27 lines
1.0 KiB
TypeScript
27 lines
1.0 KiB
TypeScript
import type { ProxyRequestMiddleware } from ".";
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/**
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* For AWS requests, the body is signed earlier in the request pipeline, before
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* the proxy middleware. This function just assigns the path and headers to the
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* proxy request.
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*/
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export const finalizeAwsRequest: ProxyRequestMiddleware = (proxyReq, req) => {
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if (!req.signedRequest) {
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throw new Error("Expected req.signedRequest to be set");
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}
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// The path depends on the selected model and the assigned key's region.
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proxyReq.path = req.signedRequest.path;
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// Amazon doesn't want extra headers, so we need to remove all of them and
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// reassign only the ones specified in the signed request.
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proxyReq.getRawHeaderNames().forEach(proxyReq.removeHeader.bind(proxyReq));
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Object.entries(req.signedRequest.headers).forEach(([key, value]) => {
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proxyReq.setHeader(key, value);
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});
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// Don't use fixRequestBody here because it adds a content-length header.
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// Amazon doesn't want that and it breaks the signature.
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proxyReq.write(req.signedRequest.body);
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};
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