61 lines
1.4 KiB
JavaScript
61 lines
1.4 KiB
JavaScript
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function parseUrl(url) {
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// XXX: Hack.
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let match = url.match(new RegExp("(\\w+)://([^/]+)?(.*)"));
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return {
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protocol: match[1],
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host: match[2],
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path: match[3],
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port: match[1] == "http" ? 80 : 443,
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};
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}
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function parseResponse(data) {
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let firstLine;
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let headers = {};
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while (true) {
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let endLine = data.indexOf('\r\n');
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let line = data.substring(0, endLine);
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if (!firstLine) {
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firstLine = line;
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} else if (!line.length) {
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break;
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} else {
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let colon = line.indexOf(":");
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headers[line.substring(colon)] = line.substring(colon + 1);
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}
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data = data.substring(endLine + 2);
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}
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return {body: data};
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}
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export function fetch(url, options) {
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let parsed = parseUrl(url);
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return new Promise(function(resolve, reject) {
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let socket = new Socket();
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let buffer = new Uint8Array(0)
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return socket.connect(parsed.host, parsed.port).then(function() {
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socket.read(function(data) {
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if (data) {
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let newBuffer = new Uint8Array(buffer.length + data.length);
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newBuffer.set(buffer, 0);
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newBuffer.set(data, buffer.length);
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buffer = newBuffer;
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} else {
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resolve(parseResponse(utf8Decode(buffer)));
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}
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});
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if (parsed.port == 443) {
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return socket.startTls();
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}
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}).then(function() {
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socket.write(`${options?.method ?? 'GET'} ${parsed.path} HTTP/1.0\r\nHost: ${parsed.host}\r\nConnection: close\r\n\r\n`);
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socket.shutdown();
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}).catch(function(error) {
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reject(error);
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});
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});
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}
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