nginx/tengine sets the cookie attribute in the response header

Modify cookie attributes:

Version one:

header_filter_by_lua '
    local cookies = ngx.header.set_cookie
    if cookies then
        if type(cookies) == "table" then
            for k,v in pairs(cookies) do
                ngx.log(ngx.INFO, "k:"..k..",value:"..v)
                cookies[k] = string.gsub(v, "test", "hello")
                ngx.header.set_cookie = cookies
            end
        else
            ngx.log(ngx.INFO, "cookie:"..cookies)
            local cookiesStr = string.gsub(cookies, "test", "hello")
            ngx.header.set_cookie = cookiesStr
        end
    end
';

Version two:

header_filter_by_lua '
    local cookies = ngx.header["set-cookie"]
    if cookies then
        if type(cookies) == "table" then
            for k,v in pairs(cookies) do
                ngx.log(ngx.INFO, "k:"..k..",value:"..v)
                cookies[k]=string.gsub(v, "test", "hello")
                ngx.header.["set-cookie"] = cookies
            end
        else
            ngx.log(ngx.INFO, "cookies:"..cookies)
            local cookiesStr = string.gsub(cookies, "test", "hello")
            ngx.header.["set-cookie"] = cookiesStr
        end
    end
';

Description:

 

1. The above example searches for the "test" string in the cookie attribute in the response header, and replaces it with the "hello" string when found.

2. There are multiple same attributes in the response header: if type(cookies) == "table" then