Node.jsNode.jsError code

HPE_HEADER_OVERFLOW

hpe header overflow

What does this code mean?

Code HPE_HEADER_OVERFLOW · An issue reported by Node.js.

Official explanation · Original text

Too much HTTP header data was received. In order to protect against malicious or malconfigured clients, if more than maxHeaderSize of HTTP header data is received then HTTP parsing will abort without a request or response object being created, and an Error with this code will be emitted.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Code reference
Official code description ↗
Definition and explanation · Not troubleshooting steps
General diagnostic guide
Error propagation and handling ↗
Product-wide · Not specific to this code

Source and terms of use

Errors | Node.js v26.13.1 Documentation ↗

Creator: Node.js contributors; Joyent, Inc. and other Node contributors
License: MIT License (Node.js documentation)
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

Source details · Original licenses and notices

HPE_HEADER_OVERFLOW