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qtls: only attempt 0-RTT resumption for 0-RTT enabled session tickets (#4183)

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This commit is contained in:
Marten Seemann
2023-12-09 19:47:47 +05:30
committed by GitHub
parent 38eafe4ad8
commit d234d62d52
7 changed files with 135 additions and 25 deletions
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13
internal/qtls/client_session_cache.go
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@@ -7,8 +7,8 @@ import (
)
type clientSessionCache struct {
getData func() []byte
setData func([]byte) (allowEarlyData bool)
getData func(earlyData bool) []byte
setData func(data []byte, earlyData bool) (allowEarlyData bool)
wrapped tls.ClientSessionCache
}
@@ -24,7 +24,7 @@ func (c clientSessionCache) Put(key string, cs *tls.ClientSessionState) {
c.wrapped.Put(key, cs)
return
}
state.Extra = append(state.Extra, addExtraPrefix(c.getData()))
state.Extra = append(state.Extra, addExtraPrefix(c.getData(state.EarlyData)))
newCS, err := tls.NewResumptionState(ticket, state)
if err != nil {
// It's not clear why this would error. Just save the original state.
@@ -46,12 +46,13 @@ func (c clientSessionCache) Get(key string) (*tls.ClientSessionState, bool) {
c.wrapped.Put(key, nil)
return nil, false
}
var earlyData bool
// restore QUIC transport parameters and RTT stored in state.Extra
if extra := findExtraData(state.Extra); extra != nil {
earlyData = c.setData(extra)
earlyData := c.setData(extra, state.EarlyData)
if state.EarlyData {
state.EarlyData = earlyData
}
}
state.EarlyData = earlyData
session, err := tls.NewResumptionState(ticket, state)
if err != nil {
// It's not clear why this would error.