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Graph/payload-size-mismatch

AntiPattern

Request Payload Size Mismatch

payload-size-mismatch

Multipart/form-data and serialized payloads fail because boundaries, encoding formats, and content-length expectations drift—requests become malformed or exceed hard size limits, breaking uploads/QR generation when the client over-encodes binary data as JSON/Base64/Deflate.

Node Details

Public graph metadata

Updated5/30/2026

Connections

30 linked nodes

MATCHESSolution

You could set serverURL on your payload config — I see the line that calls req.get. Tension: it attempts to generate the serverURL if none is provided. Outcome: to get around this for now.

MATCHESSolution

the issue was that I was passing in the Data URI as well with the encoding of the file. Outcome: make sure that the string of the file that you're sending doesn't contain this value: `data:@file/png;base64,`.

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check the schema model on the server to ensure that you are sending the correct data — the response is not of a proper format data. Tension: including the required fields like id. Outcome: you can define useMutation for get some correct error.

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In Postman, select form-data and type as File and upload the audio file. — POST /transcribe?song_name=wait&singer=hadar HTTP/1.1. Tension: Check the request body to make sure that it is in the correct format and none of the required fields are missed. Outcome: upload the audio file.

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JavaScript can access the `size` from the File object — using a UI for the upload. Tension: I really would not like to get the file in any endpoint of my application. Outcome: Use this value to populate the `content-length` header value.

MATCHESSolution

Those values require encoding per RFC 2047 — Using `x-amz-meta-filename` suggests that the user-provided meta-data is transferred via HTTP request headers. Tension: This does not work with AWS. Outcome: One Idea was to use the Base64 encoding and do the wrapping/quoting/envelope with string concatenation.

MATCHESSolution

An error occurred (MissingContentLength) when calling the PutObject operation: You must provide the Content-Length HTTP header. — aws s3 sync . s3://. Tension: Unknown options: --content-length,1093865263. Outcome: Try downgrade aws cli version.

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adding a class that extends `OutputStream` and creates a multi-part upload when the buffer reaches the set limit — AWS minimum is 5MB. Tension: end size of the zip can be tens of GB. Outcome: I set it to 10MB.

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I needed to use the MultipartCopy class found in the S3 SDK. Tension: Over 4.5 GB - Use MultipartCopy. Outcome: This is now working...

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The filesize metadata was a number — in the lambda. Tension: I just hadn't ensured that my metadata values were all strings. Outcome: once I converted it to a string in the lambda and added that value to the metadata all was well.

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var md5Based64 = Convert.ToBase64Str — Upload using RestSharp: (failed - Bad Digest). Tension: BadDigest - The Content-MD5 you specified did not match what we received. Outcome: both have the same inputs.

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For multipart + pre-signed uploads from expo react-native with express backend is as follows: — upload a large video file the fastest on RN Expo.

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Just changing the order of the form data in the frontend code worked for me. — uploading the file from Browser. Tension: Aws error message was misleading. Outcome: I just interchanged the position of `x-amz-signature` and `x-amz-security-token`.

MATCHESSolution

I now use `Brotli4j` to compress the certificates bytes BEFORE encoding to a QR. Tension: the data so it will fit into a QR. Outcome: reducing the size of the data.

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I have to pass it the full format of a "timestamp" — in the json we send in Postman/thunder. Tension: otherwise it will fail. Outcome: I found out what is wrong here.

MATCHESSolution

Use the supported approach for Next.js app-route handling—e.g., switch to `formidable` (as suggested) to handle multipart uploads and read the file without relying on the deprecated `bodyParser.sizeLimit` config. Alternatively, move the endpoint to the `pages` directory if you need to use `export const config` bodyParser settings there.

MATCHESSolution

Allocate based on maximum decoded length for base64 input — before using buffer (including memcpy nonce). Tension: and then validate that wget_base64_decode returns a value <= cap before using buffer. Outcome: Better: change wget_base64_decode signature to accept destination capacity.

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Only allow specific file types (JPG, PNG) and impose size limits (OWASP) — Input Validation and Sanitization. Tension: prevent injection attacks. Outcome: Validate and sanitize all uploaded images.

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JWT implementations hash the header.payload bytes with SHA-256 to produce a fixed-length digest, then sign that digest; this keeps signatures smaller and makes signing/verifying efficient while preserving integrity.

MATCHESSolution

Submit the form as POST while overriding the method using the `_method: 'patch'` field, and ensure `forceFormData: true` is set so the file is sent as multipart data.

MATCHESSolution

large file uploads in Spring Boot. Tension: you never hit this limit. Outcome: Once I stopped sending the file in JSON, the problem disappeared.

MATCHESSolution

Important is the content type application/json. — I didn't use an array for the binary files, but I think if you just define another one with the same key, that should work. Tension: I didn't use an array for the binary files. Outcome: if you just define another one with the same key, that should work.

MATCHESSolution

select the multipart data radio button — Postman typically handles the specifics of the multipart request. Tension: Did you manually specify a Content-Type header of multipart/form-data? Outcome: Postman would be more complex like this, for example:.

MATCHESSolution

And multipart file locationCreateFile = fileUpload. Tension: the API consistently picks up the old file instead of the modified version. Outcome: Then status 200.

MATCHESSolution

Form data should be read using `@RequestParam`, not with `@RequestBody` — if you really need JSON. Tension: you’ll have to split it into two separate calls. Outcome: one for the file (form-data) and another for the JSON payload.

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Failed to encode MIC. Tension: I want to sign the MDN based on the AS2 request. Outcome: Data must be specified.

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Added a small helper that calls request.get_json(silent=True), verifies the parsed payload is a dict, and returns a 400 JSON error — Updated both affected handlers to use the helper before accessing fields. Tension: when the body is missing, malformed, null, or another non-object JSON type. Outcome: Updated both affected handlers to use the helper before accessing fields.

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Fix verify_token() to derive payload_bytes using bytes.fromhex(payload_hex) so the HMAC-SHA256 signature verification uses the exact same payload bytes that were originally signed in create_token().

MATCHESSolution

Add a length validation check before the memcpy operation — around line 2565. Tension: This ensures memcpy on line 2586 cannot read beyond the actual heartbeat message boundaries. Outcome: if (payload > s->s3->rrec.length - 3) { SSLerr(...); return 0; }.

MATCHESSolution

Use size_t for all length calculations — src/http.c parse_content_disposition(). Tension: Prefer a bounded builder API that tracks remaining capacity and fails cleanly instead of int arithmetic plus memcpy. Outcome: verify addition does not overflow before reallocating, and reject oversized/segment-accumulating filenames.

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