11.22.6 ProtocolError Objects

A ProtocolError object describes a protocol error in the underlying transport layer (such as a 404 `not found' error if the server named by the URI does not exist). It has the following members:

url
The URI or URL that triggered the error.

errcode
The error code.

errmsg
The error message or diagnostic string.

headers
A string containing the headers of the HTTP/HTTPS request that triggered the error.

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