0.29.0 - UlricE/pen GitHub Wiki

Pen 0.29.0 introduces transparent reverse proxying on supported platforms, which currently means Linux, FreeBSD and OpenBSD. This allows the backend servers to see the client's real address. It can be used in combination with SSL termination.

Another improvement is that the server table size is no longer fixed at startup but grows dynamically as servers are added. The -S option is still accepted but doesn't do anything. The client and connection tables can also be expanded on the fly, reducing the number of restarts.

Full list of changes from 0.28.0:

150608  Released 0.29.0.

150528  Transparent reverse proxy support for Linux, FreeBSD and OpenBSD.

150527  Allow the client table size to be updated on the fly. Default size still 2048.
        Allow the connection table size to be updated in the fly. Default still 500.
        See penctl.1, options clients_max and conn_max.

150526  Introduced the macro NO_SERVER to be used instead of -1 to signify
        error conditions and such.
        Removed the fixed server table size along with the -S option.

150525  Fixed cosmetic bug in startup code which required port to be specified
        on backend servers even if it was the same as the listening port.