kyle hoell
78 lines
2.4 KiB
TypeScript
78 lines
2.4 KiB
TypeScript
import {Response, Request} from "express"
|
|
const StreamSkip = require("stream-skip");
|
|
|
|
const awaitStreamVideo = (start: number, end:number, differenceStart: number,
|
|
decipher: any, res: Response, req: Request, streamsToErrorCatch: any[], readStream: any) => {
|
|
|
|
return new Promise((resolve, reject) => {
|
|
|
|
req.on("close", () => {
|
|
// readStream.close();
|
|
decipher.destroy();
|
|
resolve();
|
|
})
|
|
|
|
req.on("end", () => {
|
|
streamsToErrorCatch.forEach((stream) => {
|
|
stream.destroy();
|
|
})
|
|
resolve();
|
|
})
|
|
|
|
streamsToErrorCatch.forEach((currentStream) => {
|
|
|
|
currentStream.on("error", (e: Error) => {
|
|
|
|
reject({
|
|
message: "Await Video Stream Input Error",
|
|
code: 500,
|
|
error: e
|
|
})
|
|
|
|
})
|
|
})
|
|
|
|
readStream.on("close", () => {
|
|
decipher.destroy();
|
|
})
|
|
|
|
if (+start === 0 && +end === 1) {
|
|
|
|
// This is for Safari/iOS, for whatever reason they ask for the
|
|
// First byte, but if I actually try to return the first byte
|
|
// It will not work ???, but if I return the first 4 bytes it seems
|
|
// To work fine.
|
|
|
|
decipher.on("data", (data: Buffer | string) => {
|
|
|
|
const dataCoverted = data.toString("hex");
|
|
|
|
let neededData = dataCoverted.substring(0, 8);
|
|
|
|
const dataBack = Buffer.from(neededData, "hex");
|
|
|
|
res.write(dataBack);
|
|
|
|
resolve();
|
|
})
|
|
|
|
} else {
|
|
|
|
// This is where the differnce start comes into play, as I said before
|
|
// There will be an offset caused by the 16 block size of AES256.
|
|
// So if there was an offset we need to skip over those bytes
|
|
// To make sure it returns the exact position the browser is requesting.
|
|
// Most browsers will still work fine without this, such as Chrome and Firefox.
|
|
// But one browser needs to be pampered and fed the exact right bytes in
|
|
// Order to function correctly, can you guess what browser? If you
|
|
// Guessed Safari you would be correct.
|
|
|
|
const streamSkip = new StreamSkip({skip: differenceStart});
|
|
|
|
decipher.pipe(streamSkip).pipe(res);
|
|
}
|
|
|
|
})
|
|
}
|
|
|
|
export default awaitStreamVideo; |