{
  "api": {
    "WebSocket": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket",
        "spec_url": "https://websockets.spec.whatwg.org/#the-websocket-interface",
        "tags": [
          "web-features:websockets"
        ],
        "support": {
          "chrome": {
            "version_added": "5"
          },
          "chrome_android": "mirror",
          "deno": {
            "version_added": "1.4"
          },
          "edge": {
            "version_added": "12"
          },
          "firefox": [
            {
              "version_added": "11"
            },
            {
              "prefix": "Moz",
              "version_added": "7",
              "version_removed": "11",
              "notes": "Message size limited to 16 MB (see [bug 711205](https://bugzil.la/711205))."
            }
          ],
          "firefox_android": "mirror",
          "ie": {
            "version_added": "10"
          },
          "nodejs": {
            "version_added": "22.0.0"
          },
          "oculus": "mirror",
          "opera": {
            "version_added": "12.1"
          },
          "opera_android": {
            "version_added": "12.1"
          },
          "safari": {
            "version_added": "5"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": "mirror",
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "WebSocket": {
        "__compat": {
          "description": "`WebSocket()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/WebSocket",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-websocket①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": [
              {
                "version_added": "11"
              },
              {
                "prefix": "Moz",
                "version_added": "7",
                "version_removed": "11"
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "url_parameter_http_https_relative": {
          "__compat": {
            "description": "`url` parameter allows `https`, `http`, and relative URLs",
            "tags": [
              "web-features:websockets"
            ],
            "support": {
              "chrome": {
                "version_added": "125"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": false
              },
              "edge": "mirror",
              "firefox": {
                "version_added": "124"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.3"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "worker_support": {
        "__compat": {
          "description": "Available in workers",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "37"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": {
              "version_added": "5"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "binaryType": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/binaryType",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-binarytype①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "15"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "11"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "bufferedAmount": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/bufferedAmount",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-bufferedamount①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "close": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/close",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-close①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "close_event": {
        "__compat": {
          "description": "`close` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/close_event",
          "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onclose",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "error_event": {
        "__compat": {
          "description": "`error` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/error_event",
          "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onerror",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "extensions": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/extensions",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-extensions①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "16"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "8"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "message_event": {
        "__compat": {
          "description": "`message` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/message_event",
          "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onmessage",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "open_event": {
        "__compat": {
          "description": "`open` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/open_event",
          "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onopen",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "protocol": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/protocol",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-protocol①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "15"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "protocol_rfc_6455": {
        "__compat": {
          "description": "Supports protocol as specified by RFC 6455",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "16"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "11"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "readyState": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/readyState",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-readystate①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "send": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/send",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-send①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "5"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": [
              {
                "version_added": "18",
                "impl_url": "https://bugzil.la/775368"
              },
              {
                "version_added": "11",
                "version_removed": "18",
                "notes": "Only parameter of type `ArrayBuffer` and `String` supported."
              },
              {
                "version_added": "8",
                "version_removed": "11",
                "notes": "Only parameter of type `String` supported."
              },
              {
                "version_added": "7",
                "version_removed": "8",
                "notes": "Only parameter of type `String` supported. Returns `boolean`."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "url": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/url",
          "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-url①",
          "tags": [
            "web-features:websockets"
          ],
          "support": {
            "chrome": {
              "version_added": "18"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.4"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "7"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "22.0.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}