Allow to embed CORS proxy URL in "fetch" relay_url

[chschnell]

v86/src/browser/starter.js

Lines 314 to 317 in 298da23

	if(relay_url === "fetch")
	{
	this.network_adapter = new FetchNetworkAdapter(this.bus);
	}

My suggestion would be to change this to:

if(relay_url.startsWith("fetch")) {
    const fetch_options = {};
    if(relay_url.length > 6 && relay_url[5] === ":") {
        fetch_options.cors_proxy = relay_url.slice(6);
    }
    this.network_adapter = new FetchNetworkAdapter(this.bus, fetch_options);
}

Things would behave as before when passing only fetch to config.net_device.relay_url, but when passing something like:

fetch:https://example.com/?url=

then CORS proxy https://example.com/?url= would be used.

[copy]

Cheers!