mi guión de fondo.js:

 let portFromCS; function connected(p) { portFromCS = p; // portFromCS.postMessage({greeting: "hi there content script!"}); portFromCS.onMessage.addListener(function(m) { portFromCS.postMessage ({greeting: "In background script, received message from content script:" + m.greeting}); let xhr0 = new XMLHttpRequest(); xhr0.open("GET", "http://127.0.0.1:7878/"+m.greeting); //ok xhr0.send(); let text = xhr0.status; xhr0 = new XMLHttpRequest(); xhr0.open("GET", "http://127.0.0.1:7878/return/"+text); xhr0.send(); }); } browser.runtime.onConnect.addListener(connected);

conectarme a mi servidor web,

devoluciones

 socket://127.0.0.1:52626 GET /Data also provided by socket://127.0.0.1:52636 GET /return/0

significa que uno xhr hace lo que quiero y el otro no

servidor: (escrito por rust + poema)

 #[handler] fn index_test(remote_addr: &RemoteAddr, method: Method, uri: &Uri) -> String { let uri = uri.to_string(); let uri = urlencoding::decode(uri.as_str()).unwrap(); let s0 = format!("{}\n{}\n{}",remote_addr,method,uri); println!("{}",s0); s0 }

captura de pantalla: abrir en el navegador