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curl-loader
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<h2 id="features">Features</h2> <p>curl-loader is capable of simulating application behavior of hundreds of thousands of <a href="/facts/HTTP/TWtvf7JD">HTTP</a>/<a href="/facts/HTTPS/MSWYz4zo">HTTPS</a> and <a href="/facts/FTP/THuWgzfw">FTP</a>/<a href="/facts/FTPS/6DMVBUCX">FTPS</a> clients, each with its own source IP-address. In contrast to other tools, curl-loader is using real C-written client protocol stacks, namely, <a href="/facts/HTTP/TWtvf7JD">HTTP</a> and <a href="/facts/FTP/THuWgzfw">FTP</a> stacks of <a href="/facts/Libcurl/01m2dW2j">libcurl</a> and <a href="/facts/Transport_Layer_Security/pGy16TnA">TLS</a>/<a href="/facts/Secure_Sockets_Layer/pGy16TnA">SSL</a> of <a href="/facts/OpenSSL/aXvs5fo2">openSSL</a>, and simulates user behavior with support for login and authentication flavors. </p><p>The major features are: </p><p>Running up to 2,500–100,000 and more virtual loading clients, all from a single curl-loader process. Actual number of virtual clients may be several times higher being limited mainly by memory. Each virtual client loads traffic from its "personal" source IP-address, or from the "common" IP-address shared by all clients, or from the IP-addresses shared by some clients where a limited set of shared IP-addresses can be used by a batch of clients. </p> <ul><li>Rampup of the virtual clients number at loading start in either automatic or manual mode;</li> <li><a href="/facts/IPv4/bnQ5MEqm">IPv4</a> and <a href="/facts/IPv6/d4dg7kIL">IPv6</a> addresses and URIs;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> 1.1. GET, POST, PUT, DELETE, HEAD including file upload operations;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> user authentication login with POST or GET+POST methods. Unique configurable username and password for each virtual client as well as configurable posted string (post-forms) are the options. Another option is loading of users with credentials from a tokens text file;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> POST/GET forms with up to 16 tokens filled from a tokens text file;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> user logoff with POST, GET+POST, or GET (cookies); POST logoff with configurable posted string (post-forms);</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> multipart form data POST-ing as in RFC1867;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> Web and Proxy Authentication (HTTP 401 and 407 responses) with Basic, Digest (RFC2617) and NTLM;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> 3xx redirections with unlimited number of redirections;</li> <li><a href="/facts/HTTP/TWtvf7JD">HTTP</a> cookies and <a href="/facts/Domain_Name_System/rfxdWFsj">DNS</a> caches;</li> <li><a href="/facts/FTP/THuWgzfw">FTP</a> passive and active, <a href="/facts/FTP/THuWgzfw">FTP</a> upload;</li> <li>Full customization of client request <a href="/facts/HTTP/TWtvf7JD">HTTP</a>/<a href="/facts/FTP/THuWgzfw">FTP</a> headers ;</li> <li>Transfer limit rate for each client download or upload operation on a per url bases;</li> <li><a href="/facts/URL/pPD5g7Wq">URL</a> fetching probability;</li> <li><a href="/facts/Transmission_Control_Protocol/WW4sPrt9">TCP</a> connections reuse or re-establishment on a per <a href="/facts/URL/pPD5g7Wq">URL</a> bases;</li> <li>Unlimited configurable number of URLs. Mixing of <a href="/facts/HTTP/TWtvf7JD">HTTP</a>, <a href="/facts/HTTPS/MSWYz4zo">HTTPS</a>, <a href="/facts/FTP/THuWgzfw">FTP</a> and <a href="/facts/FTPS/6DMVBUCX">FTPS</a> urls in a single batch (test plan) configuration;</li> <li>Connection establishment timers for each URL;</li> <li><a href="/facts/URL/pPD5g7Wq">URL</a> completion timers monitoring and enforcement for each client;</li> <li>Inter/after URL "sleeping" timers, including random timers taken from a configurable interval;</li> <li>Logfile with tracing activities for each virtual client;</li> <li>Logging of responses (headers and bodies) to files;</li> <li>Pre-cooked batch configuration (test plan) examples;</li> <li>Load Status at console and with output to file;</li> <li>Status and statistics for each virtual client which are logged to file;</li></ul> <p>The goal of curl-loader project is to deliver a powerful and flexible <a href="/facts/Open-source_software/HzTaB8E9">open-source</a> <a href="/facts/Software_performance_testing/qtlCrHme">software performance testing</a> client-side solution as a real alternative to Spirent Avalanche and IXIA IxLoad. Curl-loader normally works in pair with <a href="/facts/Nginx/AlTYUuTp">nginx</a> or <a href="/facts/Apache_web_server/tcmWYYUq">Apache web server</a> as the server-side. </p><p>The tool is developed and maintained by Dr. Robert Iakobashvili and Michael Moser. </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Software_performance_testing/qtlCrHme">Software performance testing</a></li> <li><a href="/facts/Performance_Engineering/opjKPvhH">Performance Engineering</a></li> <li><a href="/facts/Software_testing/VoXzG9Tb">Software testing</a></li></ul> <ul><li><a href="https://lwn.net/Articles/241866/">"curl-loader launched"</a>. <i><a href="/facts/Linux_Weekly_News/8uTsltvM">Linux Weekly News</a></i>. 2007-07-16. Retrieved August 7, 2007.</li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://curl-loader.sourceforge.net/">Official website</a></li></ul>