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ProtonMail / proton-bridge

Proton Mail Bridge application
GNU General Public License v3.0
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Unexplicable error - "wsasend: An existing connection was forcibly closed by the remote host." #383

Closed tinmanjk closed 1 year ago

tinmanjk commented 1 year ago

Issue tracker is ONLY used for reporting bugs with technical details. "It doesn't work" or new features should be discussed with our customer support. Please use bug report function in Bridge or contact bridge@protonmail.ch.

Expected Behavior

Current Behavior

Receiving the following error in the Proton Bridge CLI (confirmed in logs) time="May 5 09:26:27.541" level=error msg="IMAP server error" error="write tcp 127.0.0.1:1143->127.0.0.1:3721: wsasend: An existing connection was forcibly closed by the remote host."

Possible Solution

Steps to Reproduce

Version Information

Proton Mail Bridge 3.1.2 for Windows

Context (Environment)

1143 is the port for IMAP., not sure what 127.0.0.1:3721 is. I was receiving this error a lot before turning ESET Antivirus' Firewall into Learning mode which is supposed to create rules for new connections and not block connections.

Detailed Description

Possible Implementation

LBeernaertProton commented 1 year ago

hey @tinmanjk , that is not an "unexplicable error". That happens when your IMAP client terminates its connection to the IMAP server (Bridge) before Bridge can send back the full reply.

The 3271 is the port assigned to your client connection after connecting to the server (Bridge). You can read more about it here https://en.wikipedia.org/wiki/Transmission_Control_Protocol.