Add OpenSSL TLS 1.3 early data (0-RTT) support#22802
Open
bukka wants to merge 1 commit into
Open
Conversation
This builds on the session resumption support to let clients send and servers accept TLS 1.3 early data through the stream SSL context. Clients set the early_data context option (a string) to send 0-RTT data, which is only sent when the resumed session allows it. Servers enable acceptance with max_early_data and receive the data through the early_data_cb callback, so nothing is buffered on the stream. The outcome is reported as 'accepted', 'rejected' or 'not_sent' in the early_data key of the crypto stream_get_meta_data() array. Enabling early data also shares the server SSL_CTX across accepted connections and keeps the session cache on, both of which 0-RTT resumption requires.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This builds on the session resumption support to let clients send and servers accept TLS 1.3 early data through the stream SSL context.
Clients set the early_data context option (a string) to send 0-RTT data, which is only sent when the resumed session allows it. Servers enable acceptance with
max_early_dataand receive the data through theearly_data_cbcallback, so nothing is buffered on the stream. The outcome is reported asaccepted,rejectedornot_sentin the early_data key of the crypto stream_get_meta_data() array.Enabling early data also shares the server SSL_CTX across accepted connections and keeps the session cache on, both of which 0-RTT resumption requires.