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29 lines
1.4 KiB
Plaintext
29 lines
1.4 KiB
Plaintext
XNET - new local protocol implementation (win32)
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Firebird 2.0 has replaced the former (often referred to as IPC or IPServer)
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implementation of the local transport protocol with a new one, named XNET.
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It serves exactly the same goal - provide an efficient way to connect to the
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local server (without a remote node name in the connection string) - but it's
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implemented differently, in order to address the known issues with the old
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protocol. Generally speaking, both implementations use shared memory for
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inter-process communication, but XNET eliminates usage of window messages to
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deliver attachment requests and it also implements another synchronization
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logic.
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Advantages of the XNET protocol over IPServer:
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- it works with Classic Server
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- it works for non-interactive services and terminal sessions
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- it doesn't lock up when using a few connections simultaneously
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From the performance point of view, they should behave similarly, although
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XNET is expected to be slightly faster.
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As for disadvantages, there's only one - implementations are not compatible
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with each other. It means that your fbclient.dll version should match the
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version of the used server binaries (fbserver.exe or fb_inet_server.exe),
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otherwise you won't be able to establish a local connection (a TCP localhost
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loopback will do the trick, of course).
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