Software / code / prosody
Diff
plugins/mod_http_file_share.lua @ 11564:60e31c9ece57
mod_http_file_share: Support download resumption via Range requests
Only a starting point is supported due to the way response:send_file()
sends everything it gets from the provided file handle but does not have
any way to specify how much to read.
This matches what Conversations appears to be doing.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 16 May 2021 16:52:59 +0200 |
| parent | 11503:7adda14945ad |
| child | 11568:d5360307a99d |
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--- a/plugins/mod_http_file_share.lua Wed May 12 01:11:42 2021 +0200 +++ b/plugins/mod_http_file_share.lua Sun May 16 16:52:59 2021 +0200 @@ -356,6 +356,20 @@ return 410; end + local request_range = request.headers.range; + local response_range; + if request_range then + local range_start, range_end = request_range:match("^bytes=(%d+)%-(%d*)$") + -- Only support resumption, ie ranges from somewhere in the middle until the end of the file. + if (range_start and range_start ~= "0" and range_start ~= filesize) and (range_end == "" or range_end == filesize) then + if handle:seek("set", tonumber(range_start)) then + response_range = "bytes "..range_start.."-"..filesize.."/"..filesize; + filesize = string.format("%d", tonumber(filesize)-tonumber(range_start)); + end + end + end + + if not filetype then filetype = "application/octet-stream"; end @@ -369,6 +383,12 @@ response.headers.content_type = filetype; response.headers.content_disposition = string.format("%s; filename=%q", disposition, basename); + if response_range then + response.status_code = 206; + response.headers.content_range = response_range; + end + response.headers.accept_ranges = "bytes"; + response.headers.cache_control = "max-age=31556952, immutable"; response.headers.content_security_policy = "default-src 'none'; frame-ancestors 'none';" response.headers.strict_transport_security = "max-age=31556952";
