{"id":279,"date":"2008-02-14T10:44:46","date_gmt":"2008-02-14T09:44:46","guid":{"rendered":"http:\/\/daniel.haxx.se\/blog\/2008\/02\/14\/libcurl-built-with-yassl\/"},"modified":"2008-08-21T11:04:20","modified_gmt":"2008-08-21T09:04:20","slug":"libcurl-built-with-yassl","status":"publish","type":"post","link":"https:\/\/daniel.haxx.se\/blog\/2008\/02\/14\/libcurl-built-with-yassl\/","title":{"rendered":"libcurl built with yassl"},"content":{"rendered":"<p><a href=\"http:\/\/www.yassl.com\/\">yassl<\/a> is a (in comparison) small SSL\/TLS library that libcurl can be built to use instead of using one of the other SSL\/TLS libraries libcurl supports (<a href=\"http:\/\/www.openssl.org\/\">OpenSSL<\/a>, <a href=\"http:\/\/www.gnu.org\/software\/gnutls\/\">GnuTLS<\/a>, <a href=\"http:\/\/www.mozilla.org\/projects\/security\/pki\/nss\/\">NSS<\/a> and QSSL). However, yassl differs somewhat from the others in the way that it provides an OpenSSL-emulating API layer so that in libcurl we pretty much use exactly the same code for OpenSSL as we do for yassl.<a href=\"http:\/\/curl.haxx.se\/libcurl\/\"><img decoding=\"async\" src=\"http:\/\/daniel.haxx.se\/blog\/wp-content\/uploads\/2007\/09\/ds-libcurlicon.png\" border=\"0\" alt=\"libcurl\" hspace=\"10\" vspace=\"10\" align=\"right\" \/><\/a><\/p>\n<p>yassl claimed this libcurl support for several years ago and indeed libcurl builds fine with it and you can even do some basic SSL operations with it, but <a href=\"http:\/\/curl.haxx.se\/mail\/lib-2008-02\/0093.html\">the emulation is just not good enough<\/a> to let the curl test suite go through so lots of stuff breaks when libcurl is built with yassl.<\/p>\n<p>I did this same test 15 months ago and it had roughly the same problems then.<\/p>\n<p>As far as I know, the other three main libraries are much more stable (the QSSL\/QsoSSL library is only available on the AS\/400 platform and thus I don&#8217;t personally know much about how it performs) and thus they remain the libraries I recommend users to select from if they want something that&#8217;s proven working.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>yassl is a (in comparison) small SSL\/TLS library that libcurl can be built to use instead of using one of the other SSL\/TLS libraries libcurl supports (OpenSSL, GnuTLS, NSS and QSSL). However, yassl differs somewhat from the others in the way that it provides an OpenSSL-emulating API layer so that in libcurl we pretty much &hellip; <a href=\"https:\/\/daniel.haxx.se\/blog\/2008\/02\/14\/libcurl-built-with-yassl\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">libcurl built with yassl<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[64,232,28,44,193,43,63],"class_list":["post-279","post","type-post","status-publish","format-standard","hentry","category-curl","tag-bugs","tag-gnutls","tag-libcurl","tag-nss","tag-openssl","tag-ssl","tag-yassl"],"_links":{"self":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts\/279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/comments?post=279"}],"version-history":[{"count":0,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts\/279\/revisions"}],"wp:attachment":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/media?parent=279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/categories?post=279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/tags?post=279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}