WebSocket 1003 Unsupported Data vs 1010 Mandatory Extension
Both WebSocket 1003 (Unsupported Data) and 1010 (Mandatory Extension) belong to the WebSocket Close Codes category. 1003 indicates that an endpoint received a type of data it cannot accept. For example, a text-only endpoint received a binary message, or vice versa. Meanwhile, 1010 means that the client is terminating the connection because the server did not negotiate one or more expected extensions in the handshake response.
الوصف
An endpoint received a type of data it cannot accept. For example, a text-only endpoint received a binary message, or vice versa.
متى تراه
The client sent a binary frame to a server that only handles text, or a text frame to a binary-only endpoint. The receiver does not know how to process this data type.
كيفية الإصلاح
Verify the message type (text vs binary) matches what the server expects. Update your client to send the correct opcode for the data format.
الوصف
The client is terminating the connection because the server did not negotiate one or more expected extensions in the handshake response.
متى تراه
The client requested a required WebSocket extension (e.g., permessage-deflate compression) during the handshake, but the server did not include it in its response.
كيفية الإصلاح
Enable the required extension on the server, or update the client to make the extension optional. Check the Sec-WebSocket-Extensions header in the handshake response.
الفروق الرئيسية
WebSocket 1003: An endpoint received a type of data it cannot accept. For example, a text-only endpoint received a binary message, or vice versa.
WebSocket 1010: The client is terminating the connection because the server did not negotiate one or more expected extensions in the handshake response.
You encounter 1003 when the client sent a binary frame to a server that only handles text, or a text frame to a binary-only endpoint. The receiver does not know how to process this data type.
You encounter 1010 when the client requested a required WebSocket extension (e.g., permessage-deflate compression) during the handshake, but the server did not include it in its response.
متى تستخدم أيًا منهما
For 1003 (Unsupported Data): Verify the message type (text vs binary) matches what the server expects. Update your client to send the correct opcode for the data format. For 1010 (Mandatory Extension): Enable the required extension on the server, or update the client to make the extension optional. Check the Sec-WebSocket-Extensions header in the handshake response.