diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 00000000..0c1c209f
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[target.armv7-unknown-linux-gnueabihf]
+linker = "arm-linux-gnueabihf-gcc"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b460f3e3..85b798f1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,10 +40,11 @@ jobs:
   build:
     strategy:
       matrix:
-        target: [ x86_64-unknown-linux-gnu, x86_64-apple-darwin, x86_64-pc-windows-msvc ]
         include:
           - target: x86_64-unknown-linux-gnu
             os: ubuntu-latest
+          - target: armv7-unknown-linux-gnueabihf
+            os: ubuntu-latest
           - target: x86_64-apple-darwin
             os: macos-latest
           - target: x86_64-pc-windows-msvc
@@ -56,6 +57,12 @@ jobs:
 
       - uses: Swatinem/rust-cache@v1.2.0
 
+      - name: Install compiler for armhf arch
+        if: matrix.target == 'armv7-unknown-linux-gnueabihf'
+        run: |
+          sudo apt-get update
+          sudo apt-get install gcc-arm-linux-gnueabihf
+
       - name: Build binary
         run: |
           cargo build -p swap --target ${{ matrix.target }}
@@ -77,7 +84,6 @@ jobs:
       RUST_TEST_TASKS: 2
     strategy:
       matrix:
-        target: [ x86_64-unknown-linux-gnu, x86_64-apple-darwin ]
         include:
           - target: x86_64-unknown-linux-gnu
             os: ubuntu-latest
diff --git a/.github/workflows/release-cli.yml b/.github/workflows/release-cli.yml
index ccccae45..5d349586 100644
--- a/.github/workflows/release-cli.yml
+++ b/.github/workflows/release-cli.yml
@@ -1,4 +1,4 @@
-name: "Release swap"
+name: "Release swap and asb"
 
 on:
   release:
@@ -10,13 +10,32 @@ jobs:
     strategy:
       matrix:
         include:
-          - target: x86_64-unknown-linux-gnu
+          - bin: swap
+            target: x86_64-unknown-linux-gnu
             os: ubuntu-latest
             archive_ext: tar
-          - target: x86_64-apple-darwin
+          - bin: swap
+            target: x86_64-apple-darwin
             os: macos-latest
             archive_ext: tar
-          - target: x86_64-pc-windows-msvc
+          - bin: swap
+            target: x86_64-pc-windows-msvc
+            os: windows-latest
+            archive_ext: zip
+          - bin: asb
+            target: x86_64-unknown-linux-gnu
+            os: ubuntu-latest
+            archive_ext: tar
+          - bin: asb
+            target: armv7-unknown-linux-gnueabihf
+            os: ubuntu-latest
+            archive_ext: tar
+          - bin: asb
+            target: x86_64-apple-darwin
+            os: macos-latest
+            archive_ext: tar
+          - bin: asb
+            target: x86_64-pc-windows-msvc
             os: windows-latest
             archive_ext: zip
     runs-on: ${{ matrix.os }}
@@ -29,11 +48,19 @@ jobs:
 
       - uses: Swatinem/rust-cache@v1.2.0
 
-      - name: Build ${{ matrix.target }} release binary
-        run: cargo build --target=${{ matrix.target }} --release --package swap --bin swap
+      - name: Install compiler for armhf arch
+        if: matrix.target == 'armv7-unknown-linux-gnueabihf'
+        run: |
+          sudo apt-get update
+          sudo apt-get install gcc-arm-linux-gnueabihf
+
+      - name: Build ${{ matrix.target }} ${{ matrix.bin }} release binary
+
+        run: cargo build --target=${{ matrix.target }} --release --package swap --bin ${{ matrix.bin }}
 
       - name: Smoke test the binary
-        run: target/${{ matrix.target }}/release/swap --help
+        if: matrix.target != 'armv7-unknown-linux-gnueabihf' # armv7-unknown-linux-gnueabihf is only cross-compiled, no smoke test
+        run: target/${{ matrix.target }}/release/${{ matrix.bin }} --help
 
       # Remove once python 3 is the default
       - uses: actions/setup-python@v1
@@ -51,26 +78,26 @@ jobs:
           triple = "${{ matrix.target }}".split("-")
           arch = triple[0]
 
-          archive_name=f'swap_${{ github.event.release.tag_name }}_{os_info.system}_{arch}.${{ matrix.archive_ext }}'
+          archive_name=f'${{ matrix.bin }}_${{ github.event.release.tag_name }}_{os_info.system}_{arch}.${{ matrix.archive_ext }}'
 
           print(f'::set-output name=archive::{archive_name}')
 
       - name: Pack macos archive
         if: matrix.os == 'macos-latest'
         shell: bash
-        run: gtar -C ./target/${{ matrix.target }}/release --create --file=${{ steps.create-archive-name.outputs.archive }} swap
+        run: gtar -C ./target/${{ matrix.target }}/release --create --file=${{ steps.create-archive-name.outputs.archive }} ${{ matrix.bin }}
 
       - name: Pack linux archive
         if: matrix.os == 'ubuntu-latest'
         shell: bash
-        run: tar -C ./target/${{ matrix.target }}/release --create --file=${{ steps.create-archive-name.outputs.archive }} swap
+        run: tar -C ./target/${{ matrix.target }}/release --create --file=${{ steps.create-archive-name.outputs.archive }} ${{ matrix.bin }}
 
       - name: Pack windows archive
         if: matrix.os == 'windows-latest'
         shell: bash
         run: |
-          cp target/${{ matrix.target }}/release/swap.exe ./swap.exe
-          7z a -tzip ${{ steps.create-archive-name.outputs.archive }} ./swap.exe
+          cp target/${{ matrix.target }}/release/${{ matrix.bin }}.exe ./${{ matrix.bin }}.exe
+          7z a -tzip ${{ steps.create-archive-name.outputs.archive }} ./${{ matrix.bin }}.exe
 
       - name: Upload archive
         uses: actions/upload-release-asset@v1
diff --git a/Cargo.lock b/Cargo.lock
index b80a4c92..b363a990 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -682,22 +682,6 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
-[[package]]
-name = "core-foundation"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a89e2ae426ea83155dccf10c0fa6b1463ef6d5fcb44cee0b224a408fa640a62"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
-[[package]]
-name = "core-foundation-sys"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
-
 [[package]]
 name = "cpuid-bool"
 version = "0.1.2"
@@ -1102,21 +1086,6 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
-[[package]]
-name = "foreign-types"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
-dependencies = [
- "foreign-types-shared",
-]
-
-[[package]]
-name = "foreign-types-shared"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
-
 [[package]]
 name = "form_urlencoded"
 version = "1.0.0"
@@ -2131,24 +2100,6 @@ dependencies = [
  "unsigned-varint 0.6.0",
 ]
 
-[[package]]
-name = "native-tls"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8d96b2e1c8da3957d58100b09f102c6d9cfdfced01b7ec5a8974044bb09dbd4"
-dependencies = [
- "lazy_static",
- "libc",
- "log",
- "openssl",
- "openssl-probe",
- "openssl-sys",
- "schannel",
- "security-framework",
- "security-framework-sys",
- "tempfile",
-]
-
 [[package]]
 name = "nb-connect"
 version = "1.0.2"
@@ -2291,39 +2242,6 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
 
-[[package]]
-name = "openssl"
-version = "0.10.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "038d43985d1ddca7a9900630d8cd031b56e4794eecc2e9ea39dd17aa04399a70"
-dependencies = [
- "bitflags",
- "cfg-if 1.0.0",
- "foreign-types",
- "lazy_static",
- "libc",
- "openssl-sys",
-]
-
-[[package]]
-name = "openssl-probe"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
-
-[[package]]
-name = "openssl-sys"
-version = "0.9.60"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "921fc71883267538946025deffb622905ecad223c28efbfdef9bb59a0175f3e6"
-dependencies = [
- "autocfg 1.0.1",
- "cc",
- "libc",
- "pkg-config",
- "vcpkg",
-]
-
 [[package]]
 name = "parity-multiaddr"
 version = "0.11.0"
@@ -3091,16 +3009,6 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
 
-[[package]]
-name = "schannel"
-version = "0.1.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f05ba609c234e60bee0d547fe94a4c7e9da733d1c962cf6e59efa4cd9c8bc75"
-dependencies = [
- "lazy_static",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -3159,29 +3067,6 @@ dependencies = [
  "subtle 2.4.0",
 ]
 
-[[package]]
-name = "security-framework"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1759c2e3c8580017a484a7ac56d3abc5a6c1feadf88db2f3633f12ae4268c69"
-dependencies = [
- "bitflags",
- "core-foundation",
- "core-foundation-sys",
- "libc",
- "security-framework-sys",
-]
-
-[[package]]
-name = "security-framework-sys"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f99b9d5e26d2a71633cc4f2ebae7cc9f874044e0c351a27e17892d76dce5678b"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -3863,16 +3748,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "tokio-native-tls"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7d995660bd2b7f8c1568414c1126076c13fbb725c40112dc0120b78eb9b717b"
-dependencies = [
- "native-tls",
- "tokio",
-]
-
 [[package]]
 name = "tokio-rustls"
 version = "0.22.0"
@@ -3911,17 +3786,19 @@ dependencies = [
 
 [[package]]
 name = "tokio-tungstenite"
-version = "0.13.0"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1a5f475f1b9d077ea1017ecbc60890fda8e54942d680ca0b1d2b47cfa2d861b"
+checksum = "1e96bb520beab540ab664bd5a9cfeaa1fcd846fa68c830b42e2c8963071251d2"
 dependencies = [
  "futures-util",
  "log",
- "native-tls",
  "pin-project 1.0.4",
+ "rustls 0.19.0",
  "tokio",
- "tokio-native-tls",
+ "tokio-rustls",
  "tungstenite",
+ "webpki",
+ "webpki-roots 0.21.0",
 ]
 
 [[package]]
@@ -4033,9 +3910,9 @@ checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
 [[package]]
 name = "tungstenite"
-version = "0.12.0"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ada8297e8d70872fa9a551d93250a9f407beb9f37ef86494eb20012a2ff7c24"
+checksum = "5fe8dada8c1a3aeca77d6b51a4f1314e0f4b8e438b7b1b71e3ddaca8080e4093"
 dependencies = [
  "base64 0.13.0",
  "byteorder",
@@ -4044,11 +3921,14 @@ dependencies = [
  "httparse",
  "input_buffer",
  "log",
- "native-tls",
  "rand 0.8.2",
+ "rustls 0.19.0",
  "sha-1",
+ "thiserror",
  "url",
  "utf-8",
+ "webpki",
+ "webpki-roots 0.21.0",
 ]
 
 [[package]]
@@ -4180,12 +4060,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "vcpkg"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b00bca6106a5e23f3eee943593759b7fcddb00554332e856d990c893966879fb"
-
 [[package]]
 name = "vec-arena"
 version = "1.0.0"
diff --git a/bors.toml b/bors.toml
index 11761796..ea398644 100644
--- a/bors.toml
+++ b/bors.toml
@@ -1,10 +1,11 @@
 status = [
     "static_analysis",
-    "build (x86_64-unknown-linux-gnu)",
-    "build (x86_64-apple-darwin)",
-    "build (x86_64-pc-windows-msvc)",
-    "test (x86_64-unknown-linux-gnu)",
-    "test (x86_64-apple-darwin)",
+    "build (x86_64-unknown-linux-gnu, ubuntu-latest)",
+    "build (armv7-unknown-linux-gnueabihf, ubuntu-latest)",
+    "build (x86_64-apple-darwin, macos-latest)",
+    "build (x86_64-pc-windows-msvc, windows-latest)",
+    "test (x86_64-unknown-linux-gnu, ubuntu-latest)",
+    "test (x86_64-apple-darwin, macos-latest)",
     "docker_tests (happy_path)",
     "docker_tests (happy_path_restart_bob_before_comm)",
     "docker_tests (bob_refunds_using_cancel_and_refund_command)",
diff --git a/rust-toolchain b/rust-toolchain
index b431082c..6a154529 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,4 @@
 [toolchain]
 channel = "nightly-2021-01-31"
 components = ["rustfmt", "clippy"]
+targets = ["armv7-unknown-linux-gnueabihf"]
diff --git a/swap/Cargo.toml b/swap/Cargo.toml
index 2b3d8f3b..4795c765 100644
--- a/swap/Cargo.toml
+++ b/swap/Cargo.toml
@@ -48,7 +48,7 @@ strum = { version = "0.20", features = ["derive"] }
 thiserror = "1"
 time = "0.2"
 tokio = { version = "1.0", features = ["rt-multi-thread", "time", "macros", "sync", "process", "fs"] }
-tokio-tungstenite = { version = "0.13", features = [ "tls" ] }
+tokio-tungstenite = { version = "0.14", features = [ "rustls-tls" ] }
 tokio-util = { version = "0.6.3", features = ["io"] }
 toml = "0.5"
 tracing = { version = "0.1", features = ["attributes"] }