sample.txt

----------------------------434049563556637648550474
content-disposition: form-data; name="foo"
content-type: application/octet-stream

foo
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content-disposition: form-data; name="bar"
content-type: application/octet-stream

bar
----------------------------434049563556637648550474
content-disposition: form-data; name="file"; filename="tsconfig.json"
content-type: application/octet-stream

{
  "compilerOptions": {
    "target": "es2018",
    "baseUrl": ".",
    "paths": {
      "deno": ["./deno.d.ts"],
      "https://*": ["../../.deno/deps/https/*"],
      "http://*": ["../../.deno/deps/http/*"]
    }
  }
}

----------------------------434049563556637648550474
content-disposition: form-data; name="file2"; filename="中文.json"
content-type: application/octet-stream

{
  "test": "filename"
}

----------------------------434049563556637648550474
content-disposition: form-data; name="baz"
content-type: application/octet-stream

str1
----------------------------434049563556637648550474
content-disposition: form-data; name="baz"
content-type: application/octet-stream

str2
----------------------------434049563556637648550474--