...

1 files changed, 34 insertions, 0 deletions

diff --git a/rpc/types.go b/rpc/types.go
index 7312397..202dd79 100644
--- a/rpc/types.go
+++ b/rpc/types.go
@@ -17,6 +17,7 @@
 package rpc
 
 import (
+	"context"
 	"fmt"
 	"math"
 	"strings"
@@ -24,6 +25,39 @@ import (
 	"github.com/ava-labs/go-ethereum/common/hexutil"
 )
 
+// API describes the set of methods offered over the RPC interface
+type API struct {
+	Namespace string      // namespace under which the rpc methods of Service are exposed
+	Version   string      // api version for DApp's
+	Service   interface{} // receiver instance which holds the methods
+	Public    bool        // indication if the methods must be considered safe for public use
+}
+
+// Error wraps RPC errors, which contain an error code in addition to the message.
+type Error interface {
+	Error() string  // returns the message
+	ErrorCode() int // returns the code
+}
+
+// ServerCodec implements reading, parsing and writing RPC messages for the server side of
+// a RPC session. Implementations must be go-routine safe since the codec can be called in
+// multiple go-routines concurrently.
+type ServerCodec interface {
+	Read() (msgs []*jsonrpcMessage, isBatch bool, err error)
+	Close()
+	jsonWriter
+}
+
+// jsonWriter can write JSON messages to its underlying connection.
+// Implementations must be safe for concurrent use.
+type jsonWriter interface {
+	Write(context.Context, interface{}) error
+	// Closed returns a channel which is closed when the connection is closed.
+	Closed() <-chan interface{}
+	// RemoteAddr returns the peer address of the connection.
+	RemoteAddr() string
+}
+
 type BlockNumber int64
 
 const (