|
public Find ( SipUri uri ) : |
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| uri | SipUri | |
| return | ||
/// <summary>
/// Update all contacts (registration bindings) for a user.
/// </summary>
/// <param name="context"></param>
/// <param name="registration"></param>
/// <returns></returns>
/// <remarks>
/// Should be done after a successful authentication.
/// </remarks>
private List<RegistrationContact> UpdateContacts(RequestContext context, Registration registration)
{
var contactHeader = context.Request.Headers[ContactHeader.LNAME] as ContactHeader;
if (contactHeader == null)
{
_logger.Warning("Contact header was not specified.");
context.Response.ReasonPhrase = "Missing/Invalid contact header.";
context.Response.StatusCode = StatusCode.BadRequest;
return null;
}
var newContacts = new List<RegistrationContact>();
foreach (Contact contact in contactHeader.Contacts)
{
int expires = MinExpires;
if (contact.Parameters.Contains("expires"))
{
if (!int.TryParse(contact.Parameters["expires"], out expires))
{
_logger.Warning("Invalid expires value: " + contact.Parameters["expires"]);
context.Response.ReasonPhrase = "Invalid expires value on contact header.";
context.Response.StatusCode = StatusCode.BadRequest;
return null;
}
if (expires > 0 && expires < MinExpires)
{
_logger.Warning("Too small expires value: " + expires);
context.Response.ReasonPhrase = "Increase expires value.";
context.Response.StatusCode = StatusCode.IntervalTooBrief;
context.Response.Headers.Add("MinExpires", new NumericHeader("MinExpires", MinExpires));
return null;
}
}
RegistrationContact oldContact = registration.Find(contact.Uri);
if (oldContact != null && oldContact.CallId == context.Request.CallId
&& context.Request.CSeq.Number < oldContact.SequenceNumber)
{
context.Response.StatusCode = StatusCode.BadRequest;
context.Response.ReasonPhrase = "CSeq value in contact is out of order.";
return null;
}
// Add new contact
newContacts.Add(new RegistrationContact(contact.Name, contact.Uri)
{
CallId = context.Request.CallId,
Expires = expires,
ExpiresAt = DateTime.Now.AddSeconds(expires),
Quality = context.Request.Contact.Quality,
SequenceNumber = context.Request.CSeq.Number,
UpdatedAt = DateTime.Now,
});
}
// Now replace contacts.
// We do it in two steps since no contacts should be updated
// if someone fails.
_repository.UpdateContacts(registration, newContacts);
return newContacts;
}
/// <summary>
/// Update all contacts (registration bindings) for a user.
/// </summary>
/// <param name="context"></param>
/// <param name="registration"></param>
/// <returns></returns>
/// <remarks>
/// Should be done after a successful authentication.
/// </remarks>
private List <RegistrationContact> UpdateContacts(RequestContext context, Registration registration)
{
var contactHeader = context.Request.Headers[ContactHeader.LNAME] as ContactHeader;
if (contactHeader == null)
{
_logger.Warning("Contact header was not specified.");
context.Response.ReasonPhrase = "Missing/Invalid contact header.";
context.Response.StatusCode = StatusCode.BadRequest;
return(null);
}
var newContacts = new List <RegistrationContact>();
foreach (Contact contact in contactHeader.Contacts)
{
int expires = MinExpires;
if (contact.Parameters.Contains("expires"))
{
if (!int.TryParse(contact.Parameters["expires"], out expires))
{
_logger.Warning("Invalid expires value: " + contact.Parameters["expires"]);
context.Response.ReasonPhrase = "Invalid expires value on contact header.";
context.Response.StatusCode = StatusCode.BadRequest;
return(null);
}
if (expires > 0 && expires < MinExpires)
{
_logger.Warning("Too small expires value: " + expires);
context.Response.ReasonPhrase = "Increase expires value.";
context.Response.StatusCode = StatusCode.IntervalTooBrief;
context.Response.Headers.Add("MinExpires", new NumericHeader("MinExpires", MinExpires));
return(null);
}
}
RegistrationContact oldContact = registration.Find(contact.Uri);
if (oldContact != null && oldContact.CallId == context.Request.CallId &&
context.Request.CSeq.Number < oldContact.SequenceNumber)
{
context.Response.StatusCode = StatusCode.BadRequest;
context.Response.ReasonPhrase = "CSeq value in contact is out of order.";
return(null);
}
// Add new contact
newContacts.Add(new RegistrationContact(contact.Name, contact.Uri)
{
CallId = context.Request.CallId,
Expires = expires,
ExpiresAt = DateTime.Now.AddSeconds(expires),
Quality = context.Request.Contact.Quality,
SequenceNumber = context.Request.CSeq.Number,
UpdatedAt = DateTime.Now,
});
}
// Now replace contacts.
// We do it in two steps since no contacts should be updated
// if someone fails.
_repository.UpdateContacts(registration, newContacts);
return(newContacts);
}
