62 lines
2.0 KiB
Go
62 lines
2.0 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rpc
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import (
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"encoding/json"
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"io"
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"net"
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)
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// inProcClient is an in-process buffer stream attached to an RPC server.
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type inProcClient struct {
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server *Server
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cl io.Closer
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enc *json.Encoder
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dec *json.Decoder
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}
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// Close tears down the request channel of the in-proc client.
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func (c *inProcClient) Close() {
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c.cl.Close()
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}
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// NewInProcRPCClient creates an in-process buffer stream attachment to a given
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// RPC server.
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func NewInProcRPCClient(handler *Server) Client {
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p1, p2 := net.Pipe()
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go handler.ServeCodec(NewJSONCodec(p1), OptionMethodInvocation|OptionSubscriptions)
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return &inProcClient{handler, p2, json.NewEncoder(p2), json.NewDecoder(p2)}
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}
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// Send marshals a message into a json format and injects in into the client
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// request channel.
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func (c *inProcClient) Send(msg interface{}) error {
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return c.enc.Encode(msg)
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}
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// Recv reads a message from the response channel and tries to parse it into the
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// given msg interface.
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func (c *inProcClient) Recv(msg interface{}) error {
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return c.dec.Decode(msg)
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}
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// Returns the collection of modules the RPC server offers.
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func (c *inProcClient) SupportedModules() (map[string]string, error) {
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return SupportedModules(c)
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}
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