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Building A Document Request Protocol Part 1/2


Disparate systems communicate with each other using protocols. A protocol is a set of rules that governs the transmission of data between two independent systems. If you're familiar with protocols, then you will know that most are composed of simple, plain text commands. In this article Mitchell shows us how to create a protocol and implement it as a server using Visual Basic and Winsock.

Author Info:
By: Mitchell Harper
Rating: 5 stars5 stars5 stars5 stars5 stars / 2
February 23, 2002
TABLE OF CONTENTS:
  1. · Building A Document Request Protocol Part 1/2
  2. · Our protocol: SARP
  3. · The VB application
  4. · The ProcessCommands routine
  5. · Accepting new records from the client
  6. · Our VB App in action
  7. · Conclusion

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Building A Document Request Protocol Part 1/2 - Conclusion
(Page 7 of 7 )

As you can see, our VB app handles the client requests well, and is great for letting us know what clients are doing. It also acts as a great debugging tool.

If you can't wait until tomorrow for the next part of this article, then you'll be glad to know that the support material contains the Access database, VB app, as well as a PHP script that demonstrates talking to our VB app using sockets.

Join me tomorrow for part two of this article in which I will show you how to create a PHP script to interface with our VB app using sockets and our custom SARP protocol. Until then, feel free to download and modify this articles source code, and also learn more about protocols and Winsock by purchasing some of the books below or visiting the links shown below under the related links section.
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