Catching ECONNRESET error codes

[JakubPorubcansky]

I have an HTTP server written in Julia. Sometimes when sending a request it fails with: connection reset by peer (ECONNRESET).

It is similar to issues #547 and #763. Those were fixed in #764 by adding more error codes to check. However, when I look into the current Server.jl code I do not see checking of these codes anymore. I noticed there was some refactor (mainly 170725b) done in the code recently. Is it possible that the bug could reappear after the refactor? Or is now the error code checking handled somewhere else?

Full error

IOError: read: connection reset by peer (ECONNRESET)
Stacktrace:
  [1] try_with_timeout(f::HTTP.TimeoutRequest.var\"#3#8\"{Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{4, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception), Tuple{Nothing, Nothing, Int64, Bool}}}, HTTP.Streams.Stream{HTTP.Messages.Response, HTTP.ConnectionPool.Connection}, HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}, shouldtimeout::HTTP.TimeoutRequest.var\"#4#9\"{Int64, HTTP.ConnectionPool.Connection}, delay::Int64, iftimeout::HTTP.TimeoutRequest.var\"#5#10\"{HTTP.ConnectionPool.Connection})
    @ HTTP.Exceptions /home/timuser/.julia/packages/HTTP/PesRN/src/Exceptions.jl:56
  [2] #1#2
    @ /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/TimeoutRequest.jl:20 [inlined]
  [3] (::HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}})(req::HTTP.Messages.Request  proxy::Nothing, socket_type::Type, readtimeout::Int64, kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{4, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception), Tuple{Nothing, Nothing, Int64, Bool}}})
    @ HTTP.ConnectionRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/ConnectionRequest.jl:109
  [4] (::HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}})(req::HTTP.Messages.Request  canonicalize_headers::Bool, kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{5, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception, :readtimeout), Tuple{Nothing, Nothing, Int64, Bool, Int64}}})
    @ HTTP.CanonicalizeRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/CanonicalizeRequest.jl:17
  [5] (::Base.var\"#76#78\"{Base.var\"#76#77#79\"{ExponentialBackOff, HTTP.RetryRequest.var\"#3#6\"{Int64, HTTP.Messages.Request, Base.RefValue{Int64}}, HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}})(args::HTTP.Messages.Request  kwargs::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{5, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception, :readtimeout), Tuple{Nothing, Nothing, Int64, Bool, Int64}}})
    @ Base ./error.jl:294
  [6] (::HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}})(req::HTTP.Messages.Request  retry::Bool, retries::Int64, retry_non_idempotent::Bool, kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{5, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception, :readtimeout), Tuple{Nothing, Nothing, Int64, Bool, Int64}}})
    @ HTTP.RetryRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/RetryRequest.jl:60
  [7] (::HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}})(req::HTTP.Messages.Request  cookies::Bool, cookiejar::HTTP.Cookies.CookieJar, kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{5, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception, :readtimeout), Tuple{Nothing, Nothing, Int64, Bool, Int64}}})
    @ HTTP.CookieRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/CookieRequest.jl:42
  [8] (::HTTP.ContentTypeDetection.var\"#1#3\"{HTTP.ContentTypeDetection.var\"#1#2#4\"{HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}}}})(req::HTTP.Messages.Request  detect_content_type::Bool, kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{5, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception, :readtimeout), Tuple{Nothing, Nothing, Int64, Bool, Int64}}})
    @ HTTP.ContentTypeDetection /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/ContentTypeRequest.jl:23
  [9] (::HTTP.BasicAuthRequest.var\"#1#3\"{HTTP.BasicAuthRequest.var\"#1#2#4\"{HTTP.ContentTypeDetection.var\"#1#3\"{HTTP.ContentTypeDetection.var\"#1#2#4\"{HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}}}}}})(req::HTTP.Messages.Request  basicauth::Bool, kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{5, Symbol}, NamedTuple{(:iofunction, :decompress, :verbose, :status_exception, :readtimeout), Tuple{Nothing, Nothing, Int64, Bool, Int64}}})
    @ HTTP.BasicAuthRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/BasicAuthRequest.jl:22
 [10] (::HTTP.DefaultHeadersRequest.var\"#1#3\"{HTTP.DefaultHeadersRequest.var\"#1#2#4\"{HTTP.BasicAuthRequest.var\"#1#3\"{HTTP.BasicAuthRequest.var\"#1#2#4\"{HTTP.ContentTypeDetection.var\"#1#3\"{HTTP.ContentTypeDetection.var\"#1#2#4\"{HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}}}}}}}})(req::HTTP.Messages.Request  iofunction::Nothing, decompress::Nothing, kw::Base.Pairs{Symbol, Integer, Tuple{Symbol, Symbol, Symbol}, NamedTuple{(:verbose, :status_exception, :readtimeout), Tuple{Int64, Bool, Int64}}})
    @ HTTP.DefaultHeadersRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/DefaultHeadersRequest.jl:47
 [11] (::HTTP.RedirectRequest.var\"#1#4\"{HTTP.RedirectRequest.var\"#1#2#5\"{HTTP.DefaultHeadersRequest.var\"#1#3\"{HTTP.DefaultHeadersRequest.var\"#1#2#4\"{HTTP.BasicAuthRequest.var\"#1#3\"{HTTP.BasicAuthRequest.var\"#1#2#4\"{HTTP.ContentTypeDetection.var\"#1#3\"{HTTP.ContentTypeDetection.var\"#1#2#4\"{HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}}}}}}}}}})(req::HTTP.Messages.Request  redirect::Bool, redirect_limit::Int64, redirect_method::Nothing, forwardheaders::Bool, response_stream::Nothing, kw::Base.Pairs{Symbol, Integer, Tuple{Symbol, Symbol, Symbol}, NamedTuple{(:verbose, :status_exception, :readtimeout), Tuple{Int64, Bool, Int64}}})
    @ HTTP.RedirectRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/RedirectRequest.jl:25
 [12] #1#2
    @ /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/DebugRequest.jl:22 [inlined]
 [13] (::HTTP.MessageRequest.var\"#1#3\"{HTTP.MessageRequest.var\"#1#2#4\"{HTTP.DebugRequest.var\"#1#4\"{HTTP.DebugRequest.var\"#1#2#5\"{HTTP.RedirectRequest.var\"#1#4\"{HTTP.RedirectRequest.var\"#1#2#5\"{HTTP.DefaultHeadersRequest.var\"#1#3\"{HTTP.DefaultHeadersRequest.var\"#1#2#4\"{HTTP.BasicAuthRequest.var\"#1#3\"{HTTP.BasicAuthRequest.var\"#1#2#4\"{HTTP.ContentTypeDetection.var\"#1#3\"{HTTP.ContentTypeDetection.var\"#1#2#4\"{HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}}}}}}}}}}}}}})(method::String, url::URIs.URI, headers::Vector{Pair{SubString{String}, SubString{String}}}, body::String  response_stream::Nothing, http_version::VersionNumber, kw::Base.Pairs{Symbol, Integer, Tuple{Symbol, Symbol}, NamedTuple{(:status_exception, :readtimeout), Tuple{Bool, Int64}}})
    @ HTTP.MessageRequest /home/timuser/.julia/packages/HTTP/PesRN/src/clientlayers/MessageRequest.jl:17
 [14] request(stack::HTTP.MessageRequest.var\"#1#3\"{HTTP.MessageRequest.var\"#1#2#4\"{HTTP.DebugRequest.var\"#1#4\"{HTTP.DebugRequest.var\"#1#2#5\"{HTTP.RedirectRequest.var\"#1#4\"{HTTP.RedirectRequest.var\"#1#2#5\"{HTTP.DefaultHeadersRequest.var\"#1#3\"{HTTP.DefaultHeadersRequest.var\"#1#2#4\"{HTTP.BasicAuthRequest.var\"#1#3\"{HTTP.BasicAuthRequest.var\"#1#2#4\"{HTTP.ContentTypeDetection.var\"#1#3\"{HTTP.ContentTypeDetection.var\"#1#2#4\"{HTTP.CookieRequest.var\"#1#5\"{HTTP.CookieRequest.var\"#1#2#6\"{HTTP.RetryRequest.var\"#1#4\"{HTTP.RetryRequest.var\"#1#2#5\"{HTTP.CanonicalizeRequest.var\"#1#3\"{HTTP.CanonicalizeRequest.var\"#1#2#4\"{HTTP.ConnectionRequest.var\"#1#7\"{HTTP.ConnectionRequest.var\"#1#2#8\"{HTTP.TimeoutRequest.var\"#1#6\"{HTTP.TimeoutRequest.var\"#1#2#7\"{HTTP.ExceptionRequest.var\"#1#3\"{HTTP.ExceptionRequest.var\"#1#2#4\"{typeof(HTTP.StreamRequest.streamlayer)}}}}}}}}}}}}}}}}}}}}}}}}, method::String, url::String, h::Vector{Pair{String, String}}, b::String, q::Nothing  headers::Vector{Pair{String, String}}, body::String, query::Nothing, kw::Base.Pairs{Symbol, Integer, Tuple{Symbol, Symbol}, NamedTuple{(:status_exception, :readtimeout), Tuple{Bool, Int64}}})
    @ HTTP /home/timuser/.julia/packages/HTTP/PesRN/src/HTTP.jl:413
 [15] #request#16
    @ /home/timuser/.julia/packages/HTTP/PesRN/src/HTTP.jl:273 [inlined]

Versions:

• Julia 1.7.3
• HTTP.jl 1.3.3
• MbedTLS.jl 1.1.5

[quinnj]

That code was only ever emitting a @warn log that the connection was reset; we now have a more consistent logging framework where those errors are always emitted as @error logs instead of sometimes being @warn and sometimes @error. Regardless, these never affected the actual functioning of the server itself.

Hopefully that helps?

[JakubPorubcansky]

Oh yes, you are right, I did not check the code properly.