forked from topfreegames/pitaya
/
tcp_acceptor.go
126 lines (109 loc) · 3.26 KB
/
tcp_acceptor.go
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// Copyright (c) nano Author and TFG Co. All Rights Reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package acceptor
import (
"crypto/tls"
"net"
"github.com/topfreegames/pitaya/constants"
"github.com/topfreegames/pitaya/logger"
)
// TCPAcceptor struct
type TCPAcceptor struct {
addr string
connChan chan net.Conn
listener net.Listener
running bool
certFile string
keyFile string
}
// NewTCPAcceptor creates a new instance of tcp acceptor
func NewTCPAcceptor(addr string, certs ...string) *TCPAcceptor {
keyFile := ""
certFile := ""
if len(certs) != 2 && len(certs) != 0 {
panic(constants.ErrInvalidCertificates)
} else if len(certs) == 2 {
certFile = certs[0]
keyFile = certs[1]
}
return &TCPAcceptor{
addr: addr,
connChan: make(chan net.Conn),
running: false,
certFile: certFile,
keyFile: keyFile,
}
}
// GetAddr returns the addr the acceptor will listen on
func (a *TCPAcceptor) GetAddr() string {
if a.listener != nil {
return a.listener.Addr().String()
}
return ""
}
// GetConnChan gets a connection channel
func (a *TCPAcceptor) GetConnChan() chan net.Conn {
return a.connChan
}
// Stop stops the acceptor
func (a *TCPAcceptor) Stop() {
a.running = false
a.listener.Close()
}
func (a *TCPAcceptor) hasTLSCertificates() bool {
return a.certFile != "" && a.keyFile != ""
}
// ListenAndServe using tcp acceptor
func (a *TCPAcceptor) ListenAndServe() {
if a.hasTLSCertificates() {
a.ListenAndServeTLS(a.certFile, a.keyFile)
return
}
listener, err := net.Listen("tcp", a.addr)
if err != nil {
logger.Log.Fatalf("Failed to listen: %s", err.Error())
}
a.listener = listener
a.running = true
a.serve()
}
// ListenAndServeTLS listens using tls
func (a *TCPAcceptor) ListenAndServeTLS(cert, key string) {
crt, err := tls.LoadX509KeyPair(cert, key)
if err != nil {
logger.Log.Fatalf("Failed to listen: %s", err.Error())
}
tlsCfg := &tls.Config{Certificates: []tls.Certificate{crt}}
listener, err := tls.Listen("tcp", a.addr, tlsCfg)
a.listener = listener
a.running = true
a.serve()
}
func (a *TCPAcceptor) serve() {
defer a.Stop()
for a.running {
conn, err := a.listener.Accept()
if err != nil {
logger.Log.Errorf("Failed to accept TCP connection: %s", err.Error())
continue
}
a.connChan <- conn
}
}