@solana/kit · RPC subscriptions (WebSocket)

Solana error #8190004

RPC_SUBSCRIPTIONS__CHANNEL_FAILED_TO_CONNECT

Appears as Solana error #8190004; Decode this error by running `npx @solana/errors decode -- 8190004 '…'`

Message

WebSocket failed to connect

What it means

WebSocket connection and subscription lifecycle errors.

What to do

Check the wss:// URL and that the provider supports subscriptions on your plan.
Handle abort signals: subscriptions end when their AbortSignal fires.

@solana/errors 8.4.0 source ↗All RPC subscriptions (WebSocket) codes →

Decode it locally instead

npx @solana/errors decode -- 8190004 '<base64 context>'

In development, import from @solana/kit as usual and the full message is thrown. In production the message is stripped to keep bundles small; the error object still carries error.context with the same values this page decodes, and isSolanaError(err, SOLANA_ERROR__RPC_SUBSCRIPTIONS__CHANNEL_FAILED_TO_CONNECT) lets you branch on it.

Other RPC subscriptions (WebSocket) codes

8190000CANNOT_CREATE_SUBSCRIPTION_PLAN 8190001EXPECTED_SERVER_SUBSCRIPTION_ID 8190002CHANNEL_CLOSED_BEFORE_MESSAGE_BUFFERED 8190003CHANNEL_CONNECTION_CLOSED

Decode another error

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