node: fix listening on IPv6 address (#27628) (#27635)

node/config.go

@@ -19,6 +19,7 @@ package node
 import (
 	"crypto/ecdsa"
 	"fmt"
+	"net"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -263,7 +264,7 @@ func (c *Config) HTTPEndpoint() string {
 	if c.HTTPHost == "" {
 		return ""
 	}
-	return fmt.Sprintf("%s:%d", c.HTTPHost, c.HTTPPort)
+	return net.JoinHostPort(c.HTTPHost, fmt.Sprintf("%d", c.HTTPPort))
 }
 
 // DefaultHTTPEndpoint returns the HTTP endpoint used by default.
@@ -278,7 +279,7 @@ func (c *Config) WSEndpoint() string {
 	if c.WSHost == "" {
 		return ""
 	}
-	return fmt.Sprintf("%s:%d", c.WSHost, c.WSPort)
+	return net.JoinHostPort(c.WSHost, fmt.Sprintf("%d", c.WSPort))
 }
 
 // DefaultWSEndpoint returns the websocket endpoint used by default.

node/rpcstack.go

@@ -112,7 +112,7 @@ func (h *httpServer) setListenAddr(host string, port int) error {
 	}
 
 	h.host, h.port = host, port
-	h.endpoint = fmt.Sprintf("%s:%d", host, port)
+	h.endpoint = net.JoinHostPort(host, fmt.Sprintf("%d", port))
 	return nil
 }