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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| import { NextRequest, NextResponse } from "next/server"; | ||
|
|
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| export async function handle( | ||
| req: NextRequest, | ||
| { params }: { params: { path: string[] } }, | ||
| ) { | ||
| console.log("[Proxy Route] params ", params); | ||
|
|
||
| if (req.method === "OPTIONS") { | ||
| return NextResponse.json({ body: "OK" }, { status: 200 }); | ||
| } | ||
|
|
||
| // remove path params from searchParams | ||
| req.nextUrl.searchParams.delete("path"); | ||
| req.nextUrl.searchParams.delete("provider"); | ||
|
|
||
| const subpath = params.path.join("/"); | ||
| const fetchUrl = `${req.headers.get( | ||
| "x-base-url", | ||
| )}/${subpath}?${req.nextUrl.searchParams.toString()}`; | ||
| const skipHeaders = ["connection", "host", "origin", "referer", "cookie"]; | ||
| const headers = new Headers( | ||
| Array.from(req.headers.entries()).filter((item) => { | ||
| if ( | ||
| item[0].indexOf("x-") > -1 || | ||
| item[0].indexOf("sec-") > -1 || | ||
| skipHeaders.includes(item[0]) | ||
| ) { | ||
| return false; | ||
| } | ||
| return true; | ||
| }), | ||
| ); | ||
| const controller = new AbortController(); | ||
| const fetchOptions: RequestInit = { | ||
| headers, | ||
| method: req.method, | ||
| body: req.body, | ||
| // to fix #2485: https://stackoverflow.com/questions/55920957/cloudflare-worker-typeerror-one-time-use-body | ||
| redirect: "manual", | ||
| // @ts-ignore | ||
| duplex: "half", | ||
| signal: controller.signal, | ||
| }; | ||
|
|
||
| const timeoutId = setTimeout( | ||
| () => { | ||
| controller.abort(); | ||
| }, | ||
| 10 * 60 * 1000, | ||
| ); | ||
|
|
||
| try { | ||
| const res = await fetch(fetchUrl, fetchOptions); | ||
| // to prevent browser prompt for credentials | ||
| const newHeaders = new Headers(res.headers); | ||
| newHeaders.delete("www-authenticate"); | ||
| // to disable nginx buffering | ||
| newHeaders.set("X-Accel-Buffering", "no"); | ||
|
|
||
| // The latest version of the OpenAI API forced the content-encoding to be "br" in json response | ||
| // So if the streaming is disabled, we need to remove the content-encoding header | ||
| // Because Vercel uses gzip to compress the response, if we don't remove the content-encoding header | ||
| // The browser will try to decode the response with brotli and fail | ||
| newHeaders.delete("content-encoding"); | ||
|
|
||
| return new Response(res.body, { | ||
| status: res.status, | ||
| statusText: res.statusText, | ||
| headers: newHeaders, | ||
| }); | ||
| } finally { | ||
| clearTimeout(timeoutId); | ||
| } | ||
| } |
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