public string LIST(int msg_number)
{
string temp="";
if (state != connect_state.TRANSACTION )
{
//the pop command LIST is only valid in the TRANSACTION state
temp="Connection state not = TRANSACTION";
}
else
{
issue_command ("LIST " + msg_number.ToString ());
temp=read_single_line_response(); //when the message number is supplied, expect a single line response
}
return(temp);
}
public string NOOP()
{
string temp;
if (state != connect_state.TRANSACTION )
{
//the pop command NOOP is only valid in the TRANSACTION state
temp="Connection state not = TRANSACTION";
}
else
{
issue_command ("NOOP");
temp=read_single_line_response();
}
return(temp);
}
public string PASS()
{
string temp;
if (state != connect_state.AUTHORIZATION)
{
//the pop command PASS is only valid in the AUTHORIZATION state
temp="Connection state not = AUTHORIZATION";
}
else
{
if (pwd !=null)
{
issue_command ("PASS " + pwd);
temp=read_single_line_response();
if (!error)
{
//transition to the Transaction state
state=connect_state.TRANSACTION;
}
}
else
{
temp="No Password set.";
}
}
return(temp);
}
public string PASS(string password)
{
pwd=password; //put the supplied password into the appropriate property
return(PASS()); //call PASS() with no arguement
}
public string QUIT()
{
//QUIT is valid in all pop states
}
public string RETR (int msg)
{
string temp="";
if (state != connect_state.TRANSACTION )
{
//the pop command RETR is only valid in the TRANSACTION state
temp="Connection state not = TRANSACTION";
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