forked from unit-io/unitdb
/
hdl_tcp.go
72 lines (62 loc) · 1.58 KB
/
hdl_tcp.go
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/*
* Copyright 2020 Saffat Technologies, Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net
import (
"net"
"time"
)
// //onAccept is a callback which get called when a connection is accepted
// type TcpHandler func(c net.Conn, proto Proto)
type TcpServer server
func NewTcpServer(opts ...Options) *TcpServer {
srv := &TcpServer{
opts: new(options),
}
WithDefaultOptions().set(srv.opts)
for _, opt := range opts {
opt.set(srv.opts)
}
return srv
}
func (s *TcpServer) Serve(list net.Listener) error {
defer list.Close()
var tempDelay time.Duration // how long to sleep on accept failure
for {
conn, err := list.Accept()
if err != nil {
select {
case <-signalHandler():
return ErrServerClosed
default:
}
if netErr, ok := err.(net.Error); ok && netErr.Temporary() {
if tempDelay == 0 {
tempDelay = 5 * time.Millisecond
} else {
tempDelay *= 2
}
if max := 1 * time.Second; tempDelay > max {
tempDelay = max
}
time.Sleep(tempDelay)
continue
}
return err
}
tempDelay = 0
go s.Handler(conn)
}
}