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Ocamlnet 3 Reference Manual

Ocamlnet consists of a number of libraries:

  • netstring is about processing strings that occur in network context
  • netcgi1 and netcgi2 focus on portable web applications
  • nethttpd is a web server component (HTTP server implementation)
  • netplex is a generic server framework
  • rpc implements OncRPC
  • netclient implements clients for HTTP, FTP, and Telnet
  • equeue is an event queue used for many protocol implementations
  • shell is about calling external commands
  • netshm provides shared memory for IPC purposes
  • netsys contains bindings for system functions
  • smtp and pop are two further client implementations
A number of ideas and concepts are used throughout the libraries:

  • Netchannels are a way to abstract sequential I/O channels
  • The event queues provided by Equeue and Unixqueue make asynchronous protocol interpreters possible

Foreword

Some introductional notes how Ocamlnet is organized:

Platform support

Please read this document for extended information which features are supported on which platform:

  • Platform: Which functions are available on which platform (POSIX/Win32). Also hints for portable programming.

The netstring library

netstring focuses on string processing functions.


Netconversion
Conversion between character encodings
Netchannels
Object-oriented I/O: Basic types and classes
Netstream
A netstream is an input channel that is read block by block.
Mimestring
Low-level functions to parse and print mail and MIME messages
Netmime
Netmime contains high-level classes and functions to process mail and MIME messages.
Netsendmail
Functions to compose and send electronic mails
Neturl
Uniform Resource Locators (URLs)
Netaddress
Parsing of mail addresses
Netbuffer
A Netbuffer.t is a buffer that can grow and shrink dynamically.
Netpagebuffer
Buffer for page-aligned I/O
Netdate
Support for common date/time parsing and formatting.
Netencoding
Base64, Quoted Printable, URL encoding, HTML escaping
Netulex
Support module for Alain Frisch's ulex lexer generator
Netaccel
Accelerators for bytecode
Netaccel_link
Enables accelerator module Netaccel
Nethtml
Parsing of HTML
Nethttp
Basic definitions for the HTTP protocol
Netstring_str
Wrapper for regexps with Str syntax
Netstring_pcre
Wrapper for regexps with PCRE syntax
Netmappings
Internal access to the character conversion database
Netaux
Internal auxiliary functions

Guides

The netzip library

Support for (un)compressing data on the fly with object channels. Requires ocamlzip.


Netgzip
Gzip object channels

The netcgi1 library

The netcgi1 library is no longer supported in Ocamlnet 3. Please switch to netcgi2.

The netcgi2 library

This is the revised library for Web applications, now called netcgi2.


Netcgi
Common data-structures for CGI-like connectors.
Netcgi_common
Functions to develop new connectors.
Netcgi_cgi
Classical CGI connector.
Netcgi_fcgi
FastCGI connector.
Netcgi_ajp
Apache JServ Protocol (AJP) 1.3 connector.
Netcgi_scgi
SCGI connector.
Netcgi_test
Connector for testing your code.
Netcgi_dbi
Pools of connections for the ocamldbi generic database interface.
Netcgi1_compat
Compatibility module with the previous version of Netcgi.

Guides

The netcgi2-apache library

This is an Apache connector for the netcgi2 library.


Netcgi_apache
Netcgi Apache "mod" connector.
Netcgi_modtpl

The netcgi2-plex library

Netplex support for running Netcgi2 connectors:


Netcgi_plex
Netplex support for FastCGI, SCGI and AJP connectors

The nethttpd library

The nethttpd library is a Web server component written in O'Caml. For a full web server, you'll also need netplex.


Nethttpd_types
Type definitions for the HTTP daemon
Nethttpd_kernel
The protocol kernel of the HTTP daemon
Nethttpd_reactor
The reactive encapsulation of the HTTP daemon
Nethttpd_engine
The event-based encapsulation of the HTTP daemon
Nethttpd_services
Service Providers for HTTP daemon
Nethttpd_plex
Netplex support
Nethttpd_util
Utility functions

Guides

The netplex library

The netplex library is a protocol-independent server framework. Especially, it can be used in conjunction with nethttpd to build web servers, and with rpc to build RPC servers.


Netplex_types
Types for Netplex
Netplex_config
Read the configuration file
Netplex_controller
Controller
Netplex_container
Containers
Netplex_sockserv
Socket service creation
Netplex_workload
Workload management
Netplex_kit
Netplex toolkit
Netplex_cenv
Container environment
Netplex_log
Loggers
Netplex_main
Main program for Netplex servers
Netplex_mp
Multi-processing provider
Netplex_mt
Multi-threading provider
Netplex_mutex
Netplex-wide mutexes
Netplex_semaphore
Netplex-wide semaphores
Netplex_sharedvar
Netplex-wide variables
Netplex_encap
Type-safe marshalling between processes of the same executable
Rpc_netplex
Netplex support for RPC servers (TCP only)

Guides

The rpc library

This library implements OncRPC (alias SunRPC).


Rtypes
Basic types
Xdr
External Data Representation
Rpc
Common types and exceptions
Rpc_program
RPC programs
Rpc_client
RPC clients
Rpc_simple_client
Synchronous API for RPC clients
Rpc_proxy
RPC proxies
Rpc_server
RPC servers
Rpc_auth_sys
Authentication module AUTH_SYS
Rpc_portmapper
Portmapper version 2
Rpc_portmapper_aux
Rpc_portmapper_clnt
Rpc_transport
Low-level RPC transporters
Rpc_packer

Guides

The rpc-auth-local extension

Authentication for local socket connections.


Rpc_auth_local
Return the authentication method AUTH_LOCAL.

The rpc-auth-dh extension

This is Diffie-Hellman authentication for OncRPC (also known as "Secure RPC").


Rpc_auth_dh
Diffie-Hellman authentication (AUTH_DH alias AUTH_DES)
Rpc_key_service
Contact the keyserv daemon to encrypt/decrypt data with the common key.
Rpc_time
Get the time of the server (using the RFC 868 netdate protocol)

The rpc-xti extension

System V provides a network API called XTI in addition to the socket API. This library allows it to connect to RPC services that can only be reached over a local XTI connection ("cots" connection).


Rpc_xti_client
Minimal support for TI-RPC over the XTI API

The rpc_ssl extension

This library allows you to tunnel RPC through SSL/TLS.


Rpc_ssl
Securing RPC by SSL

The netcamlbox library

Camlbox is a fast message-passing system between processes running on the same machine. It uses shared memory for communication. A message sent to a Camlbox is only copied once, not twice.


Netcamlbox
Camlboxes are a fast IPC mechanism to send Ocaml values from one process to another.

The netclient library

This library includes clients for HTTP, Telnet, and (incomplete) FTP.


Http_client
HTTP 1.1 client
Telnet_client
Telnet client
Ftp_client
FTP client
Ftp_data_endpoint
Senders and receivers for the FTP data connection

The equeue library

equeue is a fundamental library for event queues. It is mainly used by a number of other libraries of Ocamlnet to parallelize network code (so-called multiplexing).


Equeue
Equeue implements generic event queues.
Unixqueue
Unixqueues are one of the two forms of system event loops provided by Ocamlnet.
Unixqueue_pollset
Unixqueue implementation on top of Netsys_pollset
Unixqueue_select
This the old Unix.select-based imeplementation of event systems which was the default one until Ocamlnet-2.2.
Uq_engines
An engine performs a certain task in an autonomous way.
Uq_socks5
This module implements a SOCKS version 5 client (see RFC 1928) for use with the Uq_engines.connector, Uq_engines.listener, and Uq_engines.datagram_provider engine factories.
Uq_resolver
Support for pluggable resolvers
Uq_io
Unified engines for stream I/O

Guides

The equeue-gtk1 and equeue-gtk2 extensions

Extensions for equeue to integrate the event queue into user interfaces made with lablgtk and lablgtk2


Uq_gtk
Integration with lablgtk/lablgtk2 event systems

The equeue-ssl extension

Extensions for equeue to support SSL


Uq_ssl
Asynchronous SSL connections

The equeue-tcl extension

Extension for equeue to integrate the event queue into user interfaces made with labltk


Uq_tcl
Integration with the labltk event system

The pop library

This is a simple POP 3 client.


Netpop
This is an interface for the Post Office Protocol - Version 3 (POP3) as specifed by RFC 1939.

The smtp library

This is a simple SMTP client.


Netsmtp
This is an interface for the Simple Mail Tranfer Protocol (SMTP) as specified by RFC 2821.

The shell library

The shell library allows you to start external commands. It is integrated into equeue.


Shell
Calls external programs, creates pipelines, etc.
Shell_sys
Calls external programs, creates pipelines, etc.
Shell_uq
Run shell commands within Unixqueues

Guides

The netshm library

The netshm library manages a shared memory object either as hash table or array. It is designed to be used in multi-processing program architectures.


Netshm
Shared memory for O'Caml programs using multi-processing
Netshm_data
Data representation for shared memory
Netshm_hashtbl
Hash tables in shared memory
Netshm_array
Arrays in shared memory

Guides

The netsys library

The netsys library contains a number of low-level functions used by other Ocamlnet libraries.


Platform
Netexn
Exception registry
Netlog
Basic logging facility
Netsys
System calls missing in the Unix module
Netsys_posix
POSIX-specific system calls missing in the Unix module
Netsys_oothr
Object-oriented thread API
Netsys_signal
Signal handler framework
Netsys_mem
Bigarrays as memory buffers
Netsys_pollset
Sets of file descriptors for polling
Netsys_pollset_generic
Returns a good standard implementation of pollset for this platform.
Netsys_pollset_posix
Pollsets for POSIX operating systems
Netsys_pollset_win32
Pollsets for Win32
Netsys_win32
Primitives for Win32

Index

Index of types
Index of exceptions
Index of values
Index of class attributes
Index of class methods
Index of classes
Index of class types
Index of modules
Index of module types

Authors

The Ocamlnet libraries have been initially written by Gerd Stolpmann and Patrick Doane.

Contributions by

  • Nicolas George: Netdate
  • Eric Stokes: FastCGI support
  • Pierre Habouzit: SMTP client
  • Christophe Troestler: Revised version of netcgi
  • Deokhwan Kim: Support for EUC-KR
Sponsorships by

  • Baretta s.r.l: Nethttpd
  • California State University: SSL support for RPC, Netplex

This web site is published by Informatikb√ľro Gerd Stolpmann
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