-
Notifications
You must be signed in to change notification settings - Fork 29.8k
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Add appendHeader to HTTP/2 compat API and fix issues with duplicate headers in H2 writeHead #51412
Conversation
Previously if an array of raw headers was provided to writeHead, and that array contained any duplicate keys, only the last value was recorded for that key and all others were lost. This changes bring the HTTP/2 compat logic in line with the logic for HTTP/1, so that writeHead headers overwrite any previous conflicting setHeader headers, but do not overwrite themselves.
CI failures all seem to have github actions setup errors where they fail to initialize entirely, unrelated to these changes. Looks like there was a brief GH outage as this ran that's now been resolved, should hopefully work if somebody can rerun them please. |
This comment was marked as outdated.
This comment was marked as outdated.
Looks like this is all passing & mergeable now @debadree25, so I'll skip the rebase for the moment. Thanks for rerunning those tests! Just waiting for somebody familiar with the HTTP/HTTP2 code to review now 😄 |
/cc @nodejs/http2 |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
lgtm
Landed in c25878d |
PR-URL: nodejs#51412 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Marco Ippolito <[email protected]>
PR-URL: #51412 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Marco Ippolito <[email protected]>
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: TODO
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) #51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) #51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) #51794 doc: * add zcbenz to collaborators (Cheng Zhao) #51812 * add lemire to collaborators (Daniel Lemire) #51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) #51412 * (SEMVER-MINOR) add server handshake utility (snek) #51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) #51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) #51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) #50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) #50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) #50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) #51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) #51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) #51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) #50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) #51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) #51244 PR-URL: #51932
PR-URL: #51412 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Marco Ippolito <[email protected]>
PR-URL: #51412 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Marco Ippolito <[email protected]>
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) nodejs#51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) nodejs#51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) nodejs#51794 doc: * add zcbenz to collaborators (Cheng Zhao) nodejs#51812 * add lemire to collaborators (Daniel Lemire) nodejs#51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) nodejs#51412 * (SEMVER-MINOR) add server handshake utility (snek) nodejs#51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) nodejs#51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) nodejs#51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) nodejs#50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) nodejs#50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) nodejs#50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) nodejs#51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) nodejs#51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) nodejs#51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) nodejs#50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) nodejs#51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) nodejs#51244 PR-URL: nodejs#51932
Notable changes: build: * (SEMVER-MINOR) build opt to set local location of headers (Michael Dawson) nodejs#51525 crypto: * (SEMVER-MINOR) implement crypto.hash() (Joyee Cheung) nodejs#51044 * update root certificates to NSS 3.98 (Node.js GitHub Bot) nodejs#51794 doc: * add zcbenz to collaborators (Cheng Zhao) nodejs#51812 * add lemire to collaborators (Daniel Lemire) nodejs#51572 http2: * (SEMVER-MINOR) add h2 compat support for appendHeader (Tim Perry) nodejs#51412 * (SEMVER-MINOR) add server handshake utility (snek) nodejs#51172 * (SEMVER-MINOR) receive customsettings (Marten Richter) nodejs#51323 lib: * (SEMVER-MINOR) move encodingsMap to internal/util (Joyee Cheung) nodejs#51044 sea: * (SEMVER-MINOR) support sea.getRawAsset() (Joyee Cheung) nodejs#50960 * (SEMVER-MINOR) support embedding assets (Joyee Cheung) nodejs#50960 src: * (SEMVER-MINOR) print string content better in BlobDeserializer (Joyee Cheung) nodejs#50960 * (SEMVER-MINOR) support multi-line values for .env file (IlyasShabi) nodejs#51289 * (SEMVER-MINOR) add `process.loadEnvFile` and `util.parseEnv` (Yagiz Nizipli) nodejs#51476 * (SEMVER-MINOR) do not coerce dotenv paths (Tobias Nießen) nodejs#51425 stream: * (SEMVER-MINOR) implement `min` option for `ReadableStreamBYOBReader.read` (Mattias Buelens) nodejs#50888 util: * (SEMVER-MINOR) add styleText API to text formatting (Rafael Gonzaga) nodejs#51850 vm: * (SEMVER-MINOR) support using the default loader to handle dynamic import() (Joyee Cheung) nodejs#51244 PR-URL: nodejs#51932
This PR
appendHeader
method from the HTTP/1 API to the HTTP/2 compat API.writeHead
don't overwrite each other. This follows the same logic as the semi-related recent fix for Duplicate HTTP headers in writeHead are lost, but only if setHeader is also used #50387 in HTTP/1 (so this fixes this issue, and ensures that any resulting conflicts betweenwriteHead
andsetHeader
are handled in the same way as HTTP/1 too).In both cases, the specific code is drawn almost directly from the existing HTTP/1 equivalent (I've mildly tweaked the phrasing in the H1 appendHeader docs en route, as the grammar was a bit off).
There will be some performance impact to this for some uses of the H2 compat API, but I think this should be relevant only in the case where you call
setHeader
on a response and then also pass a separate list of headers towriteHead
for that response. Performance-sensitive code should not do this, and should just pass all headers directly towriteHead
in one go instead. The same concerns already apply to HTTP/1.