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author | Loïc Hoguin <[email protected]> | 2018-11-09 17:42:37 +0100 |
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committer | Loïc Hoguin <[email protected]> | 2018-11-09 17:42:37 +0100 |
commit | d7b7580b3913c17b404319cc4c153748d5e59194 (patch) | |
tree | 3026f38e4bcfdcb26d067a4e5aec6d401700c3cc /test/handlers/compress_h.erl | |
parent | 29043aa7b4d11e377bc76d453f592ea5a6df1f43 (diff) | |
download | cowboy-d7b7580b3913c17b404319cc4c153748d5e59194.tar.gz cowboy-d7b7580b3913c17b404319cc4c153748d5e59194.tar.bz2 cowboy-d7b7580b3913c17b404319cc4c153748d5e59194.zip |
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.
Diffstat (limited to 'test/handlers/compress_h.erl')
-rw-r--r-- | test/handlers/compress_h.erl | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/test/handlers/compress_h.erl b/test/handlers/compress_h.erl index 4b4dbe7..1509d82 100644 --- a/test/handlers/compress_h.erl +++ b/test/handlers/compress_h.erl @@ -27,7 +27,30 @@ init(Req0, State=stream_reply) -> <<"large">> -> stream_reply(#{}, Req0); <<"content-encoding">> -> - stream_reply(#{<<"content-encoding">> => <<"compress">>}, Req0) + stream_reply(#{<<"content-encoding">> => <<"compress">>}, Req0); + <<"sendfile">> -> + Data = lists:duplicate(10000, $a), + AppFile = code:where_is_file("cowboy.app"), + Size = filelib:file_size(AppFile), + Req1 = cowboy_req:stream_reply(200, Req0), + %% We send a few files interspersed into other data. + cowboy_req:stream_body(Data, nofin, Req1), + cowboy_req:stream_body({sendfile, 0, Size, AppFile}, nofin, Req1), + cowboy_req:stream_body(Data, nofin, Req1), + cowboy_req:stream_body({sendfile, 0, Size, AppFile}, nofin, Req1), + cowboy_req:stream_body(Data, fin, Req1), + Req1; + <<"sendfile_fin">> -> + Data = lists:duplicate(10000, $a), + AppFile = code:where_is_file("cowboy.app"), + Size = filelib:file_size(AppFile), + Req1 = cowboy_req:stream_reply(200, Req0), + %% We send a few files interspersed into other data. + cowboy_req:stream_body(Data, nofin, Req1), + cowboy_req:stream_body({sendfile, 0, Size, AppFile}, nofin, Req1), + cowboy_req:stream_body(Data, nofin, Req1), + cowboy_req:stream_body({sendfile, 0, Size, AppFile}, fin, Req1), + Req1 end, {ok, Req, State}. |