Your client, after the far end closed without sending anything.
ERR_EMPTY_RESPONSE / empty reply from server
The connection opened and then closed with zero bytes of response. In scraping this is very often a deliberate drop: closing silently costs the target less than rendering a block page, and it tells you less.
A proxy fixes part of this. A better pool fixes the flaky-exit version. The deliberate-drop version needs the same work a 403 needs, and the silence is what makes it expensive to diagnose.
Why it happens
A deliberate drop by an anti-bot layer that decided not to answer at all.
A TLS mismatch where the server hangs up rather than sending an alert.
HTTP sent to an HTTPS port, or the reverse.
An exit node that died between the connection and the response.
How to fix it
- Repeat it. Consistent for one target and never for others means a block; occasional means a flaky exit.
- Check the scheme and port — an empty reply is what plain HTTP to port 443 looks like.
- If it is consistent, treat it as a 403 and change the fingerprint as well as the address.
FAQ
What does ERR_EMPTY_RESPONSE mean?›
The connection opened and then closed with zero bytes of response. In scraping this is very often a deliberate drop: closing silently costs the target less than rendering a block page, and it tells you less. Your client, after the far end closed without sending anything.
Why am I getting ERR_EMPTY_RESPONSE?›
A deliberate drop by an anti-bot layer that decided not to answer at all. A TLS mismatch where the server hangs up rather than sending an alert. HTTP sent to an HTTPS port, or the reverse. An exit node that died between the connection and the response.
How do I fix ERR_EMPTY_RESPONSE?›
Repeat it. Consistent for one target and never for others means a block; occasional means a flaky exit. Check the scheme and port — an empty reply is what plain HTTP to port 443 looks like. If it is consistent, treat it as a 403 and change the fingerprint as well as the address.
Will a proxy fix ERR_EMPTY_RESPONSE?›
A better pool fixes the flaky-exit version. The deliberate-drop version needs the same work a 403 needs, and the silence is what makes it expensive to diagnose.
Other errors
ENOTFOUNDERR_TUNNEL_CONNECTION_FAILEDERR_PROXY_CONNECTION_FAILEDECONNRESETETIMEDOUT407403429401502503504
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