mirror of
https://github.com/EtherDream/jsproxy
synced 2024-11-21 17:37:58 +00:00
28 lines
648 B
Lua
28 lines
648 B
Lua
-- ngx.arg[1] => chunk
|
||
-- ngx.arg[2] => eof
|
||
|
||
|
||
-- 大文件只返回首块 hash（用户从廉价带宽获取内容）
|
||
if ngx.ctx._switched then
|
||
local chunk = ngx.arg[1]
|
||
ngx.arg[1] = #chunk .. ',' .. ngx.crc32_long(chunk)
|
||
ngx.arg[2] = true
|
||
return
|
||
end
|
||
|
||
|
||
-- 计算 HTTP 返回数据的 hash（用于统计）
|
||
if ngx.ctx._sha256 == nil then
|
||
local resty_sha256 = require 'resty.sha256'
|
||
ngx.ctx._sha256 = resty_sha256:new()
|
||
end
|
||
|
||
if ngx.arg[2] then
|
||
local digest = ngx.ctx._sha256:final()
|
||
digest = digest:sub(1, 16)
|
||
|
||
local str = require 'resty.string'
|
||
ngx.var._bodyhash = str.to_hex(digest)
|
||
else
|
||
ngx.ctx._sha256:update(ngx.arg[1])
|
||
end |