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39 lines (31 loc) · 784 Bytes
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listener.go
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39 lines (31 loc) · 784 Bytes
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package httpserver
import (
"net"
"github.com/sourcegraph/sourcegraph/internal/env"
)
// NewListener returns a TCP listener accepting connections
// on the given address.
func NewListener(addr string) (_ net.Listener, err error) {
addr, err = SanitizeAddr(addr)
if err != nil {
return nil, err
}
listener, err := net.Listen("tcp", addr)
if err != nil {
return nil, err
}
return listener, err
}
// SanitizeAddr replaces the host in the given address with
// 127.0.0.1 if no host is supplied or if running in insecure
// dev mode.
func SanitizeAddr(addr string) (string, error) {
host, port, err := net.SplitHostPort(addr)
if err != nil {
return "", err
}
if host == "" && env.InsecureDev {
host = "127.0.0.1"
}
return net.JoinHostPort(host, port), nil
}