support go1.20 (#3287)

.circleci/config.yml

@@ -2,15 +2,15 @@ version: 2
 jobs:
   go-version-latest:
     docker:
-      - image: cimg/go:1.19-node
+      - image: cimg/go:1.20-node
     resource_class: large
     steps:
       - checkout
       - run: make
       - run: make alltest
   go-version-last:
     docker:
-      - image: cimg/go:1.18-node
+      - image: cimg/go:1.19-node
     resource_class: large
     steps:
       - checkout

.github/workflows/golangci-lint.yml

@@ -16,13 +16,13 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: '1.20'
       - uses: actions/checkout@v3
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         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: v1.49.0
+          version: v1.51
 
           # Optional: golangci-lint command line arguments.
           # args: --issues-exit-code=0

.github/workflows/goreleaser.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: '1.20'
 
       - name: Make All
         run: |

.golangci.yml

@@ -1,6 +1,5 @@
 service:
-  # When updating this, also update the version stored in docker/build-tools/Dockerfile in the istio/tools repo.
-  golangci-lint-version: 1.49.x # use the fixed version to not introduce new linters unexpectedly
+  golangci-lint-version: 1.51.x # use the fixed version to not introduce new linters unexpectedly
 
 run:
   concurrency: 4
@@ -127,6 +126,11 @@ issues:
         - errcheck
         - maligned
 
+    # keep it until we only support go1.20
+    - linters:
+        - staticcheck
+      text: "SA1019: rand.Seed has been deprecated"
+
   # 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`.

client/service.go

@@ -19,7 +19,6 @@ import (
 	"crypto/tls"
 	"fmt"
 	"io"
-	"math/rand"
 	"net"
 	"runtime"
 	"strconv"
@@ -47,7 +46,6 @@ import (
 
 func init() {
 	crypto.DefaultSalt = "frp"
-	rand.Seed(time.Now().UnixNano())
 }
 
 // Service is a client service.

cmd/frps/main.go

@@ -15,9 +15,6 @@
 package main
 
 import (
-	"math/rand"
-	"time"
-
 	"github.com/fatedier/golib/crypto"
 
 	_ "github.com/fatedier/frp/assets/frps"
@@ -26,7 +23,6 @@ import (
 
 func main() {
 	crypto.DefaultSalt = "frp"
-	rand.Seed(time.Now().UnixNano())
 
 	Execute()
 }

dockerfiles/Dockerfile-for-frpc

@@ -1,4 +1,4 @@
-FROM golang:1.19 AS building
+FROM golang:1.20 AS building
 
 COPY . /building
 WORKDIR /building

dockerfiles/Dockerfile-for-frps

@@ -1,4 +1,4 @@
-FROM golang:1.19 AS building
+FROM golang:1.20 AS building
 
 COPY . /building
 WORKDIR /building

go.mod

@@ -1,6 +1,6 @@
 module github.com/fatedier/frp
 
-go 1.19
+go 1.20
 
 require (
 	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5