Project structure refactor:

- Change package name general_server to gateway
- Changing the structure of directories and packages
- Adding vendor to the project

internal/server/rpc/definition.go

@@ -0,0 +1,29 @@
+package rpc
+
+type RPCRequest struct {
+	JSONRPC string           `json:"jsonrpc"`
+	ID      any              `json:"id"`
+	Method  string           `json:"method"`
+	Params  RPCRequestParams `json:"params"`
+}
+
+type RPCRequestParams struct {
+	ContextVersion string         `json:"context-version"`
+	Method         map[string]any `json:"method-params"`
+}
+
+type RPCResponse struct {
+	JSONRPC string `json:"jsonrpc"`
+	ID      any    `json:"id"`
+	Result  any    `json:"result"`
+}
+
+type RPCError struct {
+	JSONRPC string `json:"jsonrpc"`
+	ID      any    `json:"id"`
+	Error   any    `json:"error"`
+}
+
+const (
+	JSONRPCVersion = "2.0"
+)

internal/server/rpc/errors.go

@@ -0,0 +1,39 @@
+package rpc
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+const (
+	ErrParseError  = -32700
+	ErrParseErrorS = "Parse error"
+
+	ErrInvalidRequest  = -32600
+	ErrInvalidRequestS = "Invalid Request"
+
+	ErrMethodNotFound  = -32601
+	ErrMethodNotFoundS = "Method not found"
+
+	ErrInvalidParams  = -32602
+	ErrInvalidParamsS = "Invalid params"
+
+	ErrInternalError  = -32603
+	ErrInternalErrorS = "Internal error"
+
+	ErrContextVersion  = -32010
+	ErrContextVersionS = "Invalid context version"
+)
+
+func WriteRouterError(w http.ResponseWriter, status int, e *RPCError) error {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+
+	data, err := json.Marshal(e)
+	if err != nil {
+		return err
+	}
+
+	_, err = w.Write(data)
+	return err
+}