Re: [TCLCORE] TIP Roundup (162)

[David G. <dav...@po...>]

Donal K. Fellows wrote:

>    TIP #162	IPv6 Sockets for Tcl

Years back, I added IPv6 capability to a socket channel driver
extension.  I thought about that one quite a lot about 3 years ago.  The
big problem with adding v6 regards name resolution fundamentals.  TCP/IP
isn't the only networking layer there is, and it wouldn't be prudent to
restrict the generic layer to IP naming concepts alone.

It'll take me a bit to get up to speed again, but I can head this one.

1) real async multi-protocol (IP/dns,IPX/SAP,IrDA/IAS,AppleTalk,etc..)
name resolver with support for all three types: static, dynamic and
persistent resolution systems.

Maybe fix Tcl_PosixError(), or the error message calls around it, so it
can support the errors found in netdb.h so we can get back meaningful
error messages that can distinguish HOST_NOT_FOUND from TRY_AGAIN
instead of the current meaningless EINVAL.

2) A plugin system for extensions to insert new protocols at run-time or
internally when compiled in.

3) Allow for calls such as the following:
   socket 3ffe:b80:185d:1::29 ftp
   socket -protocol spx FEDCBA98.1A2B3C5D7E9F 0453

When the IPX/SPX module has been installed -^

4) Maybe update the windows channel driver code to use WSAEventSelect()
with job pooling and get away from the ancient Win 3.1 holdover of
WSAAsyncSelect()