tildefriends/packages/cory/libhttp/libhttp.js

65 lines
1.3 KiB
JavaScript

"use strict";
//! {"permissions": ["network"]}
function parseUrl(url) {
// XXX: Hack.
var match = url.match(new RegExp("(\\w+)://([^/]+)?(.*)"));
return {
protocol: match[1],
host: match[2],
path: match[3],
port: match[1] == "http" ? 80 : 443,
};
}
function parseResponse(data) {
var firstLine;
var headers = {};
while (true) {
var endLine = data.indexOf("\r\n");
var line = data.substring(0, endLine);
if (!firstLine) {
firstLine = line;
} else if (!line.length) {
break;
} else {
var colon = line.indexOf(":");
headers[line.substring(0, colon).toLowerCase()] = line.substring(colon + 1).trim();
}
data = data.substring(endLine + 2);
}
return {body: data, headers: headers};
}
function get(url) {
return new Promise(async function(resolve, reject) {
try {
let parsed = parseUrl(url);
let buffer = "";
let socket = await network.newConnection();
await socket.connect(parsed.host, parsed.port);
socket.read(function(data) {
if (data) {
buffer += data;
} else {
resolve(parseResponse(buffer));
}
});
if (parsed.port == 443) {
await socket.startTls();
}
socket.write(`GET ${parsed.path} HTTP/1.0\r\nHost: ${parsed.host}\r\nConnection: close\r\n\r\n`);
//socket.close();
} catch(error) {
reject(error);
}
});
}
exports.get = get;