Mahmood Ali 67880310a1 backend: support WS authentication handshake in alloc/exec ...

The javascript Websocket API doesn't support setting custom headers
(e.g. `X-Nomad-Token`).  This change adds support for having an
authentication handshake message: clients can set `ws_handshake` URL
query parameter to true and send a single handshake message with auth
token first before any other mssage.

This is a backward compatible change: it does not affect nomad CLI path, as it
doesn't set `ws_handshake` parameter.

2020-04-03 11:18:54 -04:00

27 KiB

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