From d7b7580b3913c17b404319cc4c153748d5e59194 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= Date: Fri, 9 Nov 2018 17:42:37 +0100 Subject: Add sendfile support to cowboy_req:stream_body It is now possible to stream one or more sendfile tuples. A simple example of what can now be done would be for example to build a tar file on the fly using the sendfile syscall for sending the files, or to support Range requests with more than one range with the sendfile syscall. When using cowboy_compress_h unfortunately we have to read the file in order to send it. More options will be added at a later time to make sure users don't read too much into memory. This is a new feature however so existing code is not affected. Also rework cowboy_http's data sending to be flatter. --- test/handlers/resp_h.erl | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'test/handlers/resp_h.erl') diff --git a/test/handlers/resp_h.erl b/test/handlers/resp_h.erl index bfcb95c..7a80e75 100644 --- a/test/handlers/resp_h.erl +++ b/test/handlers/resp_h.erl @@ -219,6 +219,23 @@ do(<<"stream_body">>, Req0, Opts) -> Req = cowboy_req:stream_reply(200, Req0), cowboy_req:stream_body(<<"Hello world!">>, nofin, Req), {ok, Req, Opts}; + <<"sendfile">> -> + AppFile = code:where_is_file("cowboy.app"), + AppSize = filelib:file_size(AppFile), + Req = cowboy_req:stream_reply(200, Req0), + cowboy_req:stream_body(<<"Hello ">>, nofin, Req), + cowboy_req:stream_body({sendfile, 0, AppSize, AppFile}, nofin, Req), + cowboy_req:stream_body(<<" interspersed ">>, nofin, Req), + cowboy_req:stream_body({sendfile, 0, AppSize, AppFile}, nofin, Req), + cowboy_req:stream_body(<<" world!">>, fin, Req), + {ok, Req, Opts}; + <<"sendfile_fin">> -> + AppFile = code:where_is_file("cowboy.app"), + AppSize = filelib:file_size(AppFile), + Req = cowboy_req:stream_reply(200, Req0), + cowboy_req:stream_body(<<"Hello! ">>, nofin, Req), + cowboy_req:stream_body({sendfile, 0, AppSize, AppFile}, fin, Req), + {ok, Req, Opts}; _ -> %% Call stream_body without initiating streaming. cowboy_req:stream_body(<<0:800000>>, fin, Req0), -- cgit v1.2.3