeMethods.osip_list_get(&native->authorizations, i);
message.Authorizations.Add(AuthorizationHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->www_authenticates);
for (int i = 0; i < size; i++)
{
osip_www_authenticate_t *header = (osip_www_authenticate_t *)NativeMethods.osip_list_get(&native->www_authenticates, i);
message.WwwAuthenticates.Add(WwwAuthenticateHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->proxy_authenticates);
for (int i = 0; i < size; i++)
{
osip_www_authenticate_t *header = (osip_www_authenticate_t *)NativeMethods.osip_list_get(&native->proxy_authenticates, i);
message.ProxyAuthenticates.Add(WwwAuthenticateHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->proxy_authorizations);
for (int i = 0; i < size; i++)
{
osip_authorization_t *header = (osip_authorization_t *)NativeMethods.osip_list_get(&native->proxy_authorizations, i);
message.ProxyAuthorizations.Add(AuthorizationHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->call_infos);
for (int i = 0; i < size; i++)
{
osip_call_info_t *header = (osip_call_info_t *)NativeMethods.osip_list_get(&native->call_infos, i);
message.CallInfos.Add(CallInfoHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->allows);
for (int i = 0; i < size; i++)
{
osip_content_length_t *header = (osip_content_length_t *)NativeMethods.osip_list_get(&native->allows, i);
message.Allows.Add(ContentLengthHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->content_encodings);
for (int i = 0; i < size; i++)
{
osip_content_length_t *header = (osip_content_length_t *)NativeMethods.osip_list_get(&native->content_encodings, i);
message.ContentEncodings.Add(ContentLengthHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->alert_infos);
for (int i = 0; i < size; i++)
{
osip_call_info_t *header = (osip_call_info_t *)NativeMethods.osip_list_get(&native->alert_infos, i);
message.AlertInfos.Add(CallInfoHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->error_infos);
for (int i = 0; i < size; i++)
{
osip_call_info_t *header = (osip_call_info_t *)NativeMethods.osip_list_get(&native->error_infos, i);
message.ErrorInfos.Add(CallInfoHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->accepts);
for (int i = 0; i < size; i++)
{
osip_content_type_t *header = (osip_content_type_t *)NativeMethods.osip_list_get(&native->accepts, i);
message.Accepts.Add(ContentTypeHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->accept_encodings);
for (int i = 0; i < size; i++)
{
osip_accept_encoding_t *header = (osip_accept_encoding_t *)NativeMethods.osip_list_get(&native->accept_encodings, i);
message.AcceptEncodings.Add(AcceptEncodingHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->accept_languages);
for (int i = 0; i < size; i++)
{
osip_accept_encoding_t *header = (osip_accept_encoding_t *)NativeMethods.osip_list_get(&native->accept_languages, i);
message.AcceptLanguages.Add(AcceptEncodingHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->authentication_infos);
for (int i = 0; i < size; i++)
{
osip_authentication_info_t *header = (osip_authentication_info_t *)NativeMethods.osip_list_get(&native->authentication_infos, i);
message.AuthenticationInfos.Add(AuthenticationInfoHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->proxy_authentication_infos);
for (int i = 0; i < size; i++)
{
osip_authentication_info_t *header = (osip_authentication_info_t *)NativeMethods.osip_list_get(&native->proxy_authentication_infos, i);
message.ProxyAuthenticationInfos.Add(AuthenticationInfoHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->headers);
for (int i = 0; i < size; i++)
{
osip_header_t *header = (osip_header_t *)NativeMethods.osip_list_get(&native->headers, i);
message.OtherHeaders.Add(GenericHeader.FromNative(header));
}
size = NativeMethods.osip_list_size(&native->bodies);
for (int i = 0; i < size; i++)
{
osip_body_t *header = (osip_body_t *)NativeMethods.osip_list_get(&native->bodies, i);
message.Bodies.Add(SipBody.FromNative(header));
}
return(message);
}
public static bool TryParse(string str, out CSeqHeader header)
{
return(TryParseCore(str, out header).EnsureSuccess());
}