Vendored protoc binary (#6)

- Add protoc-bin-vendored crate
- Use vendored protoc binary to generate protobufs

Cargo.toml

@@ -28,6 +28,7 @@ log = "0.4"
 lru_time_cache = "0.11"
 machine-uid = "0.5"
 protobuf = { version = "3.2", features = ["with-bytes"] }
+protoc-bin-vendored = "3.0"
 rand = "0.8"
 reqwest = { version = "0.12", default-features = false, features = ["brotli", "cookies", "gzip", "json", "macos-system-configuration", "native-tls", "stream"] }
 semver = "1.0"
@@ -44,4 +45,4 @@ url = "2.3"
 uuid = { version = "1.2", features = ["fast-rng", "serde", "v4", "v5"] }
 
 [build-dependencies]
-protobuf-codegen = "3"
+protobuf-codegen = "3"

build.rs

@@ -3,8 +3,9 @@ use std::path::Path;
 fn main() {
     let proto_dir = Path::new("src/protocol/connect/protos");
 
-    // Use `protoc` if available or fall back to a pure Rust parser.
     protobuf_codegen::Codegen::new()
+        .protoc()
+        .protoc_path(&protoc_bin_vendored::protoc_bin_path().expect("could not find protoc binary"))
         .cargo_out_dir("protos")
         .include(proto_dir)
         .input(proto_dir.join("queue.proto"))