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Contact Us Post Here to Contact Site Administrators and Moderators UNIX.com response times Post 303005614 by bakunin on Friday 20th of October 2017 07:13:00 AM

10-20-2017

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Update: here is a document explaining why HTTPS is faster than HTTP.

It boils down to a Google-developed additional session layer (SPDY) from which only HTTPS profits. Basically it is not HTTPS vs. HTTP but multiplexed sessions over a single TCP connection versus unmultiplexed sessions. It would be possible to do HTTP over SPDY too (it is just not done). HTTP2 is basically SPDY standardised and further developed.

In principle HTTP is slightly faster than HTTPS: there are caching facilities so that not every retransmission has to be originated by the client. HTTPS lacks that because relaying stations cannot read what they transmit.

How SPDY speeds up things is especially via the session multiplexing. This gains lots of time because of the delayed TCP-ack, which takes 500ms.

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curlopt_proxytype

CURLOPT_PROXYTYPE(3)					     curl_easy_setopt options					      CURLOPT_PROXYTYPE(3)

NAME

       CURLOPT_PROXYTYPE - proxy protocol type

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYTYPE, long type);

DESCRIPTION

       Pass one of the values below to set the type of the proxy.

	      CURLPROXY_HTTP
		     HTTP Proxy. Default.

	      CURLPROXY_HTTPS
		     HTTPS Proxy. (Added in 7.52.0 for OpenSSL, GnuTLS and NSS)

	      CURLPROXY_HTTP_1_0
		     HTTP 1.0 Proxy. This is very similar to CURLPROXY_HTTP except it uses HTTP/1.0 for any CONNECT tunnelling. It does not change
		     the HTTP version of the actual HTTP requests, controlled by CURLOPT_HTTP_VERSION(3).

	      CURLPROXY_SOCKS4
		     SOCKS4 Proxy.

	      CURLPROXY_SOCKS4A
		     SOCKS4a Proxy. Proxy resolves URL hostname.

	      CURLPROXY_SOCKS5
		     SOCKS5 Proxy.

	      CURLPROXY_SOCKS5_HOSTNAME
		     SOCKS5 Proxy. Proxy resolves URL hostname.

       Often it is more convenient to specify the proxy type with the scheme part of the CURLOPT_PROXY(3) string.

DEFAULT

       CURLPROXY_HTTP

PROTOCOLS

       Most

EXAMPLE

       TODO

AVAILABILITY

       Always

RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_PROXY(3), CURLOPT_PROXYPORT(3),

libcurl 7.54.0							 February 06, 2017					      CURLOPT_PROXYTYPE(3)