- Craig A West brought us: libcurl now defaults to do CONNECT with HTTP

version 1.1 instead of 1.0 like before. This change also introduces the new
  proxy type for libcurl called 'CURLPROXY_HTTP_1_0' that then allows apps to
  switch (back) to CONNECT 1.0 requests. The curl tool also got a --proxy1.0
  option that works exactly like --proxy but sets CURLPROXY_HTTP_1_0.

  I updated all test cases cases that use CONNECT and I tried to do some using
  --proxy1.0 and some updated to do CONNECT 1.1 to get both versions run.

docs/MANUAL

@@ -141,6 +141,9 @@ PROXY
 
         curl --noproxy localhost,get.this -x my-proxy:888 http://www.get.this/
 
+ If the proxy is specified with --proxy1.0 instead of --proxy or -x, then
+ curl will use HTTP/1.0 instead of HTTP/1.1 for any CONNECT attempts.
+
  curl also supports SOCKS4 and SOCKS5 proxies with --socks4 and --socks5.
 
  See also the environment variables Curl support that offer further proxy

docs/curl.1

@@ -903,6 +903,13 @@ with a remote host. (Added in 7.17.1)
 .IP "--proxy-ntlm"
 Tells curl to use HTTP NTLM authentication when communicating with the given
 proxy. Use \fI--ntlm\fP for enabling NTLM with a remote host.
+.IP "--proxy1.0 <proxyhost[:port]>"
+Use the specified HTTP 1.0 proxy. If the port number is not specified, it is
+assumed at port 1080.
+
+The only difference between this and the HTTP proxy option (\fI-x/--proxy\fP),
+is that attempts to use CONNECT through the proxy will specify an HTTP 1.0
+protocol instead of the default HTTP 1.1.
 .IP "-p/--proxytunnel"
 When an HTTP proxy is used (\fI-x/--proxy\fP), this option will cause non-HTTP
 protocols to attempt to tunnel through the proxy instead of merely using it to

docs/libcurl/curl_easy_setopt.3

@@ -470,10 +470,10 @@ Pass a long with this option to set the proxy port to connect to unless it is
 specified in the proxy string \fICURLOPT_PROXY\fP.
 .IP CURLOPT_PROXYTYPE
 Pass a long with this option to set type of the proxy. Available options for
-this are \fICURLPROXY_HTTP\fP, \fICURLPROXY_SOCKS4\fP (added in 7.15.2),
-\fICURLPROXY_SOCKS5\fP, \fICURLPROXY_SOCKS4A\fP (added in 7.18.0) and
-\fICURLPROXY_SOCKS5_HOSTNAME\fP (added in 7.18.0). The HTTP type is
-default. (Added in 7.10)
+this are \fICURLPROXY_HTTP\fP, \fICURLPROXY_HTTP_1_0\fP (added in 7.19.4),
+\fICURLPROXY_SOCKS4\fP (added in 7.15.2), \fICURLPROXY_SOCKS5\fP,
+\fICURLPROXY_SOCKS4A\fP (added in 7.18.0) and \fICURLPROXY_SOCKS5_HOSTNAME\fP
+(added in 7.18.0). The HTTP type is default. (Added in 7.10)
 .IP CURLOPT_NOPROXY
 Pass a pointer to a zero terminated string. The should be a comma- separated
 list of hosts which do not use a proxy, if one is specified.  The only