Error: "RPC failed; curl 55 Send failure: Connection was reset" during Git Push/File upload from outside the Tenant network

Products

• VMware Cloud Director

Issue/Introduction

• When attempting to push code to a DevOps repository or upload large files to a VMware Cloud Director environment from an external network, the operation intermittently fails with the following errors in visual studio power shell :
  
  error: RPC failed; curl 55 Send failure: Connection was reset
send-pack: unexpected disconnect while reading sideband packet
fatal: the remote end hung up unexpectedly
read: connection reset by peer


• The same operation typically works without issue when performed from within the internal VCD tenant network.

Environment

VMware Cloud Director : 10.6.x

Cause

This issue is commonly caused by Network Security Policies or Deep Packet Inspection (DPI) at the Edge Gateway or corporate firewall.
The Edge Gateway had security policies applied that were not configured to exclude the specific tenant or traffic type. When large encrypted payloads (like a Git push) were detected from an external source, the security appliance triggered a TCP Reset (RST) to terminate the session, perceived by the client as a "Connection Reset."

Resolution

To resolve this issue, check with internal cloud/network administration team for the Edge and Firewall policies.