export interface BrowserProxy {
    server: string;
    username?: string;
    password?: string;
}
export interface BrowserProxyGate {
    checkUrl: string;
    expectedIp: string;
}
/**
 * Parse an authenticated HTTP(S) proxy from the child environment without
 * requiring credentials in command arguments. The returned server never
 * contains userinfo, so Playwright owns the 407 challenge response.
 */
export declare function browserProxyFromEnv(env?: NodeJS.ProcessEnv): BrowserProxy;
/**
 * Read the optional fixed-egress gate injected by an embedding host wrapper.
 * Both fields are required together so a partial contract
 * fails before Chromium visits the requested target.
 */
export declare function browserProxyGateFromEnv(env?: NodeJS.ProcessEnv): BrowserProxyGate | null;
export declare function extractObservedIp(body: string): string | null;
export declare const WEBRTC_PROXY_ONLY_ARG = "--force-webrtc-ip-handling-policy=disable_non_proxied_udp";
//# sourceMappingURL=proxy.d.ts.map