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trurl is a tool in a similar spirit of tr but for URLs. Here, 'tr' stands for translate or transpose. trurl is a command line tool that parses and manipulates URLs, designed to help shell script authors everywhere. URLs are tricky to parse and there are numerous security problems in software because of this. trurl wants to help soften this problem by taking away the need for script and command lin

Buy commercial curl support from WolfSSL. We help you work out your issues, debug your libcurl applications, use the API, port to new platforms, add new features and more. With a team lead by the curl founder himself. Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ] [ by messages with attachments ] From: Daniel Stenberg via curl-users <curl-users_at_lists.haxx.s

C mistakes Flaws listed as "C mistakes" are vulnerabilities that we deem are likely to not have happened should we have used a memory-safe language rather than C. The C mistakes are divided into the following areas: OVERFLOW, OVERREAD, DOUBLE_FREE, USE_AFTER_FREE, NULL_MISTAKE, UNINIT and BAD_FREE. Retracted security vulnerabilities Issues no longer considered curl security problems: CVE-2019-1560

HTTP/2 with curl HTTP/2 Spec http2 explained Build prerequisites nghttp2 OpenSSL, libressl, BoringSSL, GnuTLS, mbedTLS, wolfSSL or Schannel with a new enough version. nghttp2 libcurl uses this 3rd party library for the low level protocol handling parts. The reason for this is that HTTP/2 is much more complex at that layer than HTTP/1.1 (which we implement on our own) and that nghttp2 is an already

Changes: curl: add write-out variable 'tls_earlydata' curl: make --url support a file with URLs gnutls: set priority via --ciphers IMAP: add CURLOPT_UPLOAD_FLAGS and --upload-flags lib: add CURLFOLLOW_OBEYCODE and CURLFOLLOW_FIRSTONLY OpenSSL/quictls: add support for TLSv1.3 early data rustls: add support for CERTINFO rustls: add support for SSLKEYLOGFILE rustls: support ECH w/ DoH lookup for conf

[1] = Mostly the same feature set is also provided by LibreSSL, BoringSSL, AWS-LC and quictls [2] = OpenSSL 3.2 has a QUIC stack that curl works with experimentally. The OpenSSL forks LibreSSL, BoringSSL, AWS-LC and quictls support the QUIC API that curl works with using ngtcp2. [8] = Via external engine_pkcs11; Glossary of Terms Supported: "no" here means the TLS library is still experimental in

From: Nick Zitzmann <nick_at_chronosnet.com> Date: Tue, 22 Oct 2013 18:15:23 -0500 Hi all! If you're reading this, I'm guessing either you're subscribed to this list, or you just upgraded to Mavericks and you use Apple's curl and you noticed something that used to work doesn't and you're searching with Google/DuckDuckGo/etc. for information on what happened. Well, if you're in the latter category:

The Art Of Scripting HTTP Requests Using curl Background This document assumes that you are familiar with HTML and general networking. The increasing amount of applications moving to the web has made "HTTP Scripting" more frequently requested and wanted. To be able to automatically extract information from the web, to fake users, to post or upload data to web servers are all important tasks today.

Name curl_easy_setopt - set options for a curl easy handle Synopsis#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLoption option, parameter); Description curl_easy_setopt is used to tell libcurl how to behave. By setting the appropriate options, the application can change libcurl's behavior. All options are set with an option followed by a parameter. That parameter can be a long

This is the original spec once found on netscape.com but since they decided to not keep the original URL alive and working, we host it here and point to this URL instead. Go to curl.se for more curl info PERSISTENT CLIENT STATE HTTP COOKIES Preliminary Specification - Use with caution Cookies are a general mechanism which server side connections (such as CGI scripts) can use to both store and retr

curl tutorial Simple Usage Get the main page from a web-server: curl https://www.example.com/ Get a README file from an FTP server: curl ftp://ftp.example.com/README Get a webpage from a server using port 8000: curl http://www.example.com:8000/ Get a directory listing of an FTP site: curl ftp://ftp.example.com/ Get the all terms matching curl from a dictionary: curl dict://dict.example.com/m:curl

How to install curl and libcurl Installing Binary Packages Lots of people download binary distributions of curl and libcurl. This document does not describe how to install curl or libcurl using such a binary package. This document describes how to compile, build and install curl and libcurl from source code. Building using vcpkg You can download and install curl and libcurl using the vcpkg depende

A collection of smaller stand-alone applications using the libcurl API in different ways to show how to use it for different Internet transfer scenarios. Download all examples You can also see a list of all libcurl easy options and which example source codes that use them. All examples are written in C, unless specifically mentioned. Index of examples

Missing Name Constraints The converted PEM file only contains the digital signatures for CAs. Several of those CAs have constraints in Firefox (and other browsers) to only be allowed for certain domains and other similar additional conditions. Those constraints are thus not brought along in this cacert file! CA certificate store license The PEM file is only a converted version of the original one

The mentioned tools: wget, wget2, lftp, aria2, httrack, HTTPie, xh 'Fetch' is an integral part of the FreeBSD operating system. * aria2 supports IPv6 only in HTTP(S) download * HTTPie is written in Python + Requests and thus carry their portability and features "In development" - releases or new things done to the project within the last couple of years. Please file a bug report if this table is i

Name curl - transfer a URL Synopsis curl [options / URLs] Description curl is a tool for transferring data from or to a server using URLs. It supports these protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. curl is powered by libcurl for all transfer-related fe

Name libcurl-errors - error codes in libcurl Description This man page includes most, if not all, available error codes in libcurl. Why they occur and possibly what you can do to fix the problem are also included. Curlcode Almost all "easy" interface functions return a CURLcode error code. No matter what, using the curl_easy_setopt option CURLOPT_ERRORBUFFER is a good idea as it gives you a human

Come join us at curl up 2025 on May 3 - 4 in Prague. Attend, speak, sponsor! Free and Open Source Software 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, in A-Z order: Beast (Boost) Beast is a C++ header-only library serving

Come join us at curl up 2025 on May 3 - 4 in Prague. Attend, speak, sponsor! Name libcurl-tutorial - libcurl programming tutorial Objective This document attempts to describe the general principles and some basic approaches to consider when programming with libcurl. The text focuses on the C interface but should apply fairly well on other language bindings as well as they usually follow the C API

Come join us at curl up 2025 on May 3 - 4 in Prague. Attend, speak, sponsor! Read the libcurl API overview and the libcurl tutorial to get a general idea of what libcurl programming is all about. Also, check out the examples. Dig into the Symbols In Versions document to learn in which libcurl releases symbols were added or removed. Every libcurl release is backwards compatible with the previous re

The curl project mostly provides source packages. Other packages are kindly provided by external persons and organizations. Source Archives curl 8.13.0, Released on the 2025-04-02. Changelog for 8.13.0.

libcurl is a free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, HTTP/2, HTTP/3, cookies, user+password

The main documentation is sub divided into several categories. Each category holds a number of documentation pages. The book: Everything curl This is a detailed and totally free book, available online (and as a PDF as a link from there) that explains everything there is to know about curl, libcurl and the associated project. Learn how to use curl. How to use libcurl. How to build them from source

Philosophy 1.1 What is cURL? 1.2 What is libcurl? 1.3 What is curl not? 1.4 When will you make curl do XXXX ? 1.5 Who makes curl? 1.6 What do you get for making curl? 1.7 What about CURL from curl.com? 1.8 I have a problem, who do I mail? 1.9 Where do I buy commercial support for curl? 1.10 How many are using curl? 1.11 Why do you not update ca-bundle.crt 1.12 I have a problem, who can I chat with

TLS Certificate Verification Native vs file based If curl was built with Schannel or Secure Transport support, then curl uses the system native CA store for verification. All other TLS libraries use a file based CA store by default. Verification Every trusted server certificate is digitally signed by a Certificate Authority, a CA. In your local CA store you have a collection of certificates from t

What is curl used for? curl is used in command lines or scripts to transfer data. curl is also libcurl, used in cars, television sets, routers, printers, audio equipment, mobile phones, tablets, medical devices, settop boxes, computer games, media players and is the Internet transfer engine for countless software applications in over twenty billion installations. curl is used daily by virtually ev