use math/rand/v2 (#4020)

.github/workflows/golangci-lint.yml

@@ -23,7 +23,7 @@ jobs:
       uses: golangci/golangci-lint-action@v4
       with:
         # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
-        version: v1.56
+        version: v1.57
 
         # Optional: golangci-lint command line arguments.
         # args: --issues-exit-code=0

.golangci.yml

@@ -1,5 +1,5 @@
 service:
-  golangci-lint-version: 1.56.x # use the fixed version to not introduce new linters unexpectedly
+  golangci-lint-version: 1.57.x # use the fixed version to not introduce new linters unexpectedly
   
 run:
   concurrency: 4
@@ -8,23 +8,6 @@ run:
   build-tags:
   - integ
   - integfuzz
-  # which dirs to skip: they won't be analyzed;
-  # can use regexp here: generated.*, regexp is applied on full path;
-  # default value is empty list, but next dirs are always skipped independently
-  # from this option's value:
-  #       vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
-  skip-dirs:
-    - genfiles$
-    - vendor$
-    - bin$
-
-  # which files to skip: they will be analyzed, but issues from them
-  # won't be reported. Default value is empty list, but there is
-  # no need to include all autogenerated files, we confidently recognize
-  # autogenerated files. If it's not please let us know.
-  skip-files:
-    - ".*\\.pb\\.go"
-    - ".*\\.gen\\.go"
 
 linters:
   disable-all: true
@@ -136,6 +119,14 @@ issues:
     - unparam
     text: "is always false"
 
+  exclude-dirs:
+  - genfiles$
+  - vendor$
+  - bin$
+  exclude-files:
+  - ".*\\.pb\\.go"
+  - ".*\\.gen\\.go"
+
   # Independently from option `exclude` we use default exclude patterns,
   # it can be disabled by this option. To list all
   # excluded by default patterns execute `golangci-lint run --help`.

pkg/nathole/nathole.go

@@ -17,7 +17,7 @@ package nathole
 import (
 	"context"
 	"fmt"
-	"math/rand"
+	"math/rand/v2"
 	"net"
 	"slices"
 	"strconv"
@@ -341,7 +341,7 @@ func sendSidMessage(
 		TransactionID: transactionID,
 		Sid:           sid,
 		Response:      false,
-		Nonce:         strings.Repeat("0", rand.Intn(20)),
+		Nonce:         strings.Repeat("0", rand.IntN(20)),
 	}
 	buf, err := EncodeMessage(m, key)
 	if err != nil {
@@ -398,7 +398,7 @@ func sendSidMessageToRandomPorts(
 	used := sets.New[int]()
 	getUnusedPort := func() int {
 		for i := 0; i < 10; i++ {
-			port := rand.Intn(65535-1024) + 1024
+			port := rand.IntN(65535-1024) + 1024
 			if !used.Has(port) {
 				used.Insert(port)
 				return port

pkg/util/util/util.go

@@ -20,7 +20,7 @@ import (
 	"crypto/subtle"
 	"encoding/hex"
 	"fmt"
-	mathrand "math/rand"
+	mathrand "math/rand/v2"
 	"net"
 	"strconv"
 	"strings"
@@ -124,7 +124,7 @@ func RandomSleep(duration time.Duration, minRatio, maxRatio float64) time.Durati
 	if max <= min {
 		n = min
 	} else {
-		n = mathrand.Int63n(max-min) + min
+		n = mathrand.Int64N(max-min) + min
 	}
 	d := duration * time.Duration(n) / time.Duration(1000)
 	time.Sleep(d)

pkg/util/wait/backoff.go

@@ -15,7 +15,7 @@
 package wait
 
 import (
-	"math/rand"
+	"math/rand/v2"
 	"time"
 
 	"github.com/fatedier/frp/pkg/util/util"