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[Rails] Action CableでWebsocketが繋がらない（原因はconfig）

Last updated at 2019-04-08Posted at 2019-04-08

問題

Action CableでWebsocketが繋がらない。
bashには下の様なログがひたすら出続ける。

bash

Started GET "/cable" for 10.0.2.2 at 2019-04-08 08:30:09 +0100
Started GET "/cable/" [WebSocket] for 10.0.2.2 at 2019-04-08 08:30:09 +0100
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
RoomChannel is transmitting the subscription confirmation
Started GET "/cable" for 10.0.2.2 at 2019-04-08 08:30:09 +0100
Started GET "/cable/" [WebSocket] for 10.0.2.2 at 2019-04-08 08:30:09 +0100
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
RoomChannel is transmitting the subscription confirmation
Started GET "/cable" for 10.0.2.2 at 2019-04-08 08:30:18 +0100
Started GET "/cable/" [WebSocket] for 10.0.2.2 at 2019-04-08 08:30:18 +0100
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
RoomChannel is transmitting the subscription confirmation

原因

config/environments/development.rbで以下の設定をしていた事が原因だった。

config/environments/development.rb

config.reload_classes_only_on_change = false

解法

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