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addr.go
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addr.go
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/*
* Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
*
* 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 internal
import (
"fmt"
"net"
"strconv"
"strings"
"github.com/hazelcast/hazelcast-go-client/hzerrors"
ihzerrors "github.com/hazelcast/hazelcast-go-client/internal/hzerrors"
)
const defaultHost = "127.0.0.1"
func ParseAddr(addr string) (string, int, error) {
addr = strings.TrimSpace(addr)
if addr == "" {
return defaultHost, 0, nil
}
host, port, err := splitHostPort(addr)
if err != nil {
return "", 0, ihzerrors.NewClientError("", err, hzerrors.ErrInvalidAddress)
}
if port < 0 || port > 65535 {
return "", 0, ihzerrors.NewClientError("port not in valid range", err, hzerrors.ErrInvalidAddress)
}
return host, port, nil
}
func splitHostPort(addr string) (host string, port int, err error) {
idx := strings.LastIndex(addr, ":")
if idx == -1 {
return addr, 0, nil
}
port, err = strconv.Atoi(addr[idx+1:])
if err != nil {
return "", 0, fmt.Errorf("invalid port")
}
host, _, err = net.SplitHostPort(addr)
if err != nil {
return "", 0, err
}
if host == "" {
host = defaultHost
}
return host, port, nil
}