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fix cloudflare real ip middleware data race

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This commit is contained in:
yusing 2025-02-24 19:50:04 +08:00
parent 0d388a396c
commit 61b0147a7c
1 changed files with 6 additions and 5 deletions
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11
internal/net/gphttp/middleware/cloudflare_real_ip.go
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@ -12,6 +12,7 @@ import (
"github.com/yusing/go-proxy/internal/common"
"github.com/yusing/go-proxy/internal/logging"
"github.com/yusing/go-proxy/internal/net/types"
"github.com/yusing/go-proxy/internal/utils/atomic"
"github.com/yusing/go-proxy/internal/utils/strutils"
)
@ -28,7 +29,7 @@ const (
)
var (
cfCIDRsLastUpdate time.Time
cfCIDRsLastUpdate atomic.Value[time.Time]
cfCIDRsMu sync.Mutex
// RFC 1918.
@ -68,14 +69,14 @@ func (cri *cloudflareRealIP) getTracer() *Tracer {
}
func tryFetchCFCIDR() (cfCIDRs []*types.CIDR) {
if time.Since(cfCIDRsLastUpdate) < cfCIDRsUpdateInterval {
if time.Since(cfCIDRsLastUpdate.Load()) < cfCIDRsUpdateInterval {
return
}
cfCIDRsMu.Lock()
defer cfCIDRsMu.Unlock()
if time.Since(cfCIDRsLastUpdate) < cfCIDRsUpdateInterval {
if time.Since(cfCIDRsLastUpdate.Load()) < cfCIDRsUpdateInterval {
return
}
@ -88,7 +89,7 @@ func tryFetchCFCIDR() (cfCIDRs []*types.CIDR) {
fetchUpdateCFIPRange(cfIPv6CIDRsEndpoint, &cfCIDRs),
)
if err != nil {
cfCIDRsLastUpdate = time.Now().Add(-cfCIDRsUpdateRetryInterval - cfCIDRsUpdateInterval)
cfCIDRsLastUpdate.Store(time.Now().Add(-cfCIDRsUpdateRetryInterval - cfCIDRsUpdateInterval))
logging.Err(err).Msg("failed to update cloudflare range, retry in " + strutils.FormatDuration(cfCIDRsUpdateRetryInterval))
return nil
}
@ -97,7 +98,7 @@ func tryFetchCFCIDR() (cfCIDRs []*types.CIDR) {
}
}
cfCIDRsLastUpdate = time.Now()
cfCIDRsLastUpdate.Store(time.Now())
logging.Info().Msg("cloudflare CIDR range updated")
return
}