Describe the bug
I have an API that returns a header along with the response that I need. The docs say that I have to use a callback onHeader to get that. I did that, but there are only 4 values available. The actual list of response headers is much longer.
To Reproduce
Thats what my code to call the API looks like:
let res: SignInResponse = await api.account.signIn(
req,
{
onHeader: (headers: Headers) => {
let t = headers.get("Token")
console.log(headers)
if (t !== null) {
token.value = t
}
},
onTrailer: (trailers) => console.log(trailers)
}
)The console.log output is the following:
Headers(4) { "accept-encoding" → "gzip", "content-encoding" → "gzip", "content-length" → "98", "content-type" → "application/json" }
But the list of returned HTTP response headers is actually much longer and include the header (Token) that I need.
HTTP/1.1 200 OK
Accept-Encoding: gzip
Access-Control-Allow-Origin: *
Access-Control-Expose-Headers: Accept, Accept-Encoding, Connect-Accept-Encoding, Connect-Content-Encoding, Content-Encoding, Connect-Protocol-Version, Grpc-Accept-Encoding, Grpc-Encoding, Grpc-Message, Grpc-Status, Grpc-Status-Details-Bin
Content-Encoding: gzip
Content-Type: application/json
Token: <TOKEN>
Vary: Origin
Date: Mon, 16 Jan 2023 17:27:16 GMT
Content-Length: 98
Environment (please complete the following information):
0.6.0[email protected]Mozilla Firefox 108.0.2Hey Daniel, thanks for the detailed info.
From what I see, your browser does not have access to the Token header because the request goes to a different domain. Browsers limit access to cross-domain resources, and while it looks like you already have a CORS setup (judging from the presence of Access-Control-Allow-Origin and Access-Control-Expose-Headers), your Access-Control-Expose-Headers value does not include the required Token.
If you include Token in this response header, the browser should gain access to it, and you should see it in the console.log statement. In the connect demo, we are using github.com/rs/cors, and it's been pretty convenient for us.
| Owner Name | bufbuild |
| Repo Name | connect-es |
| Full Name | bufbuild/connect-es |
| Language | TypeScript |
| Created Date | 2022-02-16 |
| Updated Date | 2023-03-24 |
| Star Count | 852 |
| Watcher Count | 20 |
| Fork Count | 33 |
| Issue Count | 17 |
| Issue Title | Created Date | Updated Date |
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