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waf: remove transfer-encoding header if set #140

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Merged
blotus merged 1 commit into from
May 6, 2026
Merged

waf: remove transfer-encoding header if set #140

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5 changes: 5 additions & 0 deletions lib/crowdsec.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ local APPSEC_HOST_HEADER = "x-crowdsec-appsec-host"
local APPSEC_VERB_HEADER = "x-crowdsec-appsec-verb"
local APPSEC_URI_HEADER = "x-crowdsec-appsec-uri"
local APPSEC_USER_AGENT_HEADER = "x-crowdsec-appsec-user-agent"
local APPSEC_TRANSFER_ENCODING_HEADER = "x-crowdsec-appsec-transfer-encoding"
local REMEDIATION_API_KEY_HEADER = 'x-api-key'
local METRICS_PERIOD = 900

Expand Down Expand Up @@ -605,6 +606,10 @@ function csmod.AppSecCheck(ip)
if headers["content-length"] == nil then
headers["content-length"] = tostring(#body)
end
if headers["transfer-encoding"] ~= nil then
headers[APPSEC_TRANSFER_ENCODING_HEADER] = headers["transfer-encoding"]
headers["transfer-encoding"] = nil
end
end
else
headers["content-length"] = nil
Expand Down
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