Merge branch 'develop-eduard' into develop

This commit does not add tests that verify the exact limit,
because pinging 100000 localhost addresses takes over 15
minutes on my PC.  I have tested this fix manually.

.dockerignore

@@ -0,0 +1,30 @@
+.*.swp
+*.tar.gz
+*~
+src/*.gcno
+src/*.gcda
+src/*.gcov
+src/tags
+.deps
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+compile
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+missing
+src/*.o
+src/fping
+src/fping6
+stamp-h1
+doc/fping.8
+doc/fping6.8
+ci/build

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,67 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ develop ]
+  schedule:
+    - cron: '38 4 * * 3'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://git.io/codeql-language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2

.github/workflows/test.yml

@@ -0,0 +1,108 @@
+name: Test
+on: [push, pull_request]
+jobs:
+  Test-Linux:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, ubuntu-22.04]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update -qq 
+          sudo apt-get install libcap2-bin libtest-command-perl lcov
+          sudo sysctl net.ipv4.ping_group_range='0 2147483647'
+
+      - name: Build
+        run: |
+          ci/build-1-autotools.sh
+          ci/build-4-compile.sh
+          ci/test-tarball.sh
+
+      - name: Test
+        run: |
+          set -ex
+          PATH=`pwd`/src:$PATH
+          # avoid pinging internet hosts because it doesn't
+          # work with GitHub Actions being hosted in Azure.
+          prove $(ls ci/test-*.pl|grep -v internet-hosts)
+          ci/run-lcov.sh
+
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: lcov.info
+          flag-name: ${{ matrix.os }}
+          parallel: true
+
+
+
+  Test-Mac:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: |
+          brew install automake lcov
+          ci/build-2-test-command.sh
+          ci/build-3-prepare-macos.sh
+
+      - name: Build
+        run: |
+          ci/build-4-compile.sh
+
+      - name: Test
+        run: |
+          set -ex
+          PATH=`pwd`/src:$PATH
+          export SKIP_IPV6=1
+          prove $(ls ci/test-*.pl|grep -v internet-hosts)
+          ci/run-lcov.sh
+
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: lcov.info
+          flag-name: macos
+          parallel: true
+
+  Coveralls-Finish:
+    needs: [Test-Linux, Test-Mac]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          parallel-finished: true
+
+  Release-Tarball:
+    needs: [Test-Linux, Test-Mac]
+    if: ${{ github.event_name == 'push' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update -qq 
+          sudo apt-get install libcap2-bin libtest-command-perl
+
+      - name: Build
+        run: |
+          ci/build-1-autotools.sh
+          ci/build-4-compile.sh
+          ci/test-tarball.sh
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: fping-*.tar.gz

.travis.yml

@@ -26,23 +26,20 @@ addons:
     packages:
       - libcap2-bin
       - libtest-command-perl
-  coverity_scan:
-    project:
-      name: "schweikert/fping"
-      description: "Build submitted via Travis CI"
-    notification_email: david@schweikert.ch
-    build_command:   "ci/build-3-compile.sh"
-    branch_pattern: coverity_scan
     
 script:
   - ci/build-4-compile.sh
   - ci/run-tests.sh
+
+after_success:
   - ci/deploy-coveralls.sh
 
 stages:
   - test
   - name: deploy
     if: branch = master OR branch = v4.x
+  - name: coverity
+    if: branch = master OR branch = coverity_scan
 
 jobs:
   include:
@@ -86,5 +83,16 @@ jobs:
       name: deploy
       os: linux
       dist: xenial
+      env:
+        - SKIP_IPV6=1
       after_success:
         - ci/deploy-bintray.sh
+
+    #### STAGE: coverity
+    - stage: coverity
+      name: coverity
+      os: linux
+      dist: xenial
+      after_success:
+      script:
+        - ci/deploy-coverity.sh

.vscode/launch.json

@@ -0,0 +1,35 @@
+{
+  "configurations": [
+    {
+      "name": "Debug fping",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "${workspaceFolder}/src/fping",
+      "args": ["127.0.0.1"],
+      "stopAtEntry": false,
+      "cwd": "${workspaceFolder}",
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        },
+        {
+          "description": "Set Disassembly Flavor to Intel",
+          "text": "-gdb-set disassembly-flavor intel",
+          "ignoreFailures": true
+        }
+      ],
+      "preLaunchTask": "build",
+      "postDebugTask": "autoclean",
+      "miDebuggerPath": "/usr/bin/gdb",
+      "logging": {
+        "engineLogging": false
+      }
+    }
+  ],
+  "version": "2.0.0"
+}

.vscode/tasks.json

@@ -0,0 +1,45 @@
+{
+  "tasks": [
+    {
+      "type": "shell",
+      "label": "autogen",
+      "command": "./autogen.sh",
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": []
+    },
+    {
+      "type": "shell",
+      "label": "configure",
+      "command": "./configure",
+      "args": ["--enable-debug"],
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "dependsOn": ["autogen"],
+      "problemMatcher": []
+    },
+    {
+      "type": "shell",
+      "label": "build",
+      "command": "make",
+      "args": ["CFLAGS=\"-g -O0\""],
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "dependsOn": ["configure"],
+      "problemMatcher": ["$gcc"]
+    },
+    {
+      "type": "shell",
+      "label": "autoclean",
+      "command": "./autoclean.sh",
+      "problemMatcher": []
+    }
+  ],
+  "version": "2.0.0"
+}

CHANGELOG.md

@@ -1,4 +1,63 @@
-fping 5.0 (unreleased)
+fping 5.2 (2024-04-21)
+======================
+
+## New features
+
+- New option -X / --fast-reachable to exit immediately once N hosts have been
+  found (#260, thanks @chriscray and @gsnw)
+
+- New option -k / -fwmark to set Linux fwmark mask (#289, thanks @tomangert and
+  @deepkv)
+
+## Bugfixes and other changes
+
+- Always output fatal error messages (#303, thanks @auerswal)
+- Fallback to SO\_TIMESTAMP if SO\_TIMESTAMPNS is not available (#279, thanks
+  @gsnw)
+- Fix "not enough sequence numbers available" error on BSD-like systems (#307,
+  thanks @cagney, @gsnw)
+- Fix running in unprivileged mode (#248, thanks @sfan5)
+- Fix build issue for NetBSD/alpha (#255, thanks @0-wiz-0)
+- Fix build issue for OpenBSD/alpha (#275, thanks @gsnw)
+- Fix build warning for long int usage (#258, thanks @gsnw)
+- Fix build error with musl libc (#263, thanks @kraj)
+- Fix to guard against division by zero (#293, thanks @auerswal)
+- Decouple -a/-u effects from -c (#298, thanks @auerswal)
+- Added contrib/Dockerfile (#224, thanks @darless)
+- Remove host from Netdata chart titles (#253, thanks @ilyam8)
+- Add additional tests (#292, #297, thanks @auerswal)
+- Update github action os images (#282, thanks @gsnw)
+- Fix Azure pipeline tests (#308, thanks @gsnw)
+- Various autoconf fixes (#286, #283, thanks @gsnw)
+- Extended configure script with --enable-debug and output cpu usage (#311,
+  thanks @gsnw)
+- Documentation: Update Netdata website link (#257, thanks @ilyam8)
+- Documentation: fix description of --file option (#268, thanks @MohGeek)
+- Documentation: improve exit status description (#294, thanks @auerswal)
+- Documentation: move description of -i MSEC (#298, thanks @auerswal)
+- Documentation: improve help output for options -c and -C (#302, #auerswal)
+
+
+fping 5.1 (2022-02-06)
+======================
+
+## Bugfixes and other changes
+
+- Use setcap to specify specific files in fping.spec (#232, thanks @zdyxry)
+- Netdata: use host instead name as family label (#226, thanks @k0ste)
+- Netdata: use formatstring macro PRId64 (#229, thanks @gsnw)
+- Allow -4 option to be given multiple times (#215, thanks @normanr)
+- Documentation fix (#208, thanks @timgates42)
+- Retain privileges until after privileged setsockopt (#200, thanks @simetnicbr)
+- Set bind to source only when option is set (#198, thanks @dinoex)
+- Update Azure test pipeline (#197, thanks @gsnw)
+- Fix getnameinfo not called properly for IPv4 (#227, thanks @aafbsd)
+- Fixed wrong timestamp under Free- and OpenBSD and macOS (#217, thanks @gsnw)
+- Documentation updates (#240, thanks @auerswal)
+- Updated autotools (autoconf 2.71, automake 1.16.5, libtool 2.4.6)
+
+
+fping 5.0 (2020-08-05)
 ======================
 
 ## Incompatible Changes
@@ -36,10 +95,10 @@ fping 5.0 (unreleased)
 ## Bugfixes and other changes
 
 - The reported size of received packets is now always correct on Linux even for
-  packets > 4096 bytes.
+  packets > 4096 bytes (#180)
 
 - Travis CI automated testing now also macos testing and additional ubuntu
-  distributions.
+  distributions (#196)
 
 fping 4.4 (2020-07-24)
 ======================

README.md

@@ -1,5 +1,5 @@
 [![Build Status](https://travis-ci.org/schweikert/fping.svg?branch=develop)](https://travis-ci.org/schweikert/fping)
-[![Coverage Status](https://coveralls.io/repos/schweikert/fping/badge.svg?branch=develop&service=github)](https://coveralls.io/github/schweikert/fping?branch=develop)
+[![Coverage Status](https://coveralls.io/repos/github/schweikert/fping/badge.svg?branch=develop)](https://coveralls.io/github/schweikert/fping?branch=develop)
 [![Coverity Scan Build Status](https://scan.coverity.com/projects/11559/badge.svg?flat=1")](https://scan.coverity.com/projects/schweikert-fping)
 
 # fping
@@ -28,13 +28,14 @@ If you want to install fping from source, proceed as follows:
    (see: `./configure --help`)
 2. Run `make; make install`.
 3. Make fping either setuid, or, if under Linux:
-   `sudo setcap cap_net_raw+ep fping`
+   `sudo setcap cap_net_raw,cap_net_admin+ep fping`
 
 If you can't run fping as root or can't use the cap_net_raw capability, you can
 also run fping in unprivileged mode. This works on MacOS and also on Linux,
 provided that your GID is included in the range defined in
 `/proc/sys/net/ipv4/ping_group_range`. This is particularly useful for running
-fping in rootless / unprivileged containers.
+fping in rootless / unprivileged containers. The --fwmark option needs root or
+cap_net_admin. setuid will not work for --fwmark.
 
 ## Usage
 

autoclean.sh

@@ -4,6 +4,7 @@ rm -f Makefile
 rm -f Makefile.in
 rm -f aclocal.m4
 rm -rf autom4te.cache
+rm -f compile
 rm -f config.guess
 rm -f config.h
 rm -f config.h.in
@@ -16,7 +17,9 @@ rm -f install-sh
 rm -f missing
 rm -f mkinstalldirs
 rm -f stamp-h1
+rm -f doc/Makefile
 rm -f doc/Makefile.in
+rm -f src/Makefile
 rm -f src/Makefile.in
 rm -f doc/fping.8
 rm -f src/*.gcda

azure-pipelines.yml

@@ -2,25 +2,51 @@ jobs:
 - job: linux_build
   displayName: Linux Build
 
-  pool: Hosted Ubuntu 1604
+  pool:
+    name: Azure Pipelines
+    vmImage: 'ubuntu-latest'
   workspace:
     clean: all
   steps:
   - script: |
      sudo apt-get update -qq
-     sudo apt-get install libcap2-bin
-     echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' |  sudo tee -a /etc/ssl/certs/ca-
+     sudo apt-get install libcap2-bin libtest-command-perl
     displayName: 'before_install'
 
   - script: |
-     ci/build-1-autotools.sh
-     curl -L http://cpanmin.us | perl - --sudo App::cpanminus
-     cpanm --sudo Test::Command
+     ci/build-4-compile.sh
     displayName: install
 
   - script: |
-     ci/build-2-install.sh
-     env PATH=`pwd`/src:$PATH prove ci/test-{01..13}*.pl
-     env PATH=`pwd`/src:$PATH prove ci/test-15*.pl
+     set -ex
+     PATH=`pwd`/src:$PATH
+     prove $(ls ci/test-*.pl|grep -v internet-hosts|grep -v -E "test-13-unknown-host.pl|test-14-ping-internet-hosts.pl")
      ci/test-tarball.sh
     displayName: 'build_test'
+
+- job: macos_build
+  displayName: macOS Build
+
+  pool:
+    name: Azure Pipelines
+    vmImage: 'macos-latest'
+  workspace:
+    clean: all
+  steps:
+    - script: |
+       brew install autoconf automake lcov
+       ci/build-2-test-command.sh
+       ci/build-3-prepare-macos.sh
+      displayName: 'before_install'
+
+    - script: |
+       ci/build-4-compile.sh
+      displayName: install
+
+    - script: |
+       set -ex
+       PATH=`pwd`/src:$PATH
+       export SKIP_IPV6=1
+       prove $(ls ci/test-*.pl|grep -v internet-hosts|grep -v test-10-option-u-x.pl)
+       ci/run-lcov.sh
+      displayName: 'build_test'

ci/build-1-autotools.sh

@@ -1,12 +1,15 @@
-#!/bin/bash -e
+#!/bin/bash
+
+set -e
+set -x
 
 if [[ "$OSTYPE" == "darwin"* ]]; then
     exit 0
 fi
 
-AUTOCONF=http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
-AUTOMAKE=http://ftp.gnu.org/gnu/automake/automake-1.14.1.tar.gz
-LIBTOOL=http://alpha.gnu.org/gnu/libtool/libtool-2.4.2.418.tar.gz
+AUTOCONF=http://ftp.gnu.org/gnu/autoconf/autoconf-2.71.tar.gz
+AUTOMAKE=http://ftp.gnu.org/gnu/automake/automake-1.16.5.tar.gz
+LIBTOOL=http://ftp.gnu.org/gnu/libtool/libtool-2.4.6.tar.gz
 PREFIX=$(pwd)/ci/build
 PATH=$(pwd)/ci/build/bin:$PATH
 

ci/build-2-test-command.sh

@@ -2,6 +2,5 @@
 
 set -ex
 
-curl -L http://cpanmin.us | perl - --sudo App::cpanminus
-cpanm --sudo Test::Command
-
+curl -L http://cpanmin.us | perl - -L $HOME/perl5 App::cpanminus
+$HOME/perl5/bin/cpanm --sudo Test::Command

ci/deploy-coverity.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+set -e
+
+COVERITY_SCAN_PROJECT_NAME=schweikert/fping
+COVERITY_SCAN_EMAIL=david@schweikert.ch
+
+if [ -z "$COVERITY_SCAN_TOKEN" ]; then
+    echo "ERROR: COVERITY_SCAN_TOKEN not defined." >&2
+    exit 1
+fi
+
+curl -o /tmp/cov-analysis-linux64.tgz https://scan.coverity.com/download/linux64 \
+    --form project=$COVERITY_SCAN_PROJECT_NAME --form token=$COVERITY_SCAN_TOKEN
+tar xfz /tmp/cov-analysis-linux64.tgz
+./autogen.sh
+./configure --enable-ipv4 --enable-ipv6 --enable-safe-limits --prefix=/opt/fping
+cov-analysis-linux64-*/bin/cov-build --dir cov-int make -j4
+tar cfz cov-int.tar.gz cov-int
+curl https://scan.coverity.com/builds?project=$COVERITY_SCAN_PROJECT_NAME \
+    --form token=$COVERITY_SCAN_TOKEN \
+    --form email=$COVERITY_SCAN_EMAIL \
+    --form file=@cov-int.tar.gz \
+    --form version="`git rev-parse --short HEAD`" \
+    --form description="`git rev-parse --short HEAD` / $TRAVIS_BUILD_ID "

ci/prepare-linux.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-sudo setcap cap_net_raw+ep src/fping
+sudo setcap cap_net_raw,cap_net_admin+ep src/fping
 
 if [[ ! $PATH =~ fping/src ]]; then
     PATH=/home/dws/checkouts/fping/src:$PATH

ci/run-lcov.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+lcov -c -no-external \
+    -d . \
+    -b src \
+    -o lcov-all.info
+
+lcov --remove lcov-all.info -o lcov.info \
+    '*/optparse.c'

ci/test-01-basics.pl

@@ -1,6 +1,6 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 9;
+use Test::Command tests => 12;
 use Test::More;
 
 # ping 127.0.0.1
@@ -23,6 +23,18 @@ SKIP: {
     $cmd->stderr_is_eq("");
 }
 
+# ping ff02::1
+SKIP: {
+    #system("/sbin/ifconfig >&2");
+    if($ENV{SKIP_IPV6}) {
+        skip 'Skip IPv6 tests', 3;
+    }
+    my $cmd = Test::Command->new(cmd => "fping ff02::1");
+    $cmd->exit_is_num(0);
+    $cmd->stdout_is_eq("ff02::1 is alive\n");
+    $cmd->stderr_like(qr{ \[<- .*\]});
+}
+
 # ping 3 times 127.0.0.1
 {
     my $cmd = Test::Command->new(cmd => "fping -p 100 -C3 127.0.0.1");

ci/test-02-help.pl

@@ -1,11 +1,11 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 9;
+use Test::Command tests => 12;
 
 my $I_HELP = "   -I, --iface=IFACE  bind to a particular interface\n";
 $I_HELP = '' if $^O eq 'darwin';
 
-# fping -h
+# fping -h (special pre-parse code path)
 my $cmd1 = Test::Command->new(cmd => "fping -h");
 $cmd1->exit_is_num(0);
 $cmd1->stdout_like(qr{Usage: fping \[options\] \[targets\.\.\.\]
@@ -16,6 +16,17 @@ Probing options:
 }s);
 $cmd1->stderr_is_eq("");
 
+# fping -4 -h (normal option parsing code path)
+my $cmd4 = Test::Command->new(cmd => "fping -4 -h");
+$cmd4->exit_is_num(0);
+$cmd4->stdout_like(qr{Usage: fping \[options\] \[targets\.\.\.\]
+
+Probing options:
+.*
+   -v, --version      show version
+}s);
+$cmd4->stderr_is_eq("");
+
 # fping -v
 my $cmd2 = Test::Command->new(cmd => "fping -v");
 $cmd2->exit_is_num(0);

ci/test-03-forbidden.pl

@@ -1,6 +1,6 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 24;
+use Test::Command tests => 36;
 
 # fping -i 0
 my $cmd1 = Test::Command->new(cmd => "fping -i 0 -T10 -g 127.0.0.1/29");
@@ -50,9 +50,16 @@ $cmd9->exit_is_num(1);
 $cmd9->stdout_is_eq("");
 $cmd9->stderr_is_eq("fping: backoff factor 0.9 not valid, must be between 1.0 and 5.0\n");
 
-# fping -B 0.9
+# fping -B 5.1
 my $cmd10 = Test::Command->new(cmd => "fping -B 5.1 127.0.0.1");
 $cmd10->exit_is_num(1);
 $cmd10->stdout_is_eq("");
 $cmd10->stderr_is_eq("fping: backoff factor 5.1 not valid, must be between 1.0 and 5.0\n");
 
+# non-negative only
+for my $arg (qw(i p Q t)) {
+    my $cmd = Test::Command->new(cmd => "fping -$arg -1");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_like(qr{Usage:});
+}

ci/test-04-options-a-b.pl

@@ -85,14 +85,17 @@ $cmd->stderr_is_eq("");
 }
 
 # fping -B
-{
-my $t0 = [gettimeofday];
-my $cmd = Test::Command->new(cmd => "fping  -t 100 -r 3 -B 2  8.8.8.7");
-$cmd->exit_is_num(1);
-$cmd->stdout_is_eq("8.8.8.7 is unreachable\n");
-$cmd->stderr_like(qr{^(|(8.8.8.7: error while sending ping: No route to host\n)+)$});
-my $elapsed = tv_interval($t0);
-# 0.1 + 0.2 + 0.4 + 0.8 = 1.5
-cmp_ok($elapsed, '>=', 1.5);
-cmp_ok($elapsed, '<', 1.8);
+SKIP: {
+    if($^O eq 'darwin') {
+        skip 'timing test not reliable on macOS', 5;
+    }
+    my $t0 = [gettimeofday];
+    my $cmd = Test::Command->new(cmd => "fping  -t 100 -r 3 -B 2  8.8.8.7");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("8.8.8.7 is unreachable\n");
+    $cmd->stderr_like(qr{^(|(8.8.8.7: error while sending ping: No route to host\n)+)$});
+    my $elapsed = tv_interval($t0);
+    # 0.1 + 0.2 + 0.4 + 0.8 = 1.5
+    cmp_ok($elapsed, '>=', 1.5);
+    cmp_ok($elapsed, '<', 1.9);
 }

ci/test-05-options-c-e.pl

@@ -1,6 +1,6 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 12;
+use Test::Command tests => 51;
 
 #  -c n       count of pings to send to each target (default 1)
 #  -C n       same as -c, report results in verbose format
@@ -22,6 +22,46 @@ $cmd->stderr_like(qr{localhost : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\
 });
 }
 
+# fping -c n -q
+{
+my $cmd = Test::Command->new(cmd => "fping -q -c 2 -p 100 localhost 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{localhost : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -c n -a (-a is ignored)
+{
+my $cmd = Test::Command->new(cmd => "fping -a -c 2 -p 100 localhost 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{localhost : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+localhost : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{localhost : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -c n -u (-u is ignored)
+{
+my $cmd = Test::Command->new(cmd => "fping -u -c 2 -p 100 localhost 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{localhost : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+localhost : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{localhost : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
 # fping -C n
 {
 my $cmd = Test::Command->new(cmd => "fping -4 -C 2 -p 100 localhost 127.0.0.1");
@@ -37,6 +77,55 @@ $cmd->stderr_like(qr{localhost : \d\.\d+ \d\.\d+
 });
 }
 
+# fping -C n -q
+{
+my $cmd = Test::Command->new(cmd => "fping -C 5 -q -p 100 localhost");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{localhost :( \d\.\d+){5}
+});
+}
+
+# fping -C n -a (-a is ignored)
+{
+my $cmd = Test::Command->new(cmd => "fping -a -C 2 -p 100 localhost 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{localhost : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+localhost : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{localhost : \d\.\d+ \d\.\d+
+127\.0\.0\.1 : \d\.\d+ \d\.\d+
+});
+}
+
+# fping -C n -u (-u is ignored)
+{
+my $cmd = Test::Command->new(cmd => "fping -u -C 2 -p 100 localhost 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{localhost : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+localhost : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{localhost : \d\.\d+ \d\.\d+
+127\.0\.0\.1 : \d\.\d+ \d\.\d+
+});
+}
+
+# fping -C n -i -q
+{
+my $cmd = Test::Command->new(cmd => "fping --quiet --interval=1 --vcount=20 --period=50 127.0.0.1 127.0.0.2");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{127\.0\.0\.1 :( \d\.\d+){20}
+127\.0\.0\.2 :( \d\.\d+){20}
+});
+}
+
 # fping -D
 {
 my $cmd = Test::Command->new(cmd => "fping -D -c 2 -p 100 127.0.0.1");
@@ -49,6 +138,69 @@ $cmd->stderr_like(qr{127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d
 });
 }
 
+# fping -D (timestamp not before 2001-09-09)
+{
+my $cmd = Test::Command->new(cmd => "fping -D -c 2 -p 100 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{\[[1-9]\d{9,}\.\d+\] 127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+\[[1-9]\d{9,}\.\d+\] 127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+$cmd->stderr_like(qr{127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -D --timestamp-format=ctime
+{
+my $cmd = Test::Command->new(cmd => "fping -D --timestamp-format=ctime -c 2 -p 100 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{\[\w+\s\w+\s+\d+\s[\d+:]+\s\d+\] 127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+\[\w+\s\w+\s+\d+\s[\d+:]+\s\d+\] 127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -D --timestamp-format=iso
+{
+my $cmd = Test::Command->new(cmd => "fping -D --timestamp-format=iso -c 2 -p 100 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{\[[\d+-]+T[\d+:]+\+\d+\] 127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+\[[\d+-]+T[\d+:]+\+\d+\] 127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -D --timestamp-format=rfc3339
+{
+my $cmd = Test::Command->new(cmd => "fping -D --timestamp-format=rfc3339 -c 2 -p 100 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_like(qr{\[[\d+-]+\s[\d+:]+\] 127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+\[[\d+-]+\s[\d+:]+\] 127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+
+$cmd->stderr_like(qr{127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -D --timestamp-format
+{
+my $cmd = Test::Command->new(cmd => "fping -D --timestamp-format -c 2 -p 100 127.0.0.1");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{Usage:});
+}
+
+# fping -D --timestamp-format="%Y-%m-%d %H:%M:%S"
+{
+my $cmd = Test::Command->new(cmd => "fping -D --timestamp-format=\"%Y-%m-%d %H:%M:%S\" -c 2 -p 100 127.0.0.1");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{Usage:});
+}
+
 # fping -e
 {
 my $cmd = Test::Command->new(cmd => "fping -e 127.0.0.1");

ci/test-06-options-f-h.pl

@@ -1,6 +1,7 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 24;
+use Test::Command tests => 75;
+use Test::More;
 use File::Temp;
 
 #  -f file    read list of targets from a file ( - means stdin) (only if no -g specified)
@@ -13,6 +14,10 @@ my $tmpfile = File::Temp->new();
 print $tmpfile "127.0.0.1\n127.0.0.2\n";
 close($tmpfile);
 
+my $tmpfile2 = File::Temp->new();
+print $tmpfile2 "# comment\n127.0.0.1\n\n127.0.0.2\n";
+close($tmpfile2);
+
 # fping without option (-> equivalent to 'fping -f -')
 {
 my $cmd = Test::Command->new(cmd => "cat ".$tmpfile->filename." | fping");
@@ -37,6 +42,70 @@ $cmd->stdout_is_eq("127.0.0.1 is alive\n127.0.0.2 is alive\n");
 $cmd->stderr_is_eq("");
 }
 
+# fping -f file (with comment and empty line)
+{
+my $cmd = Test::Command->new(cmd => "fping -f ".$tmpfile2->filename);
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("127.0.0.1 is alive\n127.0.0.2 is alive\n");
+$cmd->stderr_is_eq("");
+}
+
+# fping -f non-existing-file (error)
+{
+my $cmd = Test::Command->new(cmd => "fping -f file-does-not-exist");
+$cmd->exit_is_num(4);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{: fopen :});
+}
+
+# fping -g (error: no argument)
+{
+my $cmd = Test::Command->new(cmd => "fping -g");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{^Usage: fping \[options\] \[targets\.\.\.\]});
+}
+
+# fping -g (error: single argument, but not in cidr format)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.1");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{^Usage: fping \[options\] \[targets\.\.\.\]});
+}
+
+# fping -g (error: CIDR network is not an IP address)
+{
+my $cmd = Test::Command->new(cmd => "fping -g xxx/32");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{can't parse address xxx});
+}
+
+# fping -g (error: start of range is not an IP address)
+{
+my $cmd = Test::Command->new(cmd => "fping -g xxx 127.0.0.1");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{can't parse address xxx});
+}
+
+# fping -g (error: end of range is not an IP address)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.1 yyy");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{can't parse address yyy});
+}
+
+# fping -g (error: too many arguments)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.1 127.0.0.2 127.0.0.3");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{^Usage: fping \[options\] \[targets\.\.\.\]});
+}
+
 # fping -g (range)
 {
 my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.1 127.0.0.5");
@@ -45,6 +114,22 @@ $cmd->stdout_is_eq("127.0.0.1 is alive\n127.0.0.2 is alive\n127.0.0.3 is alive\n
 $cmd->stderr_is_eq("");
 }
 
+# fping -g (empty range)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.2 127.0.0.1");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_is_eq("");
+}
+
+# fping -g (too large range)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.1 127.255.255.254");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_is_eq("fping: -g parameter generates too many addresses\n");
+}
+
 # fping -g (cidr)
 {
 my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.1/30");
@@ -53,7 +138,7 @@ $cmd->stdout_is_eq("127.0.0.1 is alive\n127.0.0.2 is alive\n");
 $cmd->stderr_is_eq("");
 }
 
-# fping -g (cidr - long prefixes)
+# fping -g (cidr - long prefixes: point-to-point)
 {
 my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.2/31");
 $cmd->exit_is_num(0);
@@ -61,6 +146,14 @@ $cmd->stdout_is_eq("127.0.0.2 is alive\n127.0.0.3 is alive\n");
 $cmd->stderr_is_eq("");
 }
 
+# fping -g (cidr - long prefixes: host)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.2/32");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("127.0.0.2 is alive\n");
+$cmd->stderr_is_eq("");
+}
+
 # fping -g (cidr - too long prefixes)
 {
 my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.2/33");
@@ -69,6 +162,66 @@ $cmd->stdout_is_eq("");
 $cmd->stderr_is_eq("fping: netmask must be between 1 and 32 (is: 33)\n");
 }
 
+# fping -g (cidr - too short prefixes)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.2/0");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_is_eq("fping: netmask must be between 1 and 32 (is: 0)\n");
+}
+
+# fping -g (cidr - too many addresses)
+{
+my $cmd = Test::Command->new(cmd => "fping -g 127.0.0.0/8");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_is_eq("fping: -g parameter generates too many addresses\n");
+}
+
+# fping -g (range - no IPv6 generator)
+SKIP: {
+    if($ENV{SKIP_IPV6}) {
+        skip 'Skip IPv6 tests', 3;
+    }
+    my $cmd = Test::Command->new(cmd => "fping -6 -g ::1 ::1");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_is_eq("fping: -g works only with IPv4 addresses\n");
+}
+
+# fping -g (range - no IPv6 generator - start address IPv6)
+SKIP: {
+    if($ENV{SKIP_IPV6}) {
+        skip 'Skip IPv6 tests', 3;
+    }
+    my $cmd = Test::Command->new(cmd => "fping -6 -g ::1 127.0.0.1");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_is_eq("fping: -g works only with IPv4 addresses\n");
+}
+
+# fping -g (range - no IPv6 generator - end address IPv6)
+SKIP: {
+    if($ENV{SKIP_IPV6}) {
+        skip 'Skip IPv6 tests', 3;
+    }
+    my $cmd = Test::Command->new(cmd => "fping -6 -g 127.0.0.1 ::1");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_is_eq("fping: -g works only with IPv4 addresses\n");
+}
+
+# fping -g (CIDR - no IPv6 generator)
+SKIP: {
+    if($ENV{SKIP_IPV6}) {
+        skip 'Skip IPv6 tests', 3;
+    }
+    my $cmd = Test::Command->new(cmd => "fping -6 -g ::1/128");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_is_eq("fping: -g works only with IPv4 addresses\n");
+}
+
 # fping -H
 {
 my $cmd = Test::Command->new(cmd => "fping -H 1 127.0.0.1");

ci/test-07-options-i-m.pl

@@ -1,10 +1,11 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 9;
+use Test::Command tests => 15;
 use Test::More;
 
 #  -i n       interval between sending ping packets (in millisec) (default 25)
 #  -l         loop sending pings forever
+#  -k         set fwmark on ping packets
 #  -m         ping multiple interfaces on target host
 #  -M         don't fragment
 
@@ -24,6 +25,17 @@ $cmd->stdout_like(qr{127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0
 });
 }
 
+# fping -k
+SKIP: {
+if($^O ne 'linux') {
+    skip '-k option is only supported on Linux', 3;
+}
+my $cmd = Test::Command->new(cmd => 'sudo env "PATH=$PATH" fping -k 256 127.0.0.1');
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("127.0.0.1 is alive\n");
+$cmd->stderr_is_eq("");
+}
+
 # fping -l with SIGQUIT
 {
 my $cmd = Test::Command->new(cmd => '(sleep 2; pkill -QUIT fping; sleep 2; pkill fping)& fping -p 900 -l 127.0.0.1');
@@ -38,6 +50,27 @@ $cmd->stderr_like(qr{\[\d+:\d+:\d+\]
 });
 }
 
+# fping -l -Q
+SKIP: {
+if($^O eq 'darwin') {
+    skip 'On macOS, this test is unreliable', 2;
+}
+my $cmd = Test::Command->new(cmd => '(sleep 2; pkill fping)& fping -p 850 -l -Q 1 127.0.0.1');
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d\d:\d\d:\d\d\]
+127\.0\.0\.1 : xmt/rcv/%loss = \d/\d/\d%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+\[\d\d:\d\d:\d\d\]
+127\.0\.0\.1 : xmt/rcv/%loss = \d/\d/\d%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -l -t
+{
+my $cmd = Test::Command->new(cmd => '(sleep 2; pkill fping)& fping -p 900 -t 1500 -l 127.0.0.1');
+$cmd->stdout_like(qr{127\.0\.0\.1 : \[0\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+127\.0\.0\.1 : \[1\], 64 bytes, \d\.\d+ ms \(\d\.\d+ avg, 0% loss\)
+});
+}
 
 # fping -M
 SKIP: {

ci/test-08-options-n-q.pl

@@ -1,6 +1,6 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 18;
+use Test::Command tests => 36;
 
 #  -n         show targets by name (-d is equivalent)
 #  -O n       set the type of service (tos) flag on the ICMP packets
@@ -68,4 +68,81 @@ $cmd->stderr_like(qr{\[\d+:\d+:\d+\]
 });
 }
 
+# fping -Q (longer test to show two time stamps and reset statistics)
+{
+my $cmd = Test::Command->new(cmd => "fping -Q 1 -p 550 -c 5 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 5/5/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -Q n ignores non-number characters after the number, except for keywords
+{
+my $cmd = Test::Command->new(cmd => "fping -Q 1whatever -p 550 -c 5 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 5/5/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -Q n ignores unknown keywords
+{
+my $cmd = Test::Command->new(cmd => "fping -Q 1,not_a_keyword -p 550 -c 5 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 5/5/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -Q n,cumulative
+{
+my $cmd = Test::Command->new(cmd => "fping -Q 1,cumulative -p 550 -c 5 127.0.0.1");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 2/2/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+\[\d+:\d+:\d+\]
+127\.0\.0\.1 : xmt/rcv/%loss = 4/4/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+127\.0\.0\.1 : xmt/rcv/%loss = 5/5/0%, min/avg/max = \d\.\d+/\d\.\d+/\d\.\d+
+});
+}
+
+# fping -Q -o
+{
+my $cmd = Test::Command->new(cmd => "fping -c4 -Q1 -p550 -o 8.8.8.7");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d+:\d+:\d+\]
+8\.8\.8\.7 : xmt/rcv/%loss = 1/0/100%, outage\(ms\) = 55\d
+\[\d+:\d+:\d+\]
+8\.8\.8\.7 : xmt/rcv/%loss = 2/0/100%, outage\(ms\) = 110\d
+8\.8\.8\.7 : xmt/rcv/%loss = 4/0/100%, outage\(ms\) = 220\d
+});
+}
+
+# fping -Q n,cumulative -o
+{
+my $cmd = Test::Command->new(cmd => "fping -c4 -Q1,cumulative -p550 -o 8.8.8.7");
+$cmd->exit_is_num(1);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{\[\d+:\d+:\d+\]
+8\.8\.8\.7 : xmt/rcv/%loss = 1/0/100%, outage\(ms\) = 55\d
+\[\d+:\d+:\d+\]
+8\.8\.8\.7 : xmt/rcv/%loss = 3/0/100%, outage\(ms\) = 165\d
+8\.8\.8\.7 : xmt/rcv/%loss = 4/0/100%, outage\(ms\) = 220\d
+});
+}
 

ci/test-09-option-r-t.pl

@@ -1,6 +1,6 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 21;
+use Test::Command tests => 27;
 use Test::More;
 
 #  -R         random bytes
@@ -84,6 +84,14 @@ $cmd->stdout_is_eq("127.0.0.1 is alive\n");
 $cmd->stderr_is_eq("");
 }
 
+# fping -S (wrong source address)
+{
+my $cmd = Test::Command->new(cmd => "fping -S 192.0.2.47 127.0.0.1");
+$cmd->exit_is_num(4);
+$cmd->stdout_is_eq("");
+$cmd->stderr_like(qr{fping: cannot bind source address : .+\n});
+}
+
 # fping -S
 SKIP: {
     if($ENV{SKIP_IPV6}) {
@@ -95,6 +103,17 @@ SKIP: {
     $cmd->stderr_is_eq("");
 }
 
+# fping -S (wrong IPv6 source address)
+SKIP: {
+    if($ENV{SKIP_IPV6}) {
+        skip 'Skip IPv6 tests', 3;
+    }
+    my $cmd = Test::Command->new(cmd => "fping -S 2001:db8::1 ::1");
+    $cmd->exit_is_num(4);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_like(qr{fping: cannot bind source address : .+\n});
+}
+
 # fping -S
 {
 my $cmd = Test::Command->new(cmd => "fping -S bla");

ci/test-10-option-u-x.pl

@@ -1,9 +1,11 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 12;
+use Test::Command tests => 15;
 
 #  -u         show targets that are unreachable
 #  -v         show version
+#  -x         shows if >=N hosts are reachable or not
+#  -X         exits true immediately when N hosts are found
 
 # fping -u
 {
@@ -36,3 +38,11 @@ $cmd->exit_is_num(1);
 $cmd->stdout_is_eq("Not enough hosts reachable (required: 2, reachable: 1)\n");
 $cmd->stderr_is_eq("");
 }
+
+# fping -X
+{
+my $cmd = Test::Command->new(cmd => "fping -X 1 --generate 127.0.0.0/29");
+$cmd->exit_is_num(0);
+$cmd->stdout_is_eq("Enough hosts reachable (required: 1, reachable: 1)\n");
+$cmd->stderr_is_eq("");
+}

ci/test-11-nopriv-fail.pl

@@ -1,43 +0,0 @@
-#!/usr/bin/perl -w
-
-use English;
-use Test::Command;
-use Test::More;
-
-if( $^O eq 'darwin' ) {
-    plan skip_all => 'Test irrelevant on MacOS';
-    exit 0;
-}
-
-sub get_ping_gid_range {
-	open FD, "/proc/sys/net/ipv4/ping_group_range" or return undef;
-	chomp(my $line = <FD>);
-	my @range = split(/\s+/, $line);
-	close FD;
-	return @range;
-}
-
-my @gids = split(' ', $EGID);
-my @allowed_gid_range = get_ping_gid_range();
-
-# Linux test for unprivileged ping support
-foreach(@gids) {
-	if ($_ >= $allowed_gid_range[0] && $_ <= $allowed_gid_range[1]) {
-		plan skip_all => "Userspace pings are allowed, gid $_ in range [$allowed_gid_range[0], $allowed_gid_range[1]]";
-		exit 0;
-	}
-}
-
-plan tests => 3;
-
-# run without privileges
-my $fping_bin = `which fping`; chomp $fping_bin;
-system("cp $fping_bin /tmp/fping.copy; chmod +x /tmp/fping.copy");
-
-# fping
-{
-my $cmd = Test::Command->new(cmd => "/tmp/fping.copy 127.0.0.1");
-$cmd->exit_is_num(4);
-$cmd->stdout_is_eq("");
-$cmd->stderr_like(qr{: can't create socket \(must run as root\?\)});
-}

ci/test-11-unpriv.pl

@@ -0,0 +1,57 @@
+#!/usr/bin/perl -w
+
+use English;
+use Test::Command;
+use Test::More;
+
+if( $^O eq 'darwin' ) {
+    plan skip_all => 'Test irrelevant on MacOS';
+    exit 0;
+}
+
+sub get_ping_gid_range {
+    open FD, "/proc/sys/net/ipv4/ping_group_range" or return undef;
+    chomp(my $line = <FD>);
+    my @range = split(/\s+/, $line);
+    close FD;
+    return @range;
+}
+
+my @gids = split(' ', $EGID);
+my @allowed = get_ping_gid_range();
+
+# Make a copy of the binary so that we get rid of setuid bit
+my $fping_bin = `which fping`; chomp $fping_bin;
+system("cp $fping_bin /tmp/fping.copy; chmod +x /tmp/fping.copy");
+
+# Determine what test to run, based on whether unprivileged
+# pings are allowed.
+if(scalar grep { $_ >= $allowed[0] && $_ <= $allowed[1] } @gids) {
+    diag('test unprivileged mode');
+    test_unprivileged_works();
+}
+else {
+    test_privileged_fails();
+}
+
+sub test_unprivileged_works {
+    plan tests => 3;
+
+    {
+        my $cmd = Test::Command->new(cmd => "fping 127.0.0.1");
+        $cmd->exit_is_num(0);
+        $cmd->stdout_is_eq("127.0.0.1 is alive\n");
+        $cmd->stderr_is_eq("");
+    }
+}
+
+sub test_privileged_fails {
+    plan tests => 3;
+
+    {
+        my $cmd = Test::Command->new(cmd => "/tmp/fping.copy 127.0.0.1");
+        $cmd->exit_is_num(4);
+        $cmd->stdout_is_eq("");
+        $cmd->stderr_like(qr{: can't create socket \(must run as root\?\)});
+    }
+}

ci/test-12-option-type.pl

@@ -1,10 +1,27 @@
 #!/usr/bin/perl -w
 
-use Test::Command tests => 33;
+use Test::Command tests => 84;
+use Test::More;
 
-for my $arg (qw(b B c C H i O p Q r t)) {
-    my $cmd = Test::Command->new(cmd => "fping -$arg xxx");
-    $cmd->exit_is_num(1);
-    $cmd->stdout_is_eq("");
-    $cmd->stderr_like(qr{Usage:});
+# some options require a numeric argument
+for my $arg (qw(b B c C H i O p Q r t x X)) {
+    for my $test_input (qw(xxx '')) {
+        my $cmd = Test::Command->new(cmd => "fping -$arg $test_input");
+        $cmd->exit_is_num(1);
+        $cmd->stdout_is_eq("");
+        $cmd->stderr_like(qr{Usage:});
+    }
+}
+
+# fping -k, only supported on Linux, requires a number
+SKIP: {
+    if($^O ne 'linux') {
+        skip '-k option is only supported on Linux', 6;
+    }
+    for my $test_input (qw(xxx '')) {
+        my $cmd = Test::Command->new(cmd => "fping -k $test_input 127.0.0.1");
+        $cmd->exit_is_num(1);
+        $cmd->stdout_is_eq("");
+        $cmd->stderr_like(qr{Usage:});
+    }
 }

ci/test-14-ping-internet-hosts.pl

@@ -15,13 +15,12 @@ my $re_num = qr{\d+(?:\.\d+)?};
 
 # fping
 {
-my $cmd = Test::Command->new(cmd => "fping -q -i 10 -p 20 -c 3 -t200  8.8.8.8 4.2.2.5 www.france-telecom.fr www.google.com");
+my $cmd = Test::Command->new(cmd => "fping -q -i 10 -p 20 -c 3 -t200  8.8.8.8 www.france-telecom.fr www.google.com");
 $cmd->exit_is_num(0);
 $cmd->stdout_is_eq("");
-$cmd->stderr_like(qr{8\.8\.8\.8\s*: xmt/rcv/%loss = [123]/3/\d+%, min/avg/max = $re_num/$re_num/$re_num
-4\.2\.2\.5\s*: xmt/rcv/%loss = [123]/3/\d+%, min/avg/max = $re_num/$re_num/$re_num
-www\.france-telecom\.fr\s*: xmt/rcv/%loss = [123]/3/\d+%, min/avg/max = $re_num/$re_num/$re_num
-www\.google\.com\s*: xmt/rcv/%loss = [123]/3/\d+%, min/avg/max = $re_num/$re_num/$re_num
+$cmd->stderr_like(qr{8\.8\.8\.8\s*: xmt/rcv/%loss = [123]/[123]/\d+%, min/avg/max = $re_num/$re_num/$re_num
+www\.france-telecom\.fr\s*: xmt/rcv/%loss = [123]/[123]/\d+%, min/avg/max = $re_num/$re_num/$re_num
+www\.google\.com\s*: xmt/rcv/%loss = [123]/[123]/\d+%, min/avg/max = $re_num/$re_num/$re_num
 });
 }
 

ci/test-15-netdata.pl

@@ -9,19 +9,19 @@ plan tests => 3;
 {
 my $cmd = Test::Command->new(cmd => "fping -c 2 -Q 1 -N 127.0.0.1");
 $cmd->exit_is_num(0);
-$cmd->stdout_like(qr{CHART fping\.127_0_0_1_packets '' 'FPing Packets for host 127\.0\.0\.1' packets '127_0_0_1' fping\.packets line 110020 1
+$cmd->stdout_like(qr{CHART fping\.127_0_0_1_packets '' 'FPing Packets' packets '127.0.0.1' fping\.packets line 110020 1
 DIMENSION xmt sent absolute 1 1
 DIMENSION rcv received absolute 1 1
 BEGIN fping\.127_0_0_1_packets
 SET xmt = 1
 SET rcv = 1
 END
-CHART fping\.127_0_0_1_quality '' 'FPing Quality for host 127\.0\.0\.1' percentage '127_0_0_1' fping\.quality area 110010 1
+CHART fping\.127_0_0_1_quality '' 'FPing Quality' percentage '127.0.0.1' fping\.quality area 110010 1
 DIMENSION returned '' absolute 1 1
 BEGIN fping\.127_0_0_1_quality
 SET returned = 100
 END
-CHART fping\.127_0_0_1_latency '' 'FPing Latency for host 127\.0\.0\.1' ms '127_0_0_1' fping\.latency area 110000 1
+CHART fping\.127_0_0_1_latency '' 'FPing Latency' ms '127.0.0.1' fping\.latency area 110000 1
 DIMENSION min minimum absolute 1 1000000
 DIMENSION max maximum absolute 1 1000000
 DIMENSION avg average absolute 1 1000000

configure.ac

@@ -3,8 +3,25 @@ dnl Process this file with autoconf to produce a configure script.
 dnl Minimum Autoconf version required.
 AC_PREREQ(2.59)
 
-AC_INIT([fping],[5.0-rc1])
-AC_GNU_SOURCE
+AC_INIT([fping],[5.2])
+
+m4_ifdef([AC_AUTOCONF_VERSION],[AC_USE_SYSTEM_EXTENSIONS], [AC_GNU_SOURCE])
+
+# Detect Operatingsystem
+AC_CANONICAL_TARGET
+only_clock_realtime=no
+
+case "${target}" in
+  *darwin*)
+    only_clock_realtime=yes
+    ;;
+  *freebsd*)
+    only_clock_realtime=yes
+    ;;
+  *openbsd*)
+    only_clock_realtime=yes
+    ;;
+esac
 
 dnl --disable-ipv4
 AC_ARG_ENABLE([ipv4],
@@ -43,13 +60,18 @@ dnl Test if --enable-timestamp is explicitely enabled and make an error if this
 AS_IF([test "x$enable_timestamp" = "xyes" -a "x$have_so_timestamp" = "xno"], [
   AC_MSG_ERROR([--enable-timestamp not supported on this platform])
 ])
+AS_IF([test "x$only_clock_realtime" = "xyes"], [AC_DEFINE(ONLY_CLOCK_REALTIME, [1], [ONLY_CLOCK_REALTIME is defined])])
 
 AC_ARG_ENABLE([safe-limits],
   AS_HELP_STRING([--enable-safe-limits], [Restrict timing parameters (-i, -p) within "safe" limits]))
 AS_IF([test "x$enable_safe_limits" = "xyes"], [
    AC_DEFINE(FPING_SAFE_LIMITS, [1], [safe limits should be enforced])])
 
-AC_CANONICAL_TARGET
+AC_ARG_ENABLE([debug],
+  AS_HELP_STRING([--enable-debug], [enable debugging @<:@default=no@:>@]), [enable_debug=$enableval], [enable_debug=no])
+AS_IF([test "x$enable_debug" = "xyes"], [
+  AC_DEFINE([DEBUG], [1], [Define if debugging is enabled])])
+
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 AM_MAINTAINER_MODE
 
@@ -59,7 +81,7 @@ dnl Checks for programs.
 
 AC_PROG_CC
 AM_PROG_CC_C_O
-AC_PROG_CC_STDC
+m4_version_prereq([2.70],,[AC_PROG_CC_STDC])
 AC_PROG_CPP
 AC_PROG_INSTALL
 
@@ -78,6 +100,9 @@ if test $ac_cv_func_sigaction = yes; then
     AC_DEFINE([USE_SIGACTION],[1],[Define if sigaction is available.])
 fi
 
+AC_CHECK_FUNCS([strftime], [],
+  [AC_MSG_ERROR([strftime function is required but not found])])
+
 AH_TOP([
 #ifndef CONFIG_H
 #define CONFIG_H

contrib/Dockerfile

@@ -0,0 +1,16 @@
+FROM ubuntu:20.04
+
+# Base
+RUN apt-get update && apt-get install -y \
+  build-essential \
+  automake \
+  m4
+
+# Add source code
+COPY ./ /app
+
+# Compile
+WORKDIR /app
+RUN autoreconf --install
+RUN ./configure && make && make install
+ENTRYPOINT ["fping"]

contrib/fping.spec

@@ -2,7 +2,7 @@ Summary: send ICMP echo probes to multiple hosts
 Name: fping
 Version: 4.2
 Release: 1
-License: BSD with advertising
+License: Freely redistributable without restriction
 Group: Applications/System
 Source0: http://fping.org/dist/%{name}-%{version}.tar.gz
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-buildroot
@@ -54,7 +54,8 @@ rm -rf $RPM_BUILD_ROOT
 %post
 if [ -x /usr/sbin/setcap ]; then
     /bin/chmod 0755 /usr/sbin/fping*
-    /usr/sbin/setcap cap_net_raw+ep /usr/sbin/fping*
+    /usr/sbin/setcap cap_net_raw,cap_net_admin+ep /usr/sbin/fping
+    /usr/sbin/setcap cap_net_raw,cap_net_admin+ep /usr/sbin/fping6
 fi
 
 %changelog

doc/fping.pod

@@ -66,7 +66,8 @@ default is 1.5.
 Number of request packets to send to each target.  In this mode, a line is
 displayed for each received response (this can suppressed with B<-q> or B<-Q>).
 Also, statistics about responses for each target are displayed when all
-requests have been sent (or when interrupted).
+requests have been sent (or when interrupted).  This option overrides B<-a>
+or B<-u>.
 
 =item B<-C>, B<--vcount>=I<N>
 
@@ -77,11 +78,12 @@ designed for automated response-time statistics gathering. For example:
  somehost : 91.7 37.0 29.2 - 36.8
 
 shows the response time in milliseconds for each of the five requests, with the
-C<-> indicating that no response was received to the fourth request.
+C<-> indicating that no response was received to the fourth request.  This
+option overrides B<-a> or B<-u>.
 
 =item B<-d>, B<--rdns>
 
-Use DNS to lookup address of return ping packet. This allows you to give fping
+Use DNS to lookup address of ping target. This allows you to give fping
 a list of IP addresses as input and print hostnames in the output. This is similar
 to option B<-n>/B<--name>, but will force a reverse-DNS lookup even if you give
 hostnames as target (NAME->IP->NAME).
@@ -91,16 +93,23 @@ hostnames as target (NAME->IP->NAME).
 Add Unix timestamps in front of output lines generated with in looping or counting
 modes (B<-l>, B<-c>, or B<-C>).
 
+Subcommand: B<--timestamp-format>=I<ctime|iso|rfc3339>
+
+Allow to change the timestamp format of the B<-D> option to the following format types.
+
+I<ctime> = "%c" (Example: Mon Jun 10 07:50:00 2024)
+
+I<iso> = "%Y-%m-%dT%T%z" (Example: 2024-06-10T07:50:00+0200)
+
+I<rfc3339> = "%Y-%m-%d %H:%M:%S" (Example: 2024-06-10 07:50:00)
+
 =item B<-e>, B<--elapsed>
 
 Show elapsed (round-trip) time of packets.
 
 =item B<-f>, B<--file>
 
-Read list of targets from a file.  This option can only be used by the root
-user. Regular users should pipe in the file via stdin:
-
- $ fping < targets_file
+Read list of targets from a file.
 
 =item B<-g>, B<--generate> I<addr/mask>
 
@@ -133,6 +142,11 @@ to any target (default is 10, minimum is 1).
 
 Set the interface (requires SO_BINDTODEVICE support).
 
+=item B<-k>, B<--fwmark>=I<FWMARK>
+
+Set FWMARK on ping packets for policy-based routing. Requires Linux kernel
+2.6.25<=, and root privileges or cap_net_admin.
+
 =item B<-l>, B<--loop>
 
 Loop sending packets to each target indefinitely. Can be interrupted with
@@ -150,11 +164,11 @@ Set the "Don't Fragment" bit in the IP header (used to determine/test the MTU).
 =item B<-n>, B<--name>
 
 If targets are specified as IP addresses, do a reverse-DNS lookup on them
-to
+to print hostnames in the output.
 
 =item B<-N>, B<--netdata>
 
-Format output for netdata (-l -Q are required). See: L<http://my-netdata.io/>
+Format output for netdata (-l -Q are required). See: L<https://netdata.cloud/>
 
 =item B<-o>, B<--outage>
 
@@ -176,9 +190,11 @@ an individual target. Default is 1000 and minimum is 10.
 Quiet. Don't show per-probe results, but only the final summary. Also don't
 show ICMP error messages.
 
-=item B<-Q>, B<--squiet>=I<SECS>
+=item B<-Q>, B<--squiet>=I<SECS[,cumulative]>
 
-Like B<-q>, but show summary results every n seconds.
+Like B<-q>, but additionally show interval summary results every I<SECS>
+seconds. With I<cumulative>, show summary results since start instead of
+for the last interval, unless option B<-N> is used, too.
 
 =item B<-r>, B<--retry>=I<N>
 
@@ -231,6 +247,11 @@ Print B<fping> version information.
 Given a list of hosts, this mode checks if number of reachable hosts is >= N
 and exits true in that case.
 
+=item B<-X>, B<--fast-reachable>=I<N>
+
+Given a list of hosts, this mode immediately exits true once N alive hosts
+have been found.
+
 =back
 
 =head1 EXAMPLES
@@ -266,12 +287,17 @@ B<fping website: L<http://www.fping.org>>
 
 =head1 DIAGNOSTICS
 
-Exit status is 0 if all the hosts are reachable, 1 if some hosts
+Exit status is 0 if all the hosts (or the number of hosts specified with B<-x>
+or B<-X>) are reachable, 1 if some (or too many with B<-x> or B<-X>) hosts
 were unreachable, 2 if any IP addresses were not found, 3 for invalid command
 line arguments, and 4 for a system call failure.
 
 =head1 RESTRICTIONS
 
+The number of addresses that can be generated using the C<-g>, C<--generate>
+option is limited to 131070 (the number of host addresses in one 15-bit IPv4
+prefix).
+
 If fping was configured with C<--enable-safe-limits>, the following values are
 not allowed for non-root users:
 

src/.clang-format

@@ -1,2 +1,3 @@
 BasedOnStyle: WebKit
 BreakBeforeBraces: Stroustrup
+PointerAlignment: Right

src/fping.h

@@ -22,7 +22,7 @@ extern int trace_flag;
 void crash_and_burn( char *message );
 void errno_crash_and_burn( char *message );
 int in_cksum( unsigned short *p, int n );
-extern int random_data_flag;
+extern int nonzero_payload_flag;
 
 /* socket.c */
 int  open_ping_socket_ipv4(int *socktype);

src/optparse.c

@@ -238,12 +238,14 @@ optparse_long(struct optparse *options,
     /* Parse as long option. */
     options->errmsg[0] = '\0';
     options->optopt = 0;
+    options->optlongname = 0;
     options->optarg = 0;
     option += 2; /* skip "--" */
     options->optind++;
     for (int i = 0; !longopts_end(longopts, i); i++) {
         const char *name = longopts[i].longname;
         if (longopts_match(name, option)) {
+            options->optlongname = option;
             if (longindex)
                 *longindex = i;
             options->optopt = longopts[i].shortname;

src/optparse.h

@@ -48,6 +48,7 @@ struct optparse {
     int permute;
     int optind;
     int optopt;
+    char *optlongname;
     char *optarg;
     char errmsg[64];
     int subopt;

src/seqmap.c

@@ -41,6 +41,7 @@
 #include "options.h"
 #include "fping.h"
 
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -80,8 +81,8 @@ unsigned int seqmap_add(unsigned int host_nr, unsigned int ping_count, int64_t t
     /* check if expired (note that unused seqmap values will have fields set to
      * 0, so will be seen as expired */
     next_value = &seqmap_map[seqmap_next_id];
-    if (timestamp - next_value->ping_ts < SEQMAP_TIMEOUT_IN_NS) {
-        fprintf(stderr, "fping error: not enough sequence numbers available! (expire_timeout=%ld, host_nr=%d, ping_count=%d, seqmap_next_id=%d)\n",
+    if (next_value->ping_ts != 0 && timestamp - next_value->ping_ts < SEQMAP_TIMEOUT_IN_NS) {
+        fprintf(stderr, "fping error: not enough sequence numbers available! (expire_timeout=%" PRId64 ", host_nr=%d, ping_count=%d, seqmap_next_id=%d)\n",
             SEQMAP_TIMEOUT_IN_NS, host_nr, ping_count, seqmap_next_id);
         exit(4);
     }

src/socket4.c

@@ -133,6 +133,7 @@ int socket_sendto_ping_ipv4(int s, struct sockaddr* saddr, socklen_t saddr_len,
 {
     struct icmp* icp;
     int n;
+    size_t i;
 
     icp = (struct icmp*)ping_buffer_ipv4;
 
@@ -142,9 +143,12 @@ int socket_sendto_ping_ipv4(int s, struct sockaddr* saddr, socklen_t saddr_len,
     icp->icmp_seq = htons(icmp_seq_nr);
     icp->icmp_id = icmp_id_nr;
 
-    if (random_data_flag) {
-        for (n = ((char*)&icp->icmp_data - (char*)icp); n < ping_pkt_size_ipv4; ++n) {
-            ping_buffer_ipv4[n] = random() & 0xFF;
+    if (nonzero_payload_flag) {
+        // for (n = ((char*)&icp->icmp_data - (char*)icp); n < ping_pkt_size_ipv4; ++n) {
+        //     ping_buffer_ipv4[n] = random() & 0xFF;
+        // }
+        for(n = (char*) &icp->icmp_data - (char*)icp, i = 0xA; n < ping_pkt_size_ipv4; ++n, i += 1) {
+            ping_buffer_ipv4[n] = i & 0xFF;
         }
     }
 

src/socket6.c

@@ -51,15 +51,15 @@ int open_ping_socket_ipv6(int *socktype)
     struct protoent* proto;
     int s;
 
-    /* confirm that ICMP is available on this machine */
+    /* confirm that ICMP6 is available on this machine */
     if ((proto = getprotobyname("ipv6-icmp")) == NULL)
-        crash_and_burn("icmp: unknown protocol");
+        crash_and_burn("ipv6-icmp: unknown protocol");
 
-    /* create raw socket for ICMP calls (ping) */
+    /* create raw socket for ICMP6 calls (ping) */
     *socktype = SOCK_RAW;
     s = socket(AF_INET6, *socktype, proto->p_proto);
     if (s < 0) {
-        /* try non-privileged icmp (works on Mac OSX without privileges, for example) */
+        /* try non-privileged icmp6 (works on Mac OSX without privileges, for example) */
         *socktype = SOCK_DGRAM;
         s = socket(AF_INET6, *socktype, proto->p_proto);
         if (s < 0) {
@@ -104,7 +104,7 @@ void socket_set_src_addr_ipv6(int s, struct in6_addr* src_addr, int *ident)
     if (ident) {
         memset(&sa, 0, len);
         if (getsockname(s, (struct sockaddr *)&sa, &len) < 0)
-            errno_crash_and_burn("can't get ICMP socket identity");
+            errno_crash_and_burn("can't get ICMP6 socket identity");
 
         if (sa.sin6_port)
             *ident = sa.sin6_port;
@@ -115,6 +115,7 @@ int socket_sendto_ping_ipv6(int s, struct sockaddr* saddr, socklen_t saddr_len,
 {
     struct icmp6_hdr* icp;
     int n;
+    size_t i;
 
     icp = (struct icmp6_hdr*)ping_buffer_ipv6;
     icp->icmp6_type = ICMP6_ECHO_REQUEST;
@@ -122,9 +123,9 @@ int socket_sendto_ping_ipv6(int s, struct sockaddr* saddr, socklen_t saddr_len,
     icp->icmp6_seq = htons(icmp_seq_nr);
     icp->icmp6_id = icmp_id_nr;
 
-    if (random_data_flag) {
-        for (n = sizeof(struct icmp6_hdr); n < ping_pkt_size_ipv6; ++n) {
-            ping_buffer_ipv6[n] = random() & 0xFF;
+    if (nonzero_payload_flag) {
+        for (n = sizeof(struct icmp6_hdr), i = 0xA; n < ping_pkt_size_ipv6; ++n, i+=1) {
+            ping_buffer_ipv6[n] = i & 0xFF;
         }
     }