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| // The below is pseudocode. | |
| // mapperTab.js is the output of the build process from | |
| // https://github.com/GoogleChromeLabs/chromium-bidi | |
| string bidiMapperTabContent = getFileContent("/path/to/mapperTab.js"); | |
| // WebSocket address is found by monitoring console output of | |
| // executing Chrome, and parsing the "DevTools listening on ws://xxx" | |
| string webSocketUrl = launchChrome(); | |
| // Connect to the WebSocket (assume this all does the right thing | |
| // to handle the duplex communication). | |
| WebSocketConnection connection = new(webSocketUrl); | |
| object response = connection.send(JSON.stringify({ | |
| id: 0, | |
| method: "Target.getTargets", | |
| params: {} | |
| }); | |
| string targetId = response["result"]["targetInfos"][0]["targetId"]; | |
| response = connection.send(JSON.stringify({ | |
| id: 1, | |
| method: "Target.attachToTarget", | |
| params: { | |
| targetId: targetId, | |
| flatten: true | |
| } | |
| }); | |
| string sessionId = response["result"]["sessionId"] | |
| response = connection.send(JSON.stringify({ | |
| id: 2, | |
| method: "Target.exposeDevToolsProtocol", | |
| params: { | |
| bindingName: "cdp", | |
| targetId: targetId | |
| } | |
| }); | |
| response = connection.send(JSON.stringify({ | |
| id: 3, | |
| method: "Runtime.addBinding", | |
| params: { | |
| name: "sendBidiResponse" | |
| }, | |
| sessionId: sessionId | |
| }); | |
| // To prevent the beforeunload prompt from appearing on close | |
| response = connection.send(JSON.stringify({ | |
| id: 4, | |
| method: "Runtime.evaluate", | |
| params: { | |
| expression: "document.body.click()", | |
| userGesture: true | |
| } | |
| }); | |
| response = connection.send(JSON.stringify({ | |
| id: 5, | |
| method: "Runtime.evaluate", | |
| params: { | |
| expression: `"${bidiMapperTabContent}"`, | |
| }, | |
| sessionId: sessionId | |
| }); | |
| response = connection.send(JSON.stringify({ | |
| id: 6, | |
| method: "Runtime.evaluate", | |
| params: { | |
| expression: `"window.runMapperInstance(${targetId}, {})"`, | |
| awaitPromise: true | |
| }, | |
| sessionId: sessionId | |
| }); | |
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