/// <summary>
/// Closes connection to POP3 server.
/// </summary>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
/// <exception cref="InvalidOperationException">Is raised when POP3 client is not connected.</exception>
public override void Disconnect()
{
if (this.IsDisposed)
{
throw new ObjectDisposedException(this.GetType().Name);
}
if (!this.IsConnected)
{
throw new InvalidOperationException("POP3 client is not connected.");
}
try{
// Send QUIT command to server.
WriteLine("QUIT");
}
catch {
}
try{
base.Disconnect();
}
catch {
}
if (m_pMessages != null)
{
m_pMessages.Dispose();
m_pMessages = null;
}
m_ApopHashKey = "";
m_pExtCapabilities.Clear();
m_IsUidlSupported = false;
}
/// <summary>
/// Fills messages info.
/// </summary>
public POP3_ClientMessageCollection List()
{
if (this.IsDisposed)
{
throw new ObjectDisposedException(this.GetType().Name);
}
if (!this.IsConnected)
{
throw new InvalidOperationException("You must connect first.");
}
if (!this.IsAuthenticated)
{
throw new InvalidOperationException("You must authenticate first.");
}
m_pMessages = new POP3_ClientMessageCollection(this);
/*
First make messages info, then try to add UIDL if server supports.
*/
/* NOTE: If reply is +OK, this is multiline respone and is terminated with '.'.
Examples:
C: LIST
S: +OK 2 messages (320 octets)
S: 1 120
S: 2 200
S: .
...
C: LIST 3
S: -ERR no such message, only 2 messages in maildrop
*/
WriteLine("LIST");
// Read first line of reply, check if it's ok.
string line = ReadLine();
if(line.StartsWith("+OK")){
// Read lines while get only '.' on line itshelf.
while(true){
line = ReadLine();
// End of data
if(line.Trim() == "."){
break;
}
else{
string[] no_size = line.Trim().Split(new char[]{' '});
m_pMessages.Add(Convert.ToInt32(no_size[1]));
}
}
}
else{
throw new POP3_ClientException(line);
}
// Try to fill messages UIDs.
/* NOTE: If reply is +OK, this is multiline respone and is terminated with '.'.
Examples:
C: UIDL
S: +OK
S: 1 whqtswO00WBw418f9t5JxYwZ
S: 2 QhdPYR:00WBw1Ph7x7
S: .
...
C: UIDL 3
S: -ERR no such message
*/
WriteLine("UIDL");
// Read first line of reply, check if it's ok
line = ReadLine();
if(line.StartsWith("+OK")){
m_IsUidlSupported = true;
// Read lines while get only '.' on line itshelf.
while(true){
line = ReadLine();
// End of data
if(line.Trim() == "."){
break;
}
else{
string[] no_uid = line.Trim().Split(new char[]{' '});
m_pMessages[Convert.ToInt32(no_uid[0]) - 1].SetUID(no_uid[1]);
}
}
}
else{
m_IsUidlSupported = false;
}
return m_pMessages;
}
/// <summary>
/// Closes connection to POP3 server.
/// </summary>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
/// <exception cref="InvalidOperationException">Is raised when POP3 client is not connected.</exception>
public override void Disconnect()
{
if(this.IsDisposed){
throw new ObjectDisposedException(this.GetType().Name);
}
if(!this.IsConnected){
throw new InvalidOperationException("POP3 client is not connected.");
}
try{
// Send QUIT command to server.
WriteLine("QUIT");
}
catch{
}
try{
base.Disconnect();
}
catch{
}
if(m_pMessages != null){
m_pMessages.Dispose();
m_pMessages = null;
}
m_ApopHashKey = "";
m_pExtCapabilities.Clear();
m_IsUidlSupported = false;
}
/// <summary>
/// Fills messages info.
/// </summary>
private void FillMessages()
{
m_pMessages = new POP3_ClientMessageCollection(this);
/*
* First make messages info, then try to add UIDL if server supports.
*/
/* NOTE: If reply is +OK, this is multiline respone and is terminated with '.'.
* Examples:
* C: LIST
* S: +OK 2 messages (320 octets)
* S: 1 120
* S: 2 200
* S: .
* ...
* C: LIST 3
* S: -ERR no such message, only 2 messages in maildrop
*/
WriteLine("LIST");
// Read first line of reply, check if it's ok.
string line = ReadLine();
if (line.StartsWith("+OK"))
{
// Read lines while get only '.' on line itshelf.
while (true)
{
line = ReadLine();
// End of data
if (line.Trim() == ".")
{
break;
}
else
{
string[] no_size = line.Trim().Split(new char[] { ' ' });
m_pMessages.Add(Convert.ToInt32(no_size[1]));
}
}
}
else
{
throw new POP3_ClientException(line);
}
// Try to fill messages UIDs.
/* NOTE: If reply is +OK, this is multiline respone and is terminated with '.'.
* Examples:
* C: UIDL
* S: +OK
* S: 1 whqtswO00WBw418f9t5JxYwZ
* S: 2 QhdPYR:00WBw1Ph7x7
* S: .
* ...
* C: UIDL 3
* S: -ERR no such message
*/
WriteLine("UIDL");
// Read first line of reply, check if it's ok
line = ReadLine();
if (line.StartsWith("+OK"))
{
m_IsUidlSupported = true;
// Read lines while get only '.' on line itshelf.
while (true)
{
line = ReadLine();
// End of data
if (line.Trim() == ".")
{
break;
}
else
{
string[] no_uid = line.Trim().Split(new char[] { ' ' });
m_pMessages[Convert.ToInt32(no_uid[0]) - 1].SetUID(no_uid[1]);
}
}
}
else
{
m_IsUidlSupported = false;
}
}
