/// <summary>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </summary>
/// <remarks>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </remarks>
/// <param name="pop3">The pop3 stream.</param>
/// <param name="cancellationToken">The cancellation token</param>
public void Connect(Pop3Stream pop3, CancellationToken cancellationToken)
{
if (stream != null)
{
stream.Dispose();
}
Capabilities = Pop3Capabilities.User;
AuthenticationMechanisms.Clear();
State = Pop3EngineState.Disconnected;
ApopToken = null;
stream = pop3;
// read the pop3 server greeting
var greeting = ReadLine(cancellationToken).TrimEnd();
int index = greeting.IndexOf(' ');
string token, text;
if (index != -1)
{
token = greeting.Substring(0, index);
while (index < greeting.Length && char.IsWhiteSpace(greeting[index]))
{
index++;
}
if (index < greeting.Length)
{
text = greeting.Substring(index);
}
else
{
text = string.Empty;
}
}
else
{
text = string.Empty;
token = greeting;
}
if (token != "+OK")
{
stream.Dispose();
stream = null;
throw new Pop3ProtocolException(string.Format("Unexpected greeting from server: {0}", greeting));
}
index = text.IndexOf('>');
if (text.Length > 0 && text[0] == '<' && index != -1)
{
ApopToken = text.Substring(0, index + 1);
Capabilities |= Pop3Capabilities.Apop;
}
State = Pop3EngineState.Connected;
}
/// <summary>
/// Disconnects the <see cref="Pop3Stream"/>.
/// </summary>
public void Disconnect()
{
State = Pop3EngineState.Connection;
if (stream != null)
{
stream.Dispose();
stream = null;
}
}
/// <summary>
/// Disconnects the <see cref="Pop3Engine"/>.
/// </summary>
/// <remarks>
/// Disconnects the <see cref="Pop3Engine"/>.
/// </remarks>
public void Disconnect()
{
if (stream != null)
{
stream.Dispose();
stream = null;
}
if (State != Pop3EngineState.Disconnected)
{
State = Pop3EngineState.Disconnected;
OnDisconnected();
}
}
/// <summary>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </summary>
/// <remarks>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </remarks>
/// <param name="pop3">The pop3 stream.</param>
/// <param name="cancellationToken">The cancellation token</param>
public Task ConnectAsync(Pop3Stream pop3, CancellationToken cancellationToken)
{
return(ConnectAsync(pop3, true, cancellationToken));
}
/// <summary>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </summary>
/// <remarks>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </remarks>
/// <param name="pop3">The pop3 stream.</param>
/// <param name="cancellationToken">The cancellation token</param>
public void Connect(Pop3Stream pop3, CancellationToken cancellationToken)
{
ConnectAsync(pop3, false, cancellationToken).GetAwaiter().GetResult();
}
async Task ConnectAsync(Pop3Stream pop3, bool doAsync, CancellationToken cancellationToken)
{
if (stream != null)
{
stream.Dispose();
}
Capabilities = Pop3Capabilities.User;
AuthenticationMechanisms.Clear();
State = Pop3EngineState.Disconnected;
ApopToken = null;
stream = pop3;
// read the pop3 server greeting
var greeting = (await ReadLineAsync(doAsync, cancellationToken).ConfigureAwait(false)).TrimEnd();
int index = greeting.IndexOf(' ');
string token, text;
if (index != -1)
{
token = greeting.Substring(0, index);
while (index < greeting.Length && char.IsWhiteSpace(greeting[index]))
{
index++;
}
if (index < greeting.Length)
{
text = greeting.Substring(index);
}
else
{
text = string.Empty;
}
}
else
{
text = string.Empty;
token = greeting;
}
if (token != "+OK")
{
stream.Dispose();
stream = null;
throw new Pop3ProtocolException(string.Format("Unexpected greeting from server: {0}", greeting));
}
index = text.IndexOf('<');
if (index != -1 && index + 1 < text.Length)
{
int endIndex = text.IndexOf('>', index + 1);
if (endIndex++ != -1)
{
ApopToken = text.Substring(index, endIndex - index);
Capabilities |= Pop3Capabilities.Apop;
}
}
State = Pop3EngineState.Connected;
}
/// <summary>
/// Disconnects the <see cref="Pop3Stream"/>.
/// </summary>
public void Disconnect()
{
State = Pop3EngineState.Connection;
if (stream != null) {
stream.Dispose ();
stream = null;
}
}
/// <summary>
/// Takes posession of the <see cref="Pop3Stream"/> and reads the greeting.
/// </summary>
/// <param name="pop3">The pop3 stream.</param>
/// <param name="cancellationToken">A cancellation token</param>
public void Connect(Pop3Stream pop3, CancellationToken cancellationToken)
{
if (stream != null)
stream.Dispose ();
Capabilities = Pop3Capabilities.User;
AuthenticationMechanisms.Clear ();
State = Pop3EngineState.Connection;
ApopToken = null;
stream = pop3;
// read the pop3 server greeting
var greeting = ReadLine (cancellationToken).TrimEnd ();
int index = greeting.IndexOf (' ');
string token, text;
if (index != -1) {
token = greeting.Substring (0, index);
while (index < greeting.Length && char.IsWhiteSpace (greeting[index]))
index++;
if (index < greeting.Length)
text = greeting.Substring (index);
else
text = string.Empty;
} else {
text = string.Empty;
token = greeting;
}
if (token != "+OK") {
stream.Dispose ();
stream = null;
throw new Pop3ProtocolException (string.Format ("Unexpected greeting from server: {0}", greeting));
}
index = text.IndexOf ('>');
if (text.Length > 0 && text[0] == '<' && index != -1) {
ApopToken = text.Substring (1, index - 1);
Capabilities |= Pop3Capabilities.Apop;
}
State = Pop3EngineState.Authentication;
}
/// <summary>
/// Disconnects the <see cref="Pop3Engine"/>.
/// </summary>
/// <remarks>
/// Disconnects the <see cref="Pop3Engine"/>.
/// </remarks>
public void Disconnect ()
{
Uri = null;
if (stream != null) {
stream.Dispose ();
stream = null;
}
if (State != Pop3EngineState.Disconnected) {
State = Pop3EngineState.Disconnected;
OnDisconnected ();
}
}
