diff --git a/native/cpp/CommonCpp/grpc/blob_client/rust/build.rs b/native/cpp/CommonCpp/grpc/blob_client/rust/build.rs
--- a/native/cpp/CommonCpp/grpc/blob_client/rust/build.rs
+++ b/native/cpp/CommonCpp/grpc/blob_client/rust/build.rs
@@ -1,4 +1,6 @@
 fn main() {
   tonic_build::compile_protos("../../protos/blob.proto")
     .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
+  let _cxx_build =
+    cxx_build::bridge("src/lib.rs").flag_if_supported("-std=c++14");
 }
diff --git a/native/cpp/CommonCpp/grpc/blob_client/rust/src/lib.rs b/native/cpp/CommonCpp/grpc/blob_client/rust/src/lib.rs
--- a/native/cpp/CommonCpp/grpc/blob_client/rust/src/lib.rs
+++ b/native/cpp/CommonCpp/grpc/blob_client/rust/src/lib.rs
@@ -28,6 +28,29 @@
     stream_end: bool,
     data: Vec<u8>,
   }
+
+  extern "Rust" {
+    type UploadState;
+    type DownloadState;
+
+    fn initialize_upload_state_blocking() -> Result<Box<UploadState>>;
+    fn start_upload_blocking(
+      state: &mut Box<UploadState>,
+      holder: String,
+      hash: String,
+    ) -> Result<()>;
+    fn upload_chunk_blocking(
+      state: &mut Box<UploadState>,
+      chunk: &[u8],
+    ) -> Result<()>;
+    fn complete_upload_blocking(client: Box<UploadState>) -> Result<bool>;
+    fn initialize_download_state_blocking(
+      holder: String,
+    ) -> Result<Box<DownloadState>>;
+    fn pull_chunk_blocking(
+      client: &mut Box<DownloadState>,
+    ) -> Result<BlobChunkResponse>;
+  }
 }
 
 pub struct UploadState {
@@ -162,3 +185,40 @@
     data: vec![],
   })
 }
+
+pub fn initialize_upload_state_blocking() -> Result<Box<UploadState>, String> {
+  RUNTIME.block_on(initialize_upload_state())
+}
+
+pub fn start_upload_blocking(
+  state: &mut Box<UploadState>,
+  holder: String,
+  hash: String,
+) -> Result<(), String> {
+  RUNTIME.block_on(start_upload(state, holder, hash))
+}
+
+pub fn upload_chunk_blocking(
+  state: &mut Box<UploadState>,
+  chunk: &[u8],
+) -> Result<(), String> {
+  RUNTIME.block_on(upload_chunk(state, chunk))
+}
+
+pub fn complete_upload_blocking(
+  client: Box<UploadState>,
+) -> Result<bool, String> {
+  RUNTIME.block_on(complete_upload(client))
+}
+
+pub fn initialize_download_state_blocking(
+  holder: String,
+) -> Result<Box<DownloadState>, String> {
+  RUNTIME.block_on(initialize_download_state(holder))
+}
+
+pub fn pull_chunk_blocking(
+  client: &mut Box<DownloadState>,
+) -> Result<ffi::BlobChunkResponse, String> {
+  RUNTIME.block_on(pull_chunk(client))
+}