FunctionClauseError no function clause matching in :hackney_response.stream_body_recv/2

[spyrbri]

Hello, after upgrading from 1.18.1 to 1.19.1 we started getting this error.

It happens randomly. One request may pass through but the next may fail.

FunctionClauseError: no function clause matching in :hackney_response.stream_body_recv/2
:hackney_response.stream_body_recv/2 (hackney)(/app/deps/hackney/src/hackney_response.erl:169)
:hackney_response.read_body/3 (hackney)(/app/deps/hackney/src/hackney_response.erl:312)
anonymous fn/1 in :hackney.body/1 (hackney)(/app/deps/hackney/src/hackney.erl:510)
Tesla.Adapter.Hackney.handle/1 (tesla)(lib/tesla/adapter/hackney.ex:102)
Tesla.Adapter.Hackney.call/2 (tesla)(lib/tesla/adapter/hackney.ex:33)
Tesla.Middleware.FollowRedirects.redirect/3 (tesla)(lib/tesla/middleware/follow_redirects.ex:46)
Tesla.Middleware.JSON.call/3 (tesla)(lib/tesla/middleware/json.ex:54)

This is an example of a failed request

:hackney_response.stream_body_recv("", 
  {:client, {1699, 521127, 152004}, 
   {:metrics_ng, :metrics_dummy}, 
   :hackney_tcp, '[ANONYMIZED_HOST]', 80, 
   "[ANONYMIZED_HOST]", [recv_timeout: 5000], 
   #Port<0.3196>, 
   {:default, #Reference<0.3739800695.3888119809.153571>, 
    {:connection, :hackney_tcp, '[ANONYMIZED_HOST]', 80, 109744905, false}, 
    #PID<0.861.0>, 
    :hackney_tcp}, 
   #Reference<0.3739800695.3888119809.153571>, 
   true, 
   :hackney_pool, 
   5000, 
   false, 
   5, 
   false, 
   5, 
   nil, 
   nil, 
   {:hparser, :response, 4096, 10, 0, 
    :on_trailers, "\r", {1, 1}, "", [], :undefined, 
    "chunked", "keep-alive", "application/json; charset=utf-8", "", :done}, 
   {16, 
    {:dict, 16, 16, 16, 8, 80, 48, 
     {[], [], [], [], [], [], [], [], [], [], [], [], [], [], [], []}, 
     {{[], 
       [["server-timing", {15, "Server-Timing", "total;dur=106.72569298185408"}]], 
       ["x-content-type-options", {6, "X-Content-Type-Options", "nosniff"}], 
      [], 
      [], 
      [["etag", {11, "ETag", "W/\"1217c0895af4af2440e1ea3724ebe820\""}]], 
       ["x-permitted-cross-domain-policies", {8, "X-Permitted-Cross-Domain-Policies", "none"}], 
       ["cache-control", {12, "Cache-Control", "max-age=0, private, must-revalidate"}]], 
      [["x-download-options", {7, "X-Download-Options", "noopen"}]], 
      [], 
      [["content-type", {1, "Content-Type", ...}], 
       ["transfer-encoding", {2, ...}]], 
      [["referrer-policy", {9, ...}]], 
      [["connection", {...}], ["x-frame-options", ...], [...]], 
      [], 
      [], 
      []}}}}, 
   :connected, 
   :waiting, 
   nil, 
   :normal, 
   false, 
   false, 
   false, 
   :undefined, 
   false, 
   &:hackney_request.send/2, 
   :waiting, 
   nil, 
   4096, 
   "", 
   [], 
   {1, 1}, 
   :undefined, 
   "chunked", 
   nil, 
   "POST", 
   "/path", 
   nil})

Do you have any idea why this can be happening?

[TeoDiaz]

I have the same issue with version 1.18.2.

Logs point me out to this line

[benoitc]

Did you try latest version ? This issue should be solved but let me know.

[TeoDiaz]

Hi @benoitc , This morning I just update to the 1.20.1 and since then I have not seen the error again, so I think it's solved.

Is there any place were we can see the Changelog or what fixes where implemented on each version?

[benoitc]

The change log is here : https://github.com/benoitc/hackney/blob/master/NEWS.md

[TeoDiaz]

Thanks a lot, so I can confirm that this issue was fixed by my side, let see if @spyrbri can update the version.

Thanks for the response.

[spyrbri]

It looks ok for us too, thank you! 🎆