curvecpmessage man page

CurveCP — Message-handling programs

Synopsis

curvecpmessage [-q (optional)]  [-Q (optional)]  [-v (optional)]  [-c (optional)]  [-C (optional)]  [-s (optional)]  [prog]  

Description

This manual page documents briefly the   CurveCP commands.

A traditional UNIX-style server such as ftpd handles just   one network connection, reading input from stdin and writing output  to stdout. A "superserver" such as inetd or tcpserver listens for   network connections and starts a separate server process for   each connection.

The CurveCP command-line tools have  an extra level of modularity. The curvecpserver  superserver listens for network connections. For each connection,   curvecpserver starts the   curvecpmessage message handler;   curvecpmessage then starts a server such as ftpd.  Then ftpd sends a stream of data to curvecpmessage,   which in turn sends messages to curvecpserver,   which encrypts and authenticates the messages and sends them inside  network packets. At the same time curvecpclient receives network packets, verifies and decrypts messages inside the   packets, and passes the messages to curvecpmessage;  curvecpmessage sends a stream of data to ftpd.   The same curvecpmessage tool is also used by   curvecpclient.

curvecpserver and   curvecpclient can use programs other than   curvecpmessage. Those programs can directly  generate messages in the CurveCP message format without talking to   separate tools such as ftpd; or they can support a completely   different protocol that reuses CurveCP's cryptographic layer   but transmits different kinds of messages.

Options

How to use curvecpmessage:

-q           optional        

no error messages

-Q           optional        

print error messages (default)

-v           optional        

print extra information

-c           optional        

program is a client; server starts first

-C           optional        

program is a client that starts first

-s           optional        

program is a server (default)

prog        

run this server

See Also

curvecpserver (1), curvecpclient (1), inetd (8), tcpserver (1).

Author

This manual page was written by Sergiusz Pawlowicz debian@pawlowicz.name for  the Debian system (and may be used by others). The source  of this page is a webpage http://curvecp.org/messageapi.html .  Permission is granted to copy, distribute and/or modify this  document under public domain.

This manual page was rewritten for the Debian distribution  because the original program does not have a manual page.

Referenced By

curvecpclient(1), curvecpserver(1).