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26 lines
1.2 KiB
JavaScript
26 lines
1.2 KiB
JavaScript
#!/usr/bin/env qjs
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///@ts-check
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/// <reference path="../doc/globals.d.ts" />
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/// <reference path="../doc/os.d.ts" />
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/// <reference path="../doc/std.d.ts" />
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import * as os from "os";
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import * as std from "std";
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/** @template T @param {os.Result<T>} result */
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function must(result) {
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if (typeof result === "number" && result < 0) throw new Error(std.strerror(-result));
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return /** @type {T} */ (result)
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}
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//USAGE: client.js wttr.in/paris
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const uriRegexp = /^(?<host>[A-Za-z0-9\-\.]+)(?<port>:[0-9]+)?(?<query>.*)$/;
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const { host = "bellard.org", port = ":80", query = "/" } = scriptArgs[1]?.match(uriRegexp)?.groups || {};
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console.log("sending GET on",{ host, port, query })
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const [addr] = must(os.getaddrinfo(host, { service: port.slice(1) }));
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const sockfd = must(os.socket(addr.family, addr.socktype));
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await os.connect(sockfd, addr);
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const httpReq = Uint8Array.from(`GET ${query||'/'} HTTP/1.0\r\nHost: ${host}\r\nUser-Agent: curl\r\n\r\n`, c => c.charCodeAt(0))
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must(await os.send(sockfd, httpReq.buffer) > 0);
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const chunk = new Uint8Array(512);
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const recvd = await os.recv(sockfd, chunk.buffer);
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console.log([...chunk.slice(0, recvd)].map(c => String.fromCharCode(c)).join(''));
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