Websocket Frame Decoder
Strictly decode an uncompressed single-direction frame stream: masking, canonical lengths, control constraints, fragmented UTF-8/binary messages and close reasons. Role-specific masking requirements are reported as a limitation because sender role is not supplied. Reserved extensions/opcodes, incomplete fragments and malformed UTF-8 reject the whole input. No socket/handshake is opened. 32 KiB text / 16 KiB binary / 256 frames.
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Results
Review the settings and run. Editing inputs clears old results.
Processing model and limits
Strictly decode an uncompressed single-direction frame stream: masking, canonical lengths, control constraints, fragmented UTF-8/binary messages and close reasons. Role-specific masking requirements are reported as a limitation because sender role is not supplied. Reserved extensions/opcodes, incomplete fragments and malformed UTF-8 reject the whole input. No socket/handshake is opened. 32 KiB text / 16 KiB binary / 256 frames.
Data and model checked: RFC 6455 ↗Source tool controls ↗
How to use this tool
Load the example, confirm field units and processing rules, then run locally. Editing any input clears the old result. Copy or download the complete output explicitly.
When not to use it
Strictly decode an uncompressed single-direction frame stream: masking, canonical lengths, control constraints, fragmented UTF-8/binary messages and close reasons. Role-specific masking requirements are reported as a limitation because sender role is not supplied. Reserved extensions/opcodes, incomplete fragments and malformed UTF-8 reject the whole input. No socket/handshake is opened. 32 KiB text / 16 KiB binary / 256 frames.