wolfssl/.github/workflows/socat.yml

name: socat Tests

# START OF COMMON SECTION
on:
  push:
    branches: [ 'release/**' ]
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
    branches: [ '*' ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
# END OF COMMON SECTION

jobs:
  build_wolfssl:
    name: Build wolfSSL
    if: ${{ (github.repository_owner == 'wolfssl') && (github.event_name != 'pull_request' || github.event.pull_request.draft == false) }}
    runs-on: ubuntu-24.04
    timeout-minutes: 4
    steps:
      - name: Build wolfSSL
        uses: wolfSSL/actions-build-autotools-project@v1
        with:
          path: wolfssl
          configure: --enable-all --enable-oldtls --enable-tlsv10 --enable-ipv6 'CPPFLAGS=-DWOLFSSL_NO_DTLS_SIZE_CHECK -DOPENSSL_COMPATIBLE_DEFAULTS'
          install: true

      - name: tar build-dir
        run: tar -zcf build-dir.tgz build-dir

      - name: Upload built lib
        uses: actions/upload-artifact@v6
        with:
          name: wolf-install-socat
          path: build-dir.tgz
          retention-days: 5


  socat_check:
    name: socat ${{ matrix.socat_version }}
    if: ${{ (github.repository_owner == 'wolfssl') && (github.event_name != 'pull_request' || github.event.pull_request.draft == false) }}
    runs-on: ubuntu-24.04
    # This should be a safe limit for the parallel tests to run.
    timeout-minutes: 15
    needs: build_wolfssl
    strategy:
      fail-fast: false
      matrix:
        include:
          - socat_version: "1.8.0.0"
            expect_fail: "36,64,146,155,156,216,307,309,310,321,386,399,402,403,459,460,467,468,475,478,491,492,528,529"
          - socat_version: "1.8.0.3"
            expect_fail: "146,155,156,307,321,386,399,402,459,460,467,468,475,478,491,492,495,528,529"
    steps:
      - name: Checkout wolfSSL CI actions
        uses: actions/checkout@v5
        with:
          sparse-checkout: |
            .github/actions
            .github/scripts
          fetch-depth: 1

      - name: Install prereqs
        uses: ./.github/actions/install-apt-deps
        with:
          packages: build-essential autoconf libtool pkg-config clang libc++-dev bubblewrap
          ghcr-debs-tag: ubuntu-24.04-full

      - name: Download lib
        uses: actions/download-artifact@v7
        with:
          name: wolf-install-socat

      - name: untar build-dir
        run: tar -xf build-dir.tgz

      - name: Download socat
        run: curl -O http://www.dest-unreach.org/socat/download/socat-${{ matrix.socat_version }}.tar.gz && tar xvf socat-${{ matrix.socat_version }}.tar.gz

      - name: Checkout OSP
        uses: actions/checkout@v5
        with:
          repository: wolfssl/osp
          path: osp
          fetch-depth: 1

      - name: Build socat
        working-directory: ./socat-${{ matrix.socat_version }}
        run: |
          patch -p1 < ../osp/socat/${{ matrix.socat_version }}/socat-${{ matrix.socat_version }}.patch
          autoreconf -vfi
          ./configure --with-wolfssl=$GITHUB_WORKSPACE/build-dir --enable-default-ipv=4
          make -j

      # Ubuntu 24.04 can restrict unprivileged user namespaces via AppArmor,
      # which leaves CAP_NET_ADMIN ineffective inside bwrap's netns; the shards
      # need it to re-create IPv6 loopback there. Relax the restriction.
      - name: Allow unprivileged user namespaces (for bwrap)
        run: sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0 || true

      - name: Run socat tests
        env:
          SOCAT_SRC: ${{ github.workspace }}/socat-${{ matrix.socat_version }}
          EXPECT_FAIL: ${{ matrix.expect_fail }}
        run: |
          export LD_LIBRARY_PATH=$GITHUB_WORKSPACE/build-dir/lib:$LD_LIBRARY_PATH
          # The socat suite is sleep-bound, so run it as parallel shards via the
          # shared parallel runner. The work is almost all waiting (timeouts and
          # sleeps; only ~16% CPU even when packed), so oversubscribe: ~6 shards
          # per CPU below, run 2 per CPU at once (--threads), so several overlap
          # their waits (bigger runners get proportionally more). Each shard runs
          # a round-robin slice of the tests ($SHARD/$SHARDS) in its own bwrap
          # network namespace (no port collisions) and its own build-dir copy.
          # ${tests:-0} keeps a shard that drew no test numbers a no-op (test 0
          # matches nothing) instead of letting test.sh fall back to running the
          # whole suite.
          #
          # bwrap --unshare-net gives each shard a fresh netns with loopback up
          # but IPv4-only; re-create IPv6 loopback (CAP_NET_ADMIN is granted by
          # the runner) so the suite's ::1 / dual-stack tests work as in the host
          # namespace. fc00::1 and 192.0.2.1 are non-loopback placeholders so
          # glibc's AI_ADDRCONFIG still returns IPv6/IPv4: with only loopback
          # configured it drops the family, and socat's getaddrinfo then fails on
          # numeric non-loopback addresses (e.g. the multicast tests). Best-effort
          # (|| true), errors left visible so a runner without IPv6 still runs the
          # IPv4 tests and any failure stays diagnosable in the log.
          cat > socat-configs.json <<'EOF'
          [{
            "name": "socat", "build": false, "netns": true, "shards": __SHARDS__,
            "run": [["bash", "-c", "set -e; ip link set lo up || true; sysctl -wq net.ipv6.conf.lo.disable_ipv6=0 || true; ip addr add ::1/128 dev lo || true; ip addr add fc00::1/128 dev lo || true; ip addr add 192.0.2.1/32 dev lo || true; sysctl -wq net.ipv6.bindv6only=0 || true; cp -a \"$SOCAT_SRC/.\" .; tests=$(seq \"$SHARD\" \"$SHARDS\" 999); SOCAT=\"$PWD/socat\" SHELL=/bin/bash ./test.sh -t 1.0 --expect-fail \"$EXPECT_FAIL\" ${tests:-0}"]]
          }]
          EOF
          sed -i "s/__SHARDS__/$(( 6 * $(nproc) ))/" socat-configs.json
          # Run 2 shards per CPU at once: the per-shard netns isolates ports, so
          # the only real cost of overlap is CPU, and the suite barely uses any
          # (mostly waiting), so this just overlaps the waits. fail-fast (the
          # default) aborts the rest on the first failure.
          .github/scripts/parallel-make-check.py \
            --threads "$(( 2 * $(nproc) ))" socat-configs.json