Dns discovery (#15)

* Updated vendor source * Added dns discovery method * Use latest Go in check workflow * Use host for nameserver * Use reference instead of move Host
2022-10-25 11:25:23 +02:00 · 2022-10-25 11:25:23 +02:00 · 0333d3256c
parent 9993d2d991
commit 0333d3256c
7 changed files with 605 additions and 3 deletions
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@ -27,6 +27,9 @@ jobs:
          submodules: true
      - name: Checkout submodules
        run: git submodule update --init --recursive
+      - uses: actions/setup-go@v3 # we need go to build go-waku
+        with:
+          go-version: '1.19'
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
--- a/Cargo.lock
+++ b/Cargo.lock
@ -46,6 +46,21 @@ dependencies = [
 "memchr",
 ]

+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.66"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "216261ddc8289130e551ddcd5ce8a064710c0d064a4d2895c67151c92b5443f6"
+
 [[package]]
 name = "arrayref"
 version = "0.3.6"
@ -110,12 +125,30 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "771fe0050b883fcc3ea2359b1a96bcfbc090b7116eae7c3c512c7a083fdf23d3"

+[[package]]
+name = "bumpalo"
+version = "3.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "572f695136211188308f16ad2ca5c851a712c464060ae6974944458eb83880ba"
+
 [[package]]
 name = "byteorder"
 version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"

+[[package]]
+name = "bytes"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
+
+[[package]]
+name = "cassowary"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df8670b8c7b9dae1793364eafadf7239c40d669904660c5960d74cfd80b46a53"
+
 [[package]]
 name = "cc"
 version = "1.0.73"
@ -137,6 +170,21 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"

+[[package]]
+name = "chrono"
+version = "0.4.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfd4d1b31faaa3a89d7934dbded3111da0d2ef28e3ebccdb4f0179f5929d1ef1"
+dependencies = [
+ "iana-time-zone",
+ "js-sys",
+ "num-integer",
+ "num-traits",
+ "time",
+ "wasm-bindgen",
+ "winapi",
+]
+
 [[package]]
 name = "cipher"
 version = "0.4.3"
@ -182,6 +230,16 @@ dependencies = [
 "os_str_bytes",
 ]

+[[package]]
+name = "codespan-reporting"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
+dependencies = [
+ "termcolor",
+ "unicode-width",
+]
+
 [[package]]
 name = "const_format"
 version = "0.2.26"
@ -202,6 +260,12 @@ dependencies = [
 "unicode-xid",
 ]

+[[package]]
+name = "core-foundation-sys"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
+
 [[package]]
 name = "core2"
 version = "0.4.0"
@ -220,6 +284,31 @@ dependencies = [
 "libc",
 ]

+[[package]]
+name = "crossterm"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e64e6c0fbe2c17357405f7c758c1ef960fce08bdfb2c03d88d2a18d7e09c4b67"
+dependencies = [
+ "bitflags",
+ "crossterm_winapi",
+ "libc",
+ "mio",
+ "parking_lot",
+ "signal-hook",
+ "signal-hook-mio",
+ "winapi",
+]
+
+[[package]]
+name = "crossterm_winapi"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ae1b35a484aa10e07fe0638d02301c5ad24de82d310ccbd2f3693da5f09bf1c"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@ -240,6 +329,50 @@ dependencies = [
 "cipher",
 ]

+[[package]]
+name = "cxx"
+version = "1.0.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b7d4e43b25d3c994662706a1d4fcfc32aaa6afd287502c111b237093bb23f3a"
+dependencies = [
+ "cc",
+ "cxxbridge-flags",
+ "cxxbridge-macro",
+ "link-cplusplus",
+]
+
+[[package]]
+name = "cxx-build"
+version = "1.0.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84f8829ddc213e2c1368e51a2564c552b65a8cb6a28f31e576270ac81d5e5827"
+dependencies = [
+ "cc",
+ "codespan-reporting",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "scratch",
+ "syn",
+]
+
+[[package]]
+name = "cxxbridge-flags"
+version = "1.0.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e72537424b474af1460806647c41d4b6d35d09ef7fe031c5c2fa5766047cc56a"
+
+[[package]]
+name = "cxxbridge-macro"
+version = "1.0.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "309e4fb93eed90e1e14bea0da16b209f81813ba9fc7830c20ed151dd7bc0a4d7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "data-encoding"
 version = "2.3.2"
@ -292,7 +425,7 @@ checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
 dependencies = [
 "cfg-if",
 "libc",
- "wasi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
 ]

 [[package]]
@ -338,6 +471,30 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"

+[[package]]
+name = "iana-time-zone"
+version = "0.1.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f5a6ef98976b22b3b7f2f3a806f858cb862044cfa66805aa3ad84cb3d3b785ed"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "wasm-bindgen",
+ "winapi",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0703ae284fc167426161c2e3f1da3ea71d94b21bedbcc9494e92b28e334e3dca"
+dependencies = [
+ "cxx",
+ "cxx-build",
+]
+
 [[package]]
 name = "idna"
 version = "0.3.0"
@ -367,12 +524,30 @@ dependencies = [
 "generic-array",
 ]

+[[package]]
+name = "itertools"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"

+[[package]]
+name = "js-sys"
+version = "0.3.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49409df3e3bf0856b916e2ceaca09ee28e6871cf7d9ce97a692cacfdb2a25a47"
+dependencies = [
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@ -401,6 +576,25 @@ dependencies = [
 "winapi",
 ]

+[[package]]
+name = "link-cplusplus"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9272ab7b96c9046fbc5bc56c06c117cb639fe2d509df0c421cad82d2915cf369"
+dependencies = [
+ "cc",
+]
+
+[[package]]
+name = "lock_api"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
+dependencies = [
+ "autocfg",
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.17"
@ -422,6 +616,18 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"

+[[package]]
+name = "mio"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57ee1c23c7c63b0c9250c339ffdc69255f110b298b901b9f6c82547b7b87caaf"
+dependencies = [
+ "libc",
+ "log",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+ "windows-sys 0.36.1",
+]
+
 [[package]]
 name = "multiaddr"
 version = "0.14.0"
@ -475,6 +681,25 @@ dependencies = [
 "minimal-lexical",
 ]

+[[package]]
+name = "num-integer"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.15.0"
@ -493,6 +718,29 @@ version = "6.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"

+[[package]]
+name = "parking_lot"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
+dependencies = [
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4dc9e0dc2adc1c69d09143aff38d3d30c5c3f0df0dad82e6d25547af174ebec0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-sys 0.42.0",
+]
+
 [[package]]
 name = "peeking_take_while"
 version = "0.1.2"
@ -567,6 +815,29 @@ dependencies = [
 "unicode-ident",
 ]

+[[package]]
+name = "prost"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "399c3c31cdec40583bb68f0b18403400d01ec4289c383aa047560439952c4dd7"
+dependencies = [
+ "bytes",
+ "prost-derive",
+]
+
+[[package]]
+name = "prost-derive"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7345d5f0e08c0536d7ac7229952590239e77abf0a0100a1b1d890add6ea96364"
+dependencies = [
+ "anyhow",
+ "itertools",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.21"
@ -606,6 +877,15 @@ dependencies = [
 "getrandom",
 ]

+[[package]]
+name = "redox_syscall"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.6.0"
@ -635,6 +915,18 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"

+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
+[[package]]
+name = "scratch"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8132065adcfd6e02db789d9285a0deb2f3fcb04002865ab67d5fb103533898"
+
 [[package]]
 name = "secp256k1"
 version = "0.24.0"
@ -692,6 +984,42 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"

+[[package]]
+name = "signal-hook"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a253b5e89e2698464fc26b545c9edceb338e18a89effeeecfea192c3025be29d"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
+[[package]]
+name = "signal-hook-mio"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29ad2e15f37ec9a6cc544097b78a1ec90001e9f71b81338ca39f430adaca99af"
+dependencies = [
+ "libc",
+ "mio",
+ "signal-hook",
+]
+
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e51e73328dc4ac0c7ccbda3a494dfa03df1de2f46018127f60c693f2648455b0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "smallvec"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
+
 [[package]]
 name = "sscanf"
 version = "0.3.1"
@ -792,6 +1120,17 @@ dependencies = [
 "syn",
 ]

+[[package]]
+name = "time"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
+dependencies = [
+ "libc",
+ "wasi 0.10.0+wasi-snapshot-preview1",
+ "winapi",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@ -816,6 +1155,32 @@ dependencies = [
 "serde",
 ]

+[[package]]
+name = "toy-chat"
+version = "0.1.0"
+dependencies = [
+ "chrono",
+ "crossterm",
+ "once_cell",
+ "prost",
+ "tui",
+ "unicode-width",
+ "waku",
+]
+
+[[package]]
+name = "tui"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccdd26cbd674007e649a272da4475fb666d3aa0ad0531da7136db6fab0e5bad1"
+dependencies = [
+ "bitflags",
+ "cassowary",
+ "crossterm",
+ "unicode-segmentation",
+ "unicode-width",
+]
+
 [[package]]
 name = "typenum"
 version = "1.15.0"
@ -843,6 +1208,18 @@ dependencies = [
 "tinyvec",
 ]

+[[package]]
+name = "unicode-segmentation"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fdbf052a0783de01e944a6ce7a8cb939e295b1e7be835a1112c3b9a7f047a5a"
+
+[[package]]
+name = "unicode-width"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.4"
@ -896,6 +1273,7 @@ dependencies = [
 "serde",
 "serde_json",
 "sscanf",
+ "url",
 "waku-sys",
 ]

@ -906,12 +1284,72 @@ dependencies = [
 "bindgen",
 ]

+[[package]]
+name = "wasi"
+version = "0.10.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

+[[package]]
+name = "wasm-bindgen"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c8ffb332579b0557b52d268b91feab8df3615f265d5270fec2a8c95b17c1142"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"
+
 [[package]]
 name = "which"
 version = "4.3.0"
@ -953,3 +1391,103 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
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+ "windows_i686_gnu 0.36.1",
+ "windows_i686_msvc 0.36.1",
+ "windows_x86_64_gnu 0.36.1",
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+ "windows_aarch64_msvc 0.42.0",
+ "windows_i686_gnu 0.42.0",
+ "windows_i686_msvc 0.42.0",
+ "windows_x86_64_gnu 0.42.0",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc 0.42.0",
+]
+
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+
+[[package]]
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+
+[[package]]
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--- a/Cargo.toml
+++ b/Cargo.toml
@ -2,5 +2,6 @@

 members = [
    "waku",
-    "waku-sys"
+    "waku-sys",
+    "examples/toy-chat"
 ]
--- a/waku-sys/vendor
+++ b/waku-sys/vendor
@ -1 +1 @@
-Subproject commit 3a7f2608b3613e40c055e8f9a6afb9337c28c580
+Subproject commit 77e23638de8e2c307f9fd22786d665ae25487880
--- a/waku/Cargo.toml
+++ b/waku/Cargo.toml
@ -18,4 +18,5 @@ rand = "0.8"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 sscanf = "0.3"
+url = "2.3"
 waku-sys = { path = "../waku-sys" }
--- a/waku/src/node/discovery.rs
+++ b/waku/src/node/discovery.rs
@ -0,0 +1,47 @@
+// std
+use std::ffi::{CStr, CString};
+use std::time::Duration;
+// crates
+use multiaddr::Multiaddr;
+use url::{Host, Url};
+// internal
+use crate::general::JsonResponse;
+use crate::Result;
+
+/// RetrieveNodes returns a list of multiaddress given a url to a DNS discoverable ENR tree.
+/// The nameserver can optionally be specified to resolve the enrtree url. Otherwise uses the default system dns.
+pub fn waku_dns_discovery(
+    url: &Url,
+    server: Option<&Host>,
+    timeout: Option<Duration>,
+) -> Result<Vec<Multiaddr>> {
+    let result = unsafe {
+        CStr::from_ptr(waku_sys::waku_dns_discovery(
+            CString::new(url.to_string())
+                .expect("CString should build properly from a valid Url")
+                .into_raw(),
+            CString::new(
+                server
+                    .map(|host| host.to_string())
+                    .unwrap_or_else(|| "".to_string()),
+            )
+            .expect("CString should build properly from a String nameserver")
+            .into_raw(),
+            timeout
+                .map(|timeout| {
+                    timeout
+                        .as_millis()
+                        .try_into()
+                        .expect("Duration as milliseconds should fit in a i32")
+                })
+                .unwrap_or(0),
+        ))
+    }
+    .to_str()
+    .expect("Response should always succeed to load to a &str");
+
+    let response: JsonResponse<Vec<Multiaddr>> =
+        serde_json::from_str(result).expect("JsonResponse should always succeed to deserialize");
+
+    response.into()
+}
--- a/waku/src/node/mod.rs
+++ b/waku/src/node/mod.rs
@ -1,6 +1,7 @@
 //! Waku node implementation

 mod config;
+mod discovery;
 mod filter;
 mod lightpush;
 mod management;
@ -16,7 +17,9 @@ use std::marker::PhantomData;
 use std::sync::Mutex;
 use std::time::Duration;
 // crates
+use url::{Host, Url};
 // internal
+
 use crate::general::{
    FilterSubscription, MessageId, PeerId, ProtocolId, Result, StoreQuery, StoreResponse,
    WakuMessage, WakuPubSubTopic,
@ -317,6 +320,15 @@ impl WakuNodeHandle<Running> {
    ) -> Result<()> {
        filter::waku_filter_unsubscribe(filter_subscription, timeout)
    }
+
+    pub fn dns_discovery(
+        &self,
+        url: &Url,
+        nameserver: Option<&Host>,
+        timeout: Option<Duration>,
+    ) -> Result<Vec<Multiaddr>> {
+        discovery::waku_dns_discovery(url, nameserver, timeout)
+    }
 }

 /// Spawn a new Waku node with the givent configuration (default configuration if `None` provided)