diff options
Diffstat (limited to 'docs/libcurl-the-guide')
| -rw-r--r-- | docs/libcurl-the-guide | 54 |
1 files changed, 43 insertions, 11 deletions
diff --git a/docs/libcurl-the-guide b/docs/libcurl-the-guide index 56b3004ea..9194c9e80 100644 --- a/docs/libcurl-the-guide +++ b/docs/libcurl-the-guide @@ -238,9 +238,9 @@ When It Doesn't Work compiler name and version etc. Getting some in-depth knowledge about the protocols involved is never wrong, - and if you're trying to funny things, you might very well understand libcurl - and how to use it better if you study the appropriate RFC documents at least - briefly. + and if you're trying to do funny things, you might very well understand + libcurl and how to use it better if you study the appropriate RFC documents + at least briefly. Upload Data to a Remote Site @@ -558,22 +558,24 @@ Proxies SSL and Proxies - SSL is for secure point-to-point connections. This envolves strong + SSL is for secure point-to-point connections. This involves strong encryption and similar things, which effectivly makes it impossible for a - proxy to operate as a "man in between" which the proxy's task is as + proxy to operate as a "man in between" which the proxy's task is, as previously discussed. Instead, the only way to have SSL work over a HTTP proxy is to ask the proxy to tunnel trough everything without being able - to check the traffic. + to check or fiddle with the traffic. Opening an SSL connection over a HTTP proxy is therefor a matter of asking the proxy for a straight connection to the target host on a specified - port. This is made with the HTTP request CONNECT. + port. This is made with the HTTP request CONNECT. ("please mr proxy, + connect me to that remote host"). Because of the nature of this operation, where the proxy has no idea what - kind of data that is passed in and out through this tunnel, this - effectively breaks some of the pros a proxy might offer, such as caching. - Many organizations prevent this kind of tunneling to other destination - port numbers than 443 (which is the default HTTPS port number). + kind of data that is passed in and out through this tunnel, this breaks + some of the very few advantages that come from using a proxy, such as + caching. Many organizations prevent this kind of tunneling to other + destination port numbers than 443 (which is the default HTTPS port + number). Tunneling Through Proxy @@ -595,6 +597,11 @@ Proxies curl_easy_setopt(easyhandle, CURLOPT_HTTPPROXYTUNNEL, TRUE); + In fact, there might even be times when you want to do plain HTTP + operations using a tunnel like this, as it then enables you to operate on + the remote server instead of asking the proxy to do so. libcurl will not + stand in the way for such innovative actions either! + Proxy Auto-Config Netscape first came up with this. It is basicly a web page (usually using @@ -621,6 +628,28 @@ Proxies - Ask your admins to stop this, for a static proxy setup or similar. +Persistancy Is The Way to Happiness + + [ re-use connections, options that control/disable this, the effect on + protocols such as FTP, why this is Good For You ] + + +Customizing Operations + + [ custom requests, custom headers, replacing headers, custom FTP commands + before transfer, after transfer and without transfer ] + + +Headers Equal Fun + + [ use the header callback for HTTP, FTP etc ] + + +Post Transfer Information + + [ curl_easy_getinfo ] + + Security Considerations [ ps output, netrc plain text, plain text protocols / base64 ] @@ -628,9 +657,12 @@ Security Considerations SSL, Certificates and Other Tricks + [ seeding, passwords, keys, certificates, ENGINE, ca certs ] + Future + [ multi interface, sharing between handles, mutexes, pipelining ] ----- |