Code is not properly escaped when serialized in JSON

[artmoskvin]

When using Langchain agent with the update_lines tool, the code cannot be deserialized by Hide API. It usually fails with EOF or invalid character error.

[artmoskvin]

Example payload:

{"type": "linediff", "linediff": {"startLine": 117, "endLine": 117, "content": "\n@router.post(\n    \"/exponentiation\",\n    summary=\"Calculate the exponentiation of two numbers\",\n    response_model=MathsResult,\n)\ndef exponentiation(maths_input: MathsIn) -> MathsResult:\n    \"\"\"Calculates the exponentiation of two whole numbers.\"\"\"\n    return MathsResult(\n        **maths_input.dict(),\n        operation=\"exponentiation\",\n        result=maths_input.number1 ** maths_input.number2,\n    )\n"}}

Response: 404 Failed parsing request body: EOF

[aleh-null]

hm, tried to reproduce this but it seems to work as here

• Maybe the dst struct is different
• json string is not wrapped as string literal or something similar

[artmoskvin]

Just for historical records, it turned out to be a problem with a file path in URL. By default, if a URL is not clean, e.g. contains 2 slash symbols path/subpath//file.txt, the server tries to clean it and redirect. But for some reason Gorilla loses the payload during redirection, so parsing fails with EOF.

We disabled cleaning and added middleware to validate path, e.g. to reject paths starting with /.