Interface Contract

1 Interface Contract

• All RPC interfaces are HTTP protocols.
• All the data transmitted by the message are in JSON format.
• The RPC interfaces of this system are all POST method requests.

1.1 Request Format

Request message structure:

{
    "jsonrpc":"2.0",
    "id":int32,
    "method":"Chain33.Method",
    "params":[]
}

Description of each parameter:

Parameter	Type	If Necessary	Description
id	int32	yes	interface id temporarily out of use
method	string	yes	requested method name of RPC
params	array	no	additional parameter, default to null

1.2 Response Format

Response message structure:

{
    "id":int32,
    "result":{},
    "error":null
}

Description of each parameter:

Parameter	Type	Description
id	int32	correspond to the request id
result	string or json	returned data ,different format returned by different methods,pure string or data in json format
error	string	fill in error information on error, empty when there is no error