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Assertion on content-length mismatch #21

zevv opened this issue Jan 23, 2019 · 1 comment


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commented Jan 23, 2019

Reproduce with

import options, asyncdispatch

import httpbeast

proc onRequest(req: Request): Future[void] =
  if req.httpMethod == some(HttpPost):
    case req.path.get()
    of "/":
      req.send("Hello World")


Then send a faulty HTTP request with:

curl -v -XPOST -d/etc/services -H "Content-Length: 12"

Results in:

httpbeast.nim(421)       run
httpbeast.nim(414)       run
httpbeast.nim(287)       eventLoop
httpbeast.nim(203)       processEvents
httpbeast.nim(140)       bodyInTransit
system.nim(3877)         failedAssertImpl
system.nim(3870)         raiseAssert
system.nim(2916)         sysFatal
Error: unhandled exception: /home/idoornekamp/.nimble/pkgs/httpbeast-0.2.1/httpbeast.nim(140, 9) `not
  trueLen < bodyLen`  [AssertionError]```

IMHO asserting or throwing on faulty remote data is not right here.


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commented Jan 23, 2019

Indeed :)

This is why you should put nginx in front of httpbeast, for now at least.

We need to properly fuzz httpbeast and fix this issues, with hopefully as little performance regressions as possible.

@dom96 dom96 added the bug label Jan 23, 2019
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