Re: Trying to use NSStream

FROM : Development
DATE : Sun Jan 13 02:16:04 2008

Ok... Did any one else get the memo that the EOL character had been 
changed to the char(10).
Every document I've read and all information I have seen tells me that 
I suffix every line I send to a server with either \n or \r or \n\r or 
some other such combination. Either way... I have never had to do 
sendString = [NSString stringWithFormat:@"%@\r%c",aString,10]; I do 
not know what Char 10 is however I am assuming it is an EOL or EOF 
character? Either way this seems to be unique to NSStream as other 
tools I've used require only the \r. When using NSStream it seems that 
for anything but http it requires both a \r and character 10. (\n 
didn't work and neither did the character by itself.)
I discovered that with every server, the final character of each 
welcome message was ascii character 10 preceded by character 13 so I 
tried it and it worked.

I suppose I'm hoping some one can explain this to me. Even though it 
is working I do not understand why and would be grateful if some one 
could clarify.

On Jan 12, 2008, at 4:24 PM, Development wrote:

> Hmm.. I am quite lost here and cannot seem to find any information. 
> I am trying to use NSStream to connect to and communicate with a 
> mail server. The connection actually seems ok and I get the +OK 
> hello message from the server then all further communications fail.
>
> When I try to send a request to the serve I get no data back... 
> However I have no trouble at all communicating with http servers. 
> Any way this is my write code:
>
> - (IBAction)sendText:(NSString*)stringToSend
> {
>     NSLog(@"StringToSend %@",stringToSend);
>     [rawData insertText:[NSString stringWithFormat:@"\n
> %@",stringToSend]];
>     [textField setStringValue:@""];
>    NSData * dataToSend = [stringToSend 
> dataUsingEncoding:NSISOLatin1StringEncoding];
>    if (ostream) {
>        int remainingToWrite = [dataToSend length];
>        void * marker = (void *)[dataToSend bytes];
>        while (0 < remainingToWrite) {
>            int actuallyWritten = 0;
>            actuallyWritten = [ostream write:marker 
> maxLength:remainingToWrite];
>            remainingToWrite -= actuallyWritten;
>            marker += actuallyWritten;
>        }
>    }
> }
>
> After I send a block of data and get nothing back. The input stream 
> has no data available and the event sent to the controller is 
> NSStreamEventHasSpaceAvailable along with the outputstream for the 
> stream variable. I have made sure that I append \n to the end of 
> each string I send, I have also tried \r instead but nothing seems 
> to help. Any ideas?
>
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