2015-11-06 21:39:33 +01:00
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---
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set: 1
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code: 101
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title: Switching Protocols
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2015-11-07 01:41:41 +01:00
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references:
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"Rails HTTP Status Symbol": ":switching_protocols"
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2015-11-06 21:39:33 +01:00
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---
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2015-11-08 23:48:01 +01:00
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The server understands and is willing to comply with the client's request, via
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the Upgrade header field<sup>[1](#ref-1)</sup>, for a change in the application
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protocol being used on this connection.
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2015-11-07 06:24:24 +01:00
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2015-11-08 23:48:01 +01:00
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The server MUST generate an Upgrade header field in the response that indicates
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which protocol(s) will be switched to immediately after the empty line that
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terminates the 101 response.
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2015-11-07 01:28:15 +01:00
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It is assumed that the server will only agree to switch protocols when it is
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advantageous to do so. For example, switching to a newer version of HTTP might
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be advantageous over older versions, and switching to a real-time, synchronous
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protocol might be advantageous when delivering resources that use such features.
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2015-11-08 23:48:01 +01:00
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---
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2015-11-09 19:23:21 +01:00
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* <span id="ref-1"><sup>1</sup> Upgrade [RFC7230 Section 6.7][2]</span>
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2015-11-08 23:48:01 +01:00
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* Source: [RFC7231 Section 6.2.2][1]
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2015-11-07 01:28:15 +01:00
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2015-11-07 03:59:14 +01:00
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[1]: <http://tools.ietf.org/html/rfc7231#section-6.2.2>
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2015-11-07 04:03:35 +01:00
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[2]: <http://tools.ietf.org/html/rfc7230#section-6.7>
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