HTTP request smuggling
Content-Length (CL)
POST / HTTP/1.1
Host: example.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 27
param1=value1¶m2=value2Transfer-Encoding (TE)
POST / HTTP/1.1
Host: example.com
Content-Type: application/x-www-form-urlencoded
Transfer-Encoding: chunked
1d
param1=value1¶m2=value2
0
CL.TE
TE.TE
TE.CL
HTTP/2 downgrading
H2.CL / CL.0
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