The HTTP 421 Misdirected Request error occurs when your request is sent to a server that cannot respond appropriately. This issue may arise if the server connection is reused or an incorrect server is chosen. Ensure the server configuration matches the intended target.
Reusing a connection that was previously used to communicate with a different server.
Server configuration issues that prevent it from accepting requests from the current client.
Incorrect DNS configuration leading to requests being sent to the wrong server.
Load balancers or reverse proxies routing requests incorrectly within a network.
# Request example curl -X POST https://sandbox.oxylabs.io/ -H 'Accept: application/xml;q=0.9' -H 'Accept-Encoding: br' -H 'User-Agent: AppleWebKit/537.36'
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Verify the server configuration to ensure it matches the intended target.
Avoid reusing server connections that may be misdirected.
Check the DNS settings to ensure requests are routed to the correct server.
Implement HTTP/2 server push with care to prevent misdirected requests.
# Response example HTTP/1.1 421 Misdirected Request Content-Type: text/xml; charset=utf-8 Content-Length: 123421Misdirected Request
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