Function configureUndiciProxy

src/utils/networkProxy.ts:262–316

* Configure undici's global dispatcher so Node's built-in `fetch()` and any undici-based * clients route through the proxy.

(config: ProxyConfig)

 * clients route through the proxy.
 */
async function configureUndiciProxy(config: ProxyConfig): Promise<void> {
	if (!config.enabled || !config.serverUrl) {
		return
	}

	if (undiciProxyInitialized) {
		log(`undici global dispatcher already configured; restart VS Code to change proxy safely`)
		return
	}

	try {
		const {
			ProxyAgent,
			setGlobalDispatcher,
			fetch: undiciFetch,
		} = (await import("undici")) as typeof import("undici")

		const proxyAgent = new ProxyAgent({
			uri: config.serverUrl,
			// If the user enabled TLS insecure mode (debug only), apply it to undici.
			requestTls: config.tlsInsecure
				? ({ rejectUnauthorized: false } satisfies import("tls").ConnectionOptions) // lgtm[js/disabling-certificate-validation]
				: undefined,
			proxyTls: config.tlsInsecure
				? ({ rejectUnauthorized: false } satisfies import("tls").ConnectionOptions) // lgtm[js/disabling-certificate-validation]
				: undefined,
		})
		setGlobalDispatcher(proxyAgent)
		undiciProxyInitialized = true
		log(`undici global dispatcher configured for proxy: ${redactProxyUrl(config.serverUrl)}`)

		// Node's built-in `fetch()` (Node 18+) is powered by an internal undici copy.
		// Setting a dispatcher on our `undici` dependency does NOT affect that internal fetch.
		// To ensure Roo Code's `fetch()` calls are proxied, patch global fetch in debug mode.
		// This patch is scoped to the extension lifecycle (restored on deactivate) and can be restored
		// immediately if the proxy is disabled.
		if (!fetchPatched) {
			if (typeof globalThis.fetch === "function") {
				originalFetch = globalThis.fetch
			}

			globalThis.fetch = undiciFetch as unknown as typeof fetch
			fetchPatched = true
			log(`globalThis.fetch patched to undici.fetch (debug proxy mode)`)

			if (extensionContext) {
				extensionContext.subscriptions.push({
					dispose: () => restoreGlobalFetchPatch(),
				})
			}
		}
	} catch (error) {
		log(`Failed to configure undici proxy dispatcher: ${error instanceof Error ? error.message : String(error)}`)
	}
}
/**
 * Update environment variables for proxy configuration.
 * global-agent reads from GLOBAL_AGENT_* environment variables.