NOISSUE - Add DTLS config to coap-cli (#11)

* feat: Migrate gocoap from v2 to v3.3

Signed-off-by: 1998-felix <felix.gateru@gmail.com>

* refactor: Remove .env file

Signed-off-by: 1998-felix <felix.gateru@gmail.com>

* feat: add options command, example with coap.me

Signed-off-by: 1998-felix <felix.gateru@gmail.com>

* feat: add dtls config

Signed-off-by: 1998-felix <felix.gateru@gmail.com>

* fix(ci): change base branch to master

* chore: update golangci-linter

* chore(dependabot): group gh and go dependencies

* chore: update CI and go version to 1.25

* chore: update dependencies

* refactor: remove examples

* refactor: cleanup dependencies

* fix(Makefile): change command used to build cli

---------

Signed-off-by: 1998-felix <felix.gateru@gmail.com>
Co-authored-by: Rodney Osodo <socials@rodneyosodo.com>

Author: felixgateru

.github/dependabot.yml

@@ -7,8 +7,20 @@ updates:
     directory: ".github/workflows"
     schedule:
       interval: "monthly"
+      day: "monday"
+      timezone: "Europe/Paris"
+    groups:
+      gh-dependency:
+        patterns:
+          - "*"
 
   - package-ecosystem: "gomod"
     directory: "/"
     schedule:
       interval: "monthly"
+      day: "monday"
+      timezone: "Europe/Paris"
+    groups:
+      go-dependency:
+        patterns:
+          - "*"

.github/workflows/ci.yml

@@ -6,10 +6,10 @@ name: Continuous Integration
 on:
   pull_request:
     branches:
-      - master
+      - main
   push:
     branches:
-      - master
+      - main
 
 jobs:
   lint-and-build:
@@ -18,18 +18,19 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.22.x
+          go-version: 1.25.x
           cache-dependency-path: "go.sum"
 
       - name: Check linting
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v8
         with:
-          version: v1.56.2
+          version: v2.4.0
+          args: --config ./.golangci.yml
 
       - name: Build Binaries
         run: |

.golangci.yml

@@ -1,75 +1,94 @@
 # Copyright (c) Abstract Machines
 # SPDX-License-Identifier: Apache-2.0
 
+version: "2"
 run:
   concurrency: 4
-  timeout: 1m
-
-linters-settings:
-  importas:
-    no-unaliased: true
-    no-extra-aliases: false
-  gocritic:
-    enabled-checks:
-      - importShadow
-      - httpNoBody
-      - paramTypeCombine
-      - emptyStringTest
-      - builtinShadow
-      - exposedSyncMutex
-    disabled-checks:
-      - appendAssign
-    enabled-tags:
-      - diagnostic
-    disabled-tags:
-      - performance
-      - style
-      - experimental
-      - opinionated
-  stylecheck:
-    checks: ["-ST1000", "-ST1003", "-ST1020", "-ST1021", "-ST1022"]
-  goheader:
-    template: |-
-      Copyright (c) Abstract Machines
-      SPDX-License-Identifier: Apache-2.0
-
 linters:
-  disable-all: true
-  fast: true
+  default: none
   enable:
-    - gocritic
-    - gosimple
-    - errcheck
-    - govet
-    - unused
-    - goconst
-    - godot
-    - godox
-    - ineffassign
-    - misspell
-    - stylecheck
-    - whitespace
-    - gci
-    - gofmt
-    - goimports
-    - loggercheck
-    - goheader
     - asasalint
     - asciicheck
     - bidichk
     - contextcheck
+    - copyloopvar
     - decorder
     - dogsled
+    - dupword
+    - errcheck
     - errchkjson
     - errname
-    - execinquery
-    - exportloopref
     - ginkgolinter
     - gocheckcompilerdirectives
-    - gofumpt
+    - goconst
+    - gocritic
+    - godot
+    - godox
+    - goheader
     - goprintffuncname
+    - govet
     - importas
+    - ineffassign
+    - loggercheck
     - makezero
     - mirror
+    - misspell
     - nakedret
-    - dupword
+    - staticcheck
+    - unused
+    - whitespace
+  settings:
+    gocritic:
+      enabled-checks:
+        - importShadow
+        - httpNoBody
+        - paramTypeCombine
+        - emptyStringTest
+        - builtinShadow
+        - exposedSyncMutex
+      disabled-checks:
+        - appendAssign
+      enabled-tags:
+        - diagnostic
+      disabled-tags:
+        - performance
+        - style
+        - experimental
+        - opinionated
+    goheader:
+      template: |-
+        Copyright (c) Abstract Machines
+        SPDX-License-Identifier: Apache-2.0
+    importas:
+      no-unaliased: true
+      no-extra-aliases: false
+    staticcheck:
+      checks:
+        - -ST1000
+        - -ST1003
+        - -ST1020
+        - -ST1021
+        - -ST1022
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gci
+    - gofmt
+    - gofumpt
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

Makefile

@@ -1,7 +1,27 @@
 # Copyright (c) Abstract Machines
 # SPDX-License-Identifier: Apache-2.0
 
-all:
-	CGO_ENABLED=0 GOOS=linux go build -ldflags "-s -w" -o build/coap-cli-linux main.go
-	CGO_ENABLED=0 GOOS=darwin go build -ldflags "-s -w" -o build/coap-cli-darwin main.go
-	CGO_ENABLED=0 GOOS=windows go build -ldflags "-s -w" -o build/coap-cli-windows main.go
+INSTALL_DIR=/usr/local/bin
+BUILD_DIR=build
+BUILD_FLAGS=-ldflags "-s -w"
+
+.PHONY: all linux darwin windows install install-linux
+
+all: linux darwin windows
+
+linux:
+	CGO_ENABLED=0 GOOS=linux go build $(BUILD_FLAGS) -o $(BUILD_DIR)/coap-cli-linux main.go
+
+darwin:
+	CGO_ENABLED=0 GOOS=darwin go build $(BUILD_FLAGS) -o $(BUILD_DIR)/coap-cli-darwin main.go
+
+windows:
+	CGO_ENABLED=0 GOOS=windows go build $(BUILD_FLAGS) -o $(BUILD_DIR)/coap-cli-windows main.go
+	
+install: install-linux 
+
+install-linux:
+	@cp $(BUILD_DIR)/coap-cli-linux $(INSTALL_DIR)/coap-cli || { echo "Installation failed"; exit 1; }
+
+clean:
+	rm -rf $(BUILD_DIR)/*

README.md

@@ -18,10 +18,13 @@ Available Commands:
 
 Flags:
   -a, --auth string           Auth
+  -A, --ca-file string        Client CA file
+  -C, --cert-file string      Client certificate file
   -c, --content-format int    Content format (default 50)
   -h, --help                  help for coap-cli
   -H, --host string           Host (default "localhost")
   -k, --keep-alive uint       Send a ping after interval seconds of inactivity. If not specified (or 0), keep-alive is disabled (default).
+  -K, --key-file string       Client key file
   -m, --max-retries uint32    Max retries for keep alive (default 10)
   -O, --options num,text      Add option num with contents of text to the request. If the text begins with 0x, then the hex text (two [0-9a-f] per byte) is converted to binary data.
   -p, --port string           Port (default "5683")
@@ -44,14 +47,23 @@ coap-cli get m/aa844fac-2f74-4ec3-8318-849b95d03bcc/c/0bb5ba61-a66e-4972-bab6-26
 coap-cli get m/aa844fac-2f74-4ec3-8318-849b95d03bcc/c/0bb5ba61-a66e-4972-bab6-26f19962678f/subtopic --options 6,0x00 --options 15,auth=1e1017e6-dee7-45b4-8a13-00e6afeb66eb
 ```
 
+```bash
+coap-cli get m/aa844fac-2f74-4ec3-8318-849b95d03bcc/c/0bb5ba61-a66e-4972-bab6-26f19962678f/subtopic --options 6,0x00 --options 15,auth=1e1017e6-dee7-45b4-8a13-00e6afeb66eb --ca-file ssl/certs/ca.crt --cert-file ssl/certs/client.crt --key-file ssl/certs/client.key
+```
+
 ```bash
 coap-cli post m/aa844fac-2f74-4ec3-8318-849b95d03bcc/c/0bb5ba61-a66e-4972-bab6-26f19962678f/subtopic --auth 1e1017e6-dee7-45b4-8a13-00e6afeb66eb -d "hello world"
 ```
 
+
 ```bash
 coap-cli post m/aa844fac-2f74-4ec3-8318-849b95d03bcc/c/0bb5ba61-a66e-4972-bab6-26f19962678f/subtopic --auth 1e1017e6-dee7-45b4-8a13-00e6afeb66eb -d "hello world" -H 0.0.0.0 -p 1234
 ```
 
 ```bash
 coap-cli post m/aa844fac-2f74-4ec3-8318-849b95d03bcc/c/0bb5ba61-a66e-4972-bab6-26f19962678f/subtopic --options 15,auth=1e1017e6-dee7-45b4-8a13-00e6afeb66eb -d "hello world" -H 0.0.0.0 -p 5683
 ```
+
+```bash
+coap-cli post channels/0bb5ba61-a66e-4972-bab6-26f19962678f/messages/subtopic --auth 1e1017e6-dee7-45b4-8a13-00e6afeb66eb -d "hello world" --ca-file ssl/certs/ca.crt --cert-file ssl/certs/client.crt --key-file ssl/certs/client.key
+```

coap/client.go

@@ -11,6 +11,8 @@ import (
 	"log"
 	"time"
 
+	piondtls "github.com/pion/dtls/v3"
+	"github.com/plgd-dev/go-coap/v3/dtls"
 	"github.com/plgd-dev/go-coap/v3/message"
 	"github.com/plgd-dev/go-coap/v3/message/codes"
 	"github.com/plgd-dev/go-coap/v3/message/pool"
@@ -39,12 +41,18 @@ type Client struct {
 }
 
 // NewClient returns new CoAP client connecting it to the server.
-func NewClient(addr string, keepAlive uint64, maxRetries uint32) (Client, error) {
+func NewClient(addr string, keepAlive uint64, maxRetries uint32, dtlsConfig *piondtls.Config) (Client, error) {
 	var dialOptions []udp.Option
 	if keepAlive > 0 {
 		dialOptions = append(dialOptions, options.WithKeepAlive(maxRetries, time.Duration(keepAlive)*time.Second, onInactive))
 	}
-	c, err := udp.Dial(addr, dialOptions...)
+	var c *client.Conn
+	var err error
+	if dtlsConfig != nil {
+		c, err = dtls.Dial(addr, dtlsConfig, dialOptions...)
+	} else {
+		c, err = udp.Dial(addr, dialOptions...)
+	}
 	if err != nil {
 		return Client{}, errors.Join(errDialFailed, err)
 	}

go.mod

@@ -1,26 +1,26 @@
 module github.com/absmach/coap-cli
 
-go 1.24
+go 1.25.0
 
 require (
 	github.com/fatih/color v1.18.0
+	github.com/pion/dtls/v3 v3.0.7
 	github.com/plgd-dev/go-coap/v3 v3.4.0
-	github.com/spf13/cobra v1.9.1
+	github.com/spf13/cobra v1.10.1
 )
 
 require (
 	github.com/dsnet/golib/memfile v1.0.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/pion/dtls/v3 v3.0.6 // indirect
 	github.com/pion/logging v0.2.4 // indirect
 	github.com/pion/transport/v3 v3.0.7 // indirect
-	github.com/spf13/pflag v1.0.7 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
-	golang.org/x/crypto v0.40.0 // indirect
-	golang.org/x/exp v0.0.0-20250718183923-645b1fa84792 // indirect
-	golang.org/x/net v0.42.0 // indirect
+	golang.org/x/crypto v0.41.0 // indirect
+	golang.org/x/exp v0.0.0-20250819193227-8b4c13bb791b // indirect
+	golang.org/x/net v0.43.0 // indirect
 	golang.org/x/sync v0.16.0 // indirect
-	golang.org/x/sys v0.34.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
 )

go.sum

@@ -11,8 +11,8 @@ github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHP
 github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/pion/dtls/v3 v3.0.6 h1:7Hkd8WhAJNbRgq9RgdNh1aaWlZlGpYTzdqjy9x9sK2E=
-github.com/pion/dtls/v3 v3.0.6/go.mod h1:iJxNQ3Uhn1NZWOMWlLxEEHAN5yX7GyPvvKw04v9bzYU=
+github.com/pion/dtls/v3 v3.0.7 h1:bItXtTYYhZwkPFk4t1n3Kkf5TDrfj6+4wG+CZR8uI9Q=
+github.com/pion/dtls/v3 v3.0.7/go.mod h1:uDlH5VPrgOQIw59irKYkMudSFprY9IEFCqz/eTz16f8=
 github.com/pion/logging v0.2.4 h1:tTew+7cmQ+Mc1pTBLKH2puKsOvhm32dROumOZ655zB8=
 github.com/pion/logging v0.2.4/go.mod h1:DffhXTKYdNZU+KtJ5pyQDjvOAh/GsNSyv1lbkFbe3so=
 github.com/pion/transport/v3 v3.0.7 h1:iRbMH05BzSNwhILHoBoAPxoB9xQgOaJk+591KC9P1o0=
@@ -22,26 +22,26 @@ github.com/plgd-dev/go-coap/v3 v3.4.0/go.mod h1:azpceqoHFeGzzNVm3RX4ox6xKHLOJ+pD
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/spf13/cobra v1.9.1 h1:CXSaggrXdbHK9CF+8ywj8Amf7PBRmPCOJugH954Nnlo=
-github.com/spf13/cobra v1.9.1/go.mod h1:nDyEzZ8ogv936Cinf6g1RU9MRY64Ir93oCnqb9wxYW0=
-github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/spf13/pflag v1.0.7 h1:vN6T9TfwStFPFM5XzjsvmzZkLuaLX+HS+0SeFLRgU6M=
-github.com/spf13/pflag v1.0.7/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/spf13/cobra v1.10.1 h1:lJeBwCfmrnXthfAupyUTzJ/J4Nc1RsHC/mSRU2dll/s=
+github.com/spf13/cobra v1.10.1/go.mod h1:7SmJGaTHFVBY0jW4NXGluQoLvhqFQM+6XSKD+P4XaB0=
+github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
+github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
 go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
-golang.org/x/crypto v0.40.0 h1:r4x+VvoG5Fm+eJcxMaY8CQM7Lb0l1lsmjGBQ6s8BfKM=
-golang.org/x/crypto v0.40.0/go.mod h1:Qr1vMER5WyS2dfPHAlsOj01wgLbsyWtFn/aY+5+ZdxY=
-golang.org/x/exp v0.0.0-20250718183923-645b1fa84792 h1:R9PFI6EUdfVKgwKjZef7QIwGcBKu86OEFpJ9nUEP2l4=
-golang.org/x/exp v0.0.0-20250718183923-645b1fa84792/go.mod h1:A+z0yzpGtvnG90cToK5n2tu8UJVP2XUATh+r+sfOOOc=
-golang.org/x/net v0.42.0 h1:jzkYrhi3YQWD6MLBJcsklgQsoAcw89EcZbJw8Z614hs=
-golang.org/x/net v0.42.0/go.mod h1:FF1RA5d3u7nAYA4z2TkclSCKh68eSXtiFwcWQpPXdt8=
+golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
+golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
+golang.org/x/exp v0.0.0-20250819193227-8b4c13bb791b h1:DXr+pvt3nC887026GRP39Ej11UATqWDmWuS99x26cD0=
+golang.org/x/exp v0.0.0-20250819193227-8b4c13bb791b/go.mod h1:4QTo5u+SEIbbKW1RacMZq1YEfOBqeXa19JeshGi+zc4=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
 golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.34.0 h1:H5Y5sJ2L2JRdyv7ROF1he/lPdvFsd0mJHFw2ThKHxLA=
-golang.org/x/sys v0.34.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=