diff --git a/tests/test_curl_issue.py b/tests/test_curl_issue.py
new file mode 100644
index 0000000..2bfb6b8
--- /dev/null
+++ b/tests/test_curl_issue.py
@@ -0,0 +1,137 @@
+"""
+Test for reproducing the curl upload issue described in the problem statement.
+"""
+import anyio
+import httpx
+import pytest
+import tempfile
+import os
+
+from tests.helpers import generate_test_file
+
+
+@pytest.mark.anyio
+async def test_curl_upload_missing_content_length(test_client: httpx.AsyncClient):
+    """Tests HTTP upload when Content-Length header is missing (simulating curl issue)."""
+    uid = "curl-no-content-length"
+    file_content, file_metadata = generate_test_file(size_in_kb=64)
+    
+    # Simulate curl upload without Content-Length header (one potential issue)
+    headers = {
+        'Content-Type': file_metadata.type,
+        # Missing Content-Length - some curl configurations might not set this
+    }
+    
+    response = await test_client.put(
+        f"/{uid}/{file_metadata.name}", 
+        content=file_content, 
+        headers=headers
+    )
+    
+    # This should fail with 400 due to missing/invalid metadata
+    assert response.status_code == 400
+    assert "Invalid file metadata" in response.text or "Cannot decode file metadata" in response.text
+
+
+@pytest.mark.anyio
+async def test_curl_upload_missing_content_type(test_client: httpx.AsyncClient):
+    """Tests HTTP upload when Content-Type header is missing (simulating curl issue)."""
+    uid = "curl-no-content-type"
+    file_content, file_metadata = generate_test_file(size_in_kb=64)
+    
+    # Simulate curl upload without Content-Type header (another potential issue)
+    headers = {
+        'Content-Length': str(file_metadata.size),
+        # Missing Content-Type - curl might not set this for unknown file types
+    }
+    
+    response = await test_client.put(
+        f"/{uid}/{file_metadata.name}", 
+        content=file_content, 
+        headers=headers
+    )
+    
+    # This might work if Content-Type defaults properly, or fail
+    print(f"Response status: {response.status_code}")
+    print(f"Response text: {response.text}")
+
+
+@pytest.mark.anyio
+async def test_curl_upload_zero_content_length(test_client: httpx.AsyncClient):
+    """Tests HTTP upload when Content-Length is 0 (potential curl issue)."""
+    uid = "curl-zero-length"
+    file_content, file_metadata = generate_test_file(size_in_kb=64)
+    
+    # Simulate wrong Content-Length (could happen with curl misuse)
+    headers = {
+        'Content-Type': file_metadata.type,
+        'Content-Length': '0',  # Wrong content length
+    }
+    
+    response = await test_client.put(
+        f"/{uid}/{file_metadata.name}", 
+        content=file_content, 
+        headers=headers
+    )
+    
+    # This should fail with 400 due to size validation (gt=0)
+    assert response.status_code == 400
+    assert "Invalid file metadata" in response.text
+
+
+@pytest.mark.anyio
+async def test_curl_upload_short_filename(test_client: httpx.AsyncClient):
+    """Tests HTTP upload with a very short filename (potential validation issue)."""
+    uid = "curl-short-name"
+    file_content, file_metadata = generate_test_file(size_in_kb=64)
+    
+    # Simulate upload with very short filename
+    short_filename = "a"  # Only 1 character - should fail min_length=2 validation
+    headers = {
+        'Content-Type': file_metadata.type,
+        'Content-Length': str(file_metadata.size),
+    }
+    
+    response = await test_client.put(
+        f"/{uid}/{short_filename}", 
+        content=file_content, 
+        headers=headers
+    )
+    
+    # This should fail with 400 due to filename validation
+    assert response.status_code == 400
+    assert "Invalid file metadata" in response.text
+
+
+@pytest.mark.anyio
+async def test_curl_upload_with_expect_100_continue(test_client: httpx.AsyncClient):
+    """Tests HTTP upload with Expect: 100-continue header (like curl --expect100-timeout)."""
+    uid = "curl-expect-100"
+    file_content, file_metadata = generate_test_file(size_in_kb=64)
+    
+    # Simulate curl with --expect100-timeout flag
+    headers = {
+        'Content-Type': file_metadata.type,
+        'Content-Length': str(file_metadata.size),
+        'Expect': '100-continue',  # This header is set by curl --expect100-timeout
+    }
+    
+    async def sender():
+        response = await test_client.put(
+            f"/{uid}/{file_metadata.name}", 
+            content=file_content, 
+            headers=headers
+        )
+        print(f"Upload response status: {response.status_code}")
+        print(f"Upload response text: {response.text}")
+        return response
+    
+    async def receiver():
+        await anyio.sleep(1.0)  # Wait for upload to start
+        response = await test_client.get(f"/{uid}?download=true")
+        print(f"Download response status: {response.status_code}")
+        return response
+    
+    async with anyio.create_task_group() as tg:
+        tg.start_soon(sender)
+        tg.start_soon(receiver)
\ No newline at end of file
diff --git a/views/websockets.py b/views/websockets.py
index 33656fb..06176b6 100644
--- a/views/websockets.py
+++ b/views/websockets.py
@@ -76,10 +76,8 @@ async def websocket_upload(websocket: WebSocket, uid: str):
     transfer.info("△ Upload complete.")
 
 
-@warnings.deprecated(
-    "This endpoint is deprecated and will be removed soon. "
-    "It should not be used for reference, and it is disabled on the website."
-)
+# Deprecated: This endpoint is deprecated and will be removed soon.
+# It should not be used for reference, and it is disabled on the website.
 @router.websocket("/receive/{uid}")
 async def websocket_download(background_tasks: BackgroundTasks, websocket: WebSocket, uid: str):
     await websocket.accept()