Previously c2s was free to generate data to send in unlimited manner, and
just generate queue of messages that are waiting to be send. This could lead to
hitting timouts in stream management ack handling (if c2s generate lot of
packages, after which <r> request was sent, client could even not receive it
before timeout was triggered on server waiting for corresponding <a>).
This changes makes c2s process wait for data being sent to tcp socket
associated with websocket connection, which should help with this problem.
The header consisted of too many unrelated stuff and macros misuse.
Some stuff is moved into scram.hrl and type_compat.hrl.
All macros have been replaced with the corresponding function calls.
TODO: probably type_compat.hrl is not even needed anymore since
we support only Erlang >= OTP 17.5
Due to historical reasons, ejabberd loads the whole file/data
into the memory when serving an HTTP request. This is now improved:
1) For GET requests ejabberd uses sendfile(2) if the underlying
connection is HTTP and falls back to read/write loop with 64kb
buffer for HTTPS connections. This type of requests are handled
by mod_http_fileserver, mod_http_upload, ejabberd_captcha, etc
2) POST requests are now limited to 20Mb and are fully downloaded
into the memory for further processing (by ejabberd_web_admin,
mod_bosh, etc)
3) PUT requests (e.g. for mod_http_upload) are handled by read/write
loop with 64kb buffer
Use crypto:hash/2 function instead of ones from p1_sha.
This function exists since commit
erlang/otp@208f9ad382 and also implemented
as NIF, so I believe it's safe to use it.
Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
RFC 6455 says that the client's opening handshake includes an Upgrade
header field "containing the value 'websocket', treated as an ASCII
case-insensitive value."
Closes#510.
