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2009/05/04 22:15 | by Free Software and Open Source projects have a long tradition of forks and duplicate efforts. We enjoy "doing it ourselves", no matter if someone else has done something very similar already.
Alternative libraries that cover parts of libcurl's features:
libcurl (MIT)
- a highly portable and easy-to-use client-side URL transfer library, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TELNET, DICT, FILE, TFTP and LDAP. libcurl also supports HTTPS certificates, HTTP POST, HTTP PUT, FTP uploading, kerberos, HTTP form based upload, proxies, cookies, user+password authentication, file transfer resume, http proxy tunnelling and more!
libghttp (LGPL)
- Having a glance at libghttp (a gnome http library), it looks as if it works rather similar to libcurl (for http). There's no web page for this and the person who's email is mentioned in the README of the latest release I found claims he has passed the leadership of the project to "eazel". Popular choice among GNOME projects.
- More complex, and and harder to use than libcurl is. Includes everything from multi-threading to HTML parsing. The most notable transfer-related feature that libcurl does not offer but libwww does, is caching.
- C++ library "for transferring files via http, ftp, gopher, proxy server". Based on 'snarf' 2.0.9-code (formerly known as libsnarf). Quote from freshmeat: "As the author of snarf, I have to say this frightens me. Snarf's networking system is far from robust and complete. It's probably full of bugs, and although it works for maybe 85% of all current situations, I wouldn't base a library on it."
- An HTTP and WebDAV client library, with a C interface. I've mainly heard and seen people use this with WebDAV as their main interest.
- Part of glib (GNOME). Supports: HTTP 1.1, Persistent connections, Asynchronous DNS and transfers, Connection cache, Redirects, Basic, Digest, NTLM authentication, SSL with GnuTLS, Proxy support including SSL, SOCKS support, POST data. Not portable. Lacks: cookie support, NTLM for proxies, GSS, gzip encoding, trailers in chunked responses, portability and more.
- Handles URLs, protocols, transports for the Mozilla browser.
- Minimal download library targeted to be much smaller than the above mentioned netlib. HTTP and FTP support.
- While not a library at all, I've been told that people sometimes extract the network code from it and base their own hacks from there.
- Does HTTP and FTP transfers (both ways), supports file: URLs, and an API for URL parsing. The utility fetch that is built on libfetch is an integral part of the FreeBSD operating system.
- "a small, robust, flexible library for downloading files via HTTP using the GET method."
- "a very small C library to make http queries (GET, HEAD, PUT, DELETE, etc.) easily portable and embeddable"
- "The Windows Internet (WinINet) application programming interface (API) enables applications to interact with Gopher, FTP, and HTTP protocols to access Internet resources."
- (Windows) Provides client-side protocol support for communication with HTTP servers. A client computer can use the XMLHTTP object to send an arbitrary HTTP request, receive the response, and have the Microsoft® XML Document Object Model (DOM) parse that response.
- QHttp is a class in the Qt library from Troll Tech. Seems to be restricted to plain HTTP. Supports GET, POST and proxy. Asynchronous.
- "a set of routines that implement the FTP protocol. They allow applications to create and access remote files through function calls instead of needing to fork and exec an interactive ftp client program."
- A C++ library for "easy FTP client functionality. It features resuming of up- and downloads, FXP support, SSL/TLS encryption, and logging functionality."
- Has a URLStream class. This C++ class allow you to download a file using HTTP. See demo/urlfetch.cpp in commoncpp2-1.3.19.tar.gz
- Java HTTP client library.
- A Java HTTP client library written by the Jakarta project.
- "a simple network library. It is written in C, object-oriented, and built upon GLib. It is intended to be easy to use and port". Features a HTTP component. It uses glib, and integrates very well within Gtk+ applications, which require event-driven programming.
Have you tried programming with one of the other libs and care share your experiences? We'd love to make this collection more complete and feature lengthier comments about each lib.
