What issues should I expect when porting an application from Genuine Channels to WCF
Genuine Channels is a set of 3rd party chancels for .Net Remoting.
I have been given the tasks of replace the usages of .Net Remoting in a rick client and server with WCF. I am familiar with standard .net remoting but not Ge开发者_StackOverflow社区nuine Channels.
So what problems should I expect and any pointers to the solutions?
There are a few features of GenuineChannels that were the reasons we originally used it over standard .Net remoting:
- it works through authenticating proxies, whereas .Net remoting would not
- it can broadcast events on the server and have the clients receive them
- it has built-in functionality to deal with disconnections (reporting them to the application via events) and auto-reconnections
- it integrates closely with SSPI authentication, but also has the ability to switch this for an alternative mechanism (it is referred to by GC as ZPA)
- it can gzip compress the traffic between the server and clients
- it can encrypt the traffic between the server and clients (using underlying Win32 calls)
- it has integrity checking, which prevents modification by an intermediate host
It also has lots of other security-related features which your application may be using.
I haven't used WCF so I don't know whether these are supported, but it should give you a starting list of things to check.
Sending event to client is not a natural behavior of WCF. You should use a duplex contract there is some knowledge here: Sending events from WCF server
Other then that WCF is pretty cool: you define the data contract, and the operation contract using attributes, and you have a service running. Some more care should be taken when trying to serialize circular objects (but it is solved) and the rest - you will have to find while you're porting / learning WCF.
There is an easy way - to use a shared dll, and the hard way (but the more "soa" friendly) - to generate a server proxy to the client.
Juval Lowy - This is a good book to start, and the rest is googlable....
精彩评论