# Gateway Access Instruction

## Key Parameters

- Access key: `accessKey`, created in the portal, the user cannot access the blockchain without the key.

- Target chain type: `chainType`, configured in the data center system, the message cannot be forwarded if it's wrong.

- Protocol: `protocol`, message-passing protocol, e.g. http, grpc.

## Gateway Request Format

### HTTP Request

- `https://[domain:port]/api/[accessKey]/[chainType]/rpc/[chain_path]`

- Example: `https://[domain:port]/api/015416c06ef74ac38a92521792f97e7d/spartanone/rpc`

### WebSocket Request

- `wss://[domain:port]/api/[accessKey]/[chainType]/ws/[chain_path]`

- Example: `wss://[ domain:port]/api/015416c06ef74ac38a92521792f97e7d/spartanone/ws`

### gRPC Request

`[domain:port]`

Request header:

- x-api-key: `[accessKey]`

- x-api-chain-type: `[chainType]`

> [!Note|style:flat]

> - `[domain]`: domain name, you can apply it by yourself.

> - `[port]`: the port number to distinguish different protocols, e.g. http, grpc, you can define it yourself.

> - `[chain_path]`: is not required, can be null, user can add this parameter if needed.

> - The access information can be found in the notification email of Network Access Information.

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