How to code for different versions of frameworks/services/etc ....

[Tassos Souris]

Hi! Think that this is the right thread for this question...

Let's say that i write a client library for a server. The server of course gets updated and new versions of that server are released.

How to code the client library in order to do stuff such as:
1) If the client library is for version 2 but the
user connects to version 1 of the server using that
library, how to guard for unsupported operations
etc etc

2) other version related problems that may occur...


In general any link to a resource (such as an article, a tutorial, or even a book) on this topic is highly appreciated!!!!

[johny10151981]

first of all make sure your server has backward compatibility.

Make sure updated server didn't make obsolete any command supported by version 1.

I hope your Client has capability to ignore unknown command,

In case of version 2 client connecting version 1 server,

1. If server has the capabilities to response on version request then, make sure it can decide the server request according to version

[Tassos Souris]

i am searching mostly for some ready solutions, either in the form of design patterns or in frameworks that take care of version matching etc etc... is there anything for that?