Developer.Baare.com » NandoF

Opensource is duidelijk niet altijd het juiste antwoord

admin — Tue, 15 Jun 2010 17:49:13 +0000

Op zoek naar een POP3/Mail(MIME) library voor .NET (C#) waren we bij Opo teruggekomen. Een opensource/tutorial project waarvan je het resultaat zelf gebruiken.

Het zeg er proper uit en werkte in het begin ook naar wens. Maar naar mate de applicatie langer online stond kwamen er toch meer en meer klachten binnen. Omdat we zelf geen tijd wouden steken in het uitzoeken van het MIME protocol hebben we dan maar eens een betalend product getest.
En ja hoor, deze bleek alle opgestapeld error mails perfect te processen. Opensource is dus niet noodzakelijke de beste oplossing.

Als ik volgende week tijd het ga ik mijn eigen verbouwde NandoF POP3/MIME lib ook eens testen tegen dezelfde batch. Wordt dus vervolgd…

Fighting with my POP3 / Mime parser library (2)

admin — Wed, 01 Apr 2009 21:38:07 +0000

I fixed my POP3 / Mime parser problem!

I am once again able to read all mails and attachments that ever hit my mailbox. The problem itself was a simple error in one of the MIME headers ( missing quotes to be exact ). But I ended up making some major changes to my setup.

Since OpenPOP.NET completely refused to download the faulty messages from the server I kick it out and user the NandoF POP client instead. I upgraded it to support SSL connections and made it bit less strickt in order to support my faulty messages. I also cleaned up my old import code so I now have a very solid email download component which I hope will hold a few more years.

Should anyone be interested in the adapted NandoF code feel free to ask. I originally planned to put a download in this post but it’s late and want to sleep. �

Fighting with my POP3/Mimeparser library

admin — Sun, 29 Mar 2009 20:36:46 +0000

Here’s the thing. I am using a pop3 mailbox to allow customers to send images to my application. The application parses all incoming mail, strips the attachments and uploads them into the application.

I started out using standard .NET stuff, but soon found out that that didn’t support the full MIME tree (that was 2 years ago, so if it does now please let me know). I then switched to OpenPOP.NET which was a little better but still insufficient for the MIME parsing. After a while I ended up using the OpenPOP.NET POP3 client in combination with the MIME e-mail parser in the NandoF library.

This combination worked very well for me over the last 2 years, but recently I’ve been receiving customer complaints about messages not getting through. I debugged the messages and it turned they had faults in the MIME formatting. Strangely enough gmail doesn’t seem to care and displays them anyway. So I figured I should too. And that’s pretty much where I am now. Both OpenPOP.NET and the NandoF library haven’t evolved since 2005. The OpenPOP.NET lib simply dumps the faulty messages on download and the NandoF lib doesn’t support SSL connections.

I choose to dump the OpenPOP.Net lib and expanded the NandoF lib to support SSL connections. 15 minutes ago I pin-pointed the MIME error, so all that is left to do is to fix it. I’ll let you know when I do… �