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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
import { lookup as defaultLookup } from "ext:deno_node/dns.ts";
import {
isInt32,
validateFunction,
} from "ext:deno_node/internal/validators.mjs";
import type { ErrnoException } from "ext:deno_node/internal/errors.ts";
import { ERR_SOCKET_BAD_TYPE } from "ext:deno_node/internal/errors.ts";
import { UDP } from "ext:deno_node/internal_binding/udp_wrap.ts";
import { guessHandleType } from "ext:deno_node/internal_binding/util.ts";
import { codeMap } from "ext:deno_node/internal_binding/uv.ts";
export type SocketType = "udp4" | "udp6";
export const kStateSymbol: unique symbol = Symbol("kStateSymbol");
function lookup4(
lookup: typeof defaultLookup,
address: string,
callback: (
err: ErrnoException | null,
address: string,
family: number,
) => void,
) {
return lookup(address || "127.0.0.1", 4, callback);
}
function lookup6(
lookup: typeof defaultLookup,
address: string,
callback: (
err: ErrnoException | null,
address: string,
family: number,
) => void,
) {
return lookup(address || "::1", 6, callback);
}
export function newHandle(
type: SocketType,
lookup?: typeof defaultLookup,
): UDP {
if (lookup === undefined) {
lookup = defaultLookup;
} else {
validateFunction(lookup, "lookup");
}
if (type === "udp4") {
const handle = new UDP();
handle.lookup = lookup4.bind(handle, lookup);
return handle;
}
if (type === "udp6") {
const handle = new UDP();
handle.lookup = lookup6.bind(handle, lookup);
handle.bind = handle.bind6;
handle.connect = handle.connect6;
handle.send = handle.send6;
return handle;
}
throw new ERR_SOCKET_BAD_TYPE();
}
export function _createSocketHandle(
address: string,
port: number,
addressType: SocketType,
fd: number,
flags: number,
) {
const handle = newHandle(addressType);
let err;
if (isInt32(fd) && fd > 0) {
const type = guessHandleType(fd);
if (type !== "UDP") {
err = codeMap.get("EINVAL")!;
} else {
err = handle.open(fd);
}
} else if (port || address) {
err = handle.bind(address, port || 0, flags);
}
if (err) {
handle.close();
return err;
}
return handle;
}
export default {
kStateSymbol,
newHandle,
_createSocketHandle,
};
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