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Full Discussion: checking a connection still exists?
Special Forums IP Networking checking a connection still exists? Post 302151272 by fishman2001 on Friday 14th of December 2007 06:45:59 AM
Old 12-14-2007
thanks,
I'm actually using the select() function when I receive information from apache. but I didn't know you could use it to check for sending as well. I'll have to look into that a bit more. would you happend to have any examples of using select in a send situation?

I'm might as well set up the SIGPIPE signal error capture as well. you have any good examples of this?

Cheers.
Fish.
 

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LEARN ABOUT DEBIAN

pg_wrapper

PG_WRAPPER(1)						 Debian PostgreSQL infrastructure					     PG_WRAPPER(1)

NAME

       pg_wrapper - wrapper for PostgreSQL client commands

SYNOPSIS

       client-program [--cluster version/cluster] [...]

       (client-program: psql, createdb, dropuser, and all other client programs installed in /usr/lib/postgresql/version/bin).

DESCRIPTION

       This program is run only as a link to names which correspond to PostgreSQL programs in /usr/lib/postgresql/version/bin. It determines the
       configured cluster and database for the user and calls the appropriate version of the desired program to connect to that cluster and
       database, supplying any specified options to that command.

       The target cluster is selected by the following means, in descending order of precedence:

       1.  explicit specification with the --host option

       2.  explicit specification with the --cluster option

       3.  if the PGHOST environment variable is set, no further cluster selection is performed. The default PostgreSQL version and port number
	   (from the command line, the environment variable PGPORT, or default 5432) will be used.

       4.  explicit specification with the PGCLUSTER environment variable

       5.  matching entry in ~/.postgresqlrc (see postgresqlrc(5)), if that file exists

       6.  matching entry in /etc/postgresql-common/user_clusters (see user_clusters(5)), if that file exists

       7.  If only one local cluster exists, that one will be selected.

       8.  If several local clusters exist, the one listening on the default port 5432 will be selected.

       If none of these rules match, pg_wrapper aborts with an error.

OPTIONS

       --cluster version/cluster
	   cluster is either the name of a local cluster, or takes the form host:port for a remote cluster. If port is left empty (i. e. you just
	   specify host:), it defaults to 5432.

ENVIRONMENT

       PGCLUSTER
	   If $PGCLUSTER is set, its value (of the form version/cluster) specifies the desired cluster, similar to the --cluster option. However,
	   if --cluster is specified, it overrides the value of $PGCLUSTER.

       PG_CLUSTER_CONF_ROOT
	   This specifies an alternative base directory for cluster configurations. This is usually /etc/postgresql/, but for testing/development
	   purposes you can change this to point to e. g. your home directory, so that you can use the postgresql-common tools without root
	   privileges.

FILES

       /etc/postgresql-common/user_clusters
	   stores the default cluster and database for users and groups as set by the administrators.

       $HOME/.postgresqlrc
	   stores defaults set by the user himself.

SEE ALSO

       user_clusters(5), postgresqlrc(5)

AUTHOR

       Martin Pitt <mpitt@debian.org>

Debian								    2013-01-04							     PG_WRAPPER(1)
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