curl
A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
Debug cURL issues directly from source code. Learn to implement the CURLOPT_DEBUGFUNCTION callback for detailed protocol data and connection insights. Unlock comprehensive troubleshooting.
How curl Interacts with SSL/TLS Libraries: Inside the vtls AbstractionDiscover how curl interacts with SSL/TLS libraries using the vtls abstraction layer. Learn about its backend-agnostic approach and unified interface for cryptographic implementations.
How to Run curl Tests Locally: A Complete Guide to the Automated Test SuiteLearn to run curl tests locally with this guide. Install dependencies, build from source, and execute `make test` to start your automated testing for the curl repository.
Structure of curl's Test Suite: A Deep Dive into the Perl‑Based Testing HarnessExplore the structure of curl's test suite, a compelling Perl framework. Learn how testcurl.pl and runtests.pl drive tests, verify protocols, and report results effectively.
How curl Authentication Methods Work: A Deep Dive into the libcurl Source CodeExplore how curl handles authentication methods by diving into the libcurl source code. Understand its state machine for secure scheme selection.
Where Is curl's Error Handling Implemented? A Deep Dive into libcurl's Error InfrastructureExplore curl error handling implementation. Discover CURLcode, message translation in strerror.c, and runtime formatting via Curl_failf() in curl's libcurl.
How to Enable Specific Features During curl Compilation: SSL, Protocols, and Debugging OptionsLearn how to enable specific features like SSL, protocols, and debugging during curl compilation. Use configure script flags like --with-<library> and --enable-<feature> for custom builds.
Key Dependencies for Building curl: A Complete Guide to Optional and Required LibrariesDiscover essential curl build dependencies. Learn about required TLS backends and optional libraries for compression, async DNS, SSH, HTTP/2, and HTTP/3.
Where Is the Code for curl's Network I/O? A Deep Dive into libcurl's Connection ArchitectureDiscover where curl's network I/O code resides. This deep dive explores libcurl's connection architecture, focusing on cfilters.c and select.c for efficient data transfer.
How curl's Header Files Are Organized: Public API vs Internal ImplementationUnderstand how curl's header files are organized. Discover the separation between public API (include/curl/) and internal implementation (lib/) for clear development.
What Is the Include Directory in curl? Public API Headers ExplainedDiscover the purpose of the include directory in curl. Understand how it provides the public C API headers for libcurl, enabling seamless integration with external applications.
How to Contribute to the curl Project Source Code: A Complete Developer GuideLearn how to contribute to the curl project source code. Fork the repo, follow coding style, add tests, and submit a pull request to join the development.
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