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docs: clarify that sub protocols are not set via responseHeader arg.

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Matt Silverlock 2020-08-22 14:03:32 -07:00 committed by GitHub
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commit 78ab81e242
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1 changed files with 2 additions and 2 deletions
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server.go
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@ -115,8 +115,8 @@ func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
//
// The responseHeader is included in the response to the client's upgrade
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
// application negotiated subprotocol (Sec-WebSocket-Protocol).
// request. Use the responseHeader to specify cookies (Set-Cookie). To specify
// subprotocols supported by the server, set Upgrader.Subprotocols directly.
//
// If the upgrade fails, then Upgrade replies to the client with an HTTP error
// response.