apollo

const (
	// Client sends this message after plain websocket connection to start the communication with the server
	GQL_CONNECTION_INIT = "connection_init"
	// The server may responses with this message to the GQL_CONNECTION_INIT from client, indicates the server rejected the connection.
	GQL_CONNECTION_ERROR = "connection_error"
	// Client sends this message to execute GraphQL operation
	GQL_START = "start"
	// Client sends this message in order to stop a running GraphQL operation execution (for example: unsubscribe)
	GQL_STOP = "stop"
	// Server sends this message upon a failing operation, before the GraphQL execution, usually due to GraphQL validation errors (resolver errors are part of GQL_DATA message, and will be added as errors array)
	GQL_ERROR = "error"
	// The server sends this message to transfter the GraphQL execution result from the server to the client, this message is a response for GQL_START message.
	GQL_DATA = "data"
	// Server sends this message to indicate that a GraphQL operation is done, and no more data will arrive for the specific operation.
	GQL_COMPLETE = "complete"
	// Server message that should be sent right after each GQL_CONNECTION_ACK processed and then periodically to keep the client connection alive.
	// The client starts to consider the keep alive message only upon the first received keep alive message from the server.
	GQL_CONNECTION_KEEP_ALIVE = "ka"
	// The server may responses with this message to the GQL_CONNECTION_INIT from client, indicates the server accepted the connection. May optionally include a payload.
	GQL_CONNECTION_ACK = "connection_ack"
	// Client sends this message to terminate the connection.
	GQL_CONNECTION_TERMINATE = "connection_terminate"
	// Unknown operation type, for logging only
	GQL_UNKNOWN = "unknown"
	// Internal status, for logging only
	GQL_INTERNAL = "internal"
)

const DisconnectPayload = "{\"type\":\"connection_error\"}"

const PingPayload = "{\"type\":\"ka\"}"