4.16 My HTTP POST or PUT requests are slow!

  4.13 Why is curl -R on Windows one hour off?

  4.14 Redirects work in browser but not with curl!

  4.15 FTPS doesn't work

  4.16 My HTTP POST or PUT requests are slow!

 5. libcurl Issues

  5.1 Is libcurl thread-safe?

  mandated by RFC4217. This kind of connection then of course uses the

  standard FTP port 21 by default.

  4.16 My HTTP POST or PUT requests are slow!

  libcurl makes all POST and PUT requests (except for POST requests with a

  very tiny request body) use the "Expect: 100-continue" header. This header

  allows the server to deny the operation early so that libcurl can bail out

  already before having to send any data. This is useful in authentication

  cases and others.

  However, many servers don't implement the Expect: stuff properly and if the

  server doesn't respond (positively) within 1 second libcurl will continue

  and send off the data anyway.

  You can disable libcurl's use of the Expect: header the same way you disable

  any header, using -H / CURLOPT_HTTPHEADER, or by forcing it to use HTTP 1.0.

5. libcurl Issues