all Python 3http.clientexception

http.client.BadStatusLine

exceptions

The first line of the response does not look like an HTTP status line, for example the server sent something other than HTTP, or garbage. A subclass of HTTPException.

Syntax

except http.client.BadStatusLine as e: e.line

Common causes: talking plain http:// to a port that expects TLS, or to a non-HTTP service (a database, SSH). The exception text is the line itself in repr, showing what arrived. Before 3.5 an empty response gave BadStatusLine(''); now it is RemoteDisconnected, a subclass, so an old except BadStatusLine still catches that case.

Examples

import http.client
import socket
server, client = socket.socketpair()
server.sendall(b'SSH-2.0-OpenSSH_9.6\r\n')
server.close()
resp = http.client.HTTPResponse(client)
try:
    resp.begin()
except http.client.BadStatusLine as e:
    print(repr(e.line))  # → 'SSH-2.0-OpenSSH_9.6\r\n'
client.close()

See also

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