Re: Specification of "/" in the host name (for Unix socket

Overall I concur with what Oliver is suggesting here.  However I
slightly prefer the URL RFC compatible syntax.

jdbc:postgresql-unix:///path/to/socket/database

thanks,
--Barry



Oliver Jowett wrote:
> On Fri, Sep 12, 2003 at 03:20:49PM -0400, Deepak Bhole wrote:
>
>>Hi,
>>
>>    We are trying to add support for Unix sockets to the current jdbc (for
>>our own release for now). The support is added via gnu classpath,located
>>at: http://www.nfrese.net/software/gnu_net_local/overview.html
>>
>>    Since Unix sockets require specification of path to the socket, the url
>>would be something like: jdbc:postgresql:///tmp:5432/template1...
>>
>>    However, since the path starts with a "/" which is a token separator,
>>parseURL in Driver.java cannot handle it, and sets the host to "/". To
>>find possible solutions, we referred to the URL RFC located at:
>>http://www.w3.org/Addressing/rfc1738.txt
>>
>>    Section 5, the BNF mentions that "% <hex> <hex>" is an escaped
>>character. We are thinking of implementing a similar idea for the jdbc
>>url. i.e. the URL jdbc:postgresql:///tmp:5432/template1... would have to
>>be specified as jdbc:postgresql://%2Ftmp:5432/template1... , 2F being
>>the ascii code for "/" in hex. This would of course necessitate the
>>addition of an extra function for parsing tokens but it would be fairly
>>simple to implement.
>>
>>    Does the above mentioned approach seem reasonable or is there another
>>format that should be followed?
>
>
> Have you considered using something like "jdbc:postgresql-unix:...." and
> having the parser handle the two cases separately? It's a different
> communication path, after all .. "host" and "port" doesn't make much sense
> for unix sockets. i.e. use something like:
>
>   jdbc:postgresql-unix:///var/run/postgresql/.s.PGSQL.5432/template1
>
> In fact, since this isn't a network protocol at all, how about dropping the
> "common internet scheme syntax" altogether in favour of clarity:
>
>   jdbc:postgresql-unix:/var/run/postgresql/.s.PGSQL.5432:template1
>
> -O
>
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