客户端IP返回::1的解决办法
刚刚测试程序,一个功能要求获取客户端IP,然而在本机测试过程中发现,客户端(本机)IP始终返回::1,获取 IP 部份的代码如下:
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
于是最终获取倒的是因无法匹配而返回的默认IP 0.0.0.0
google了一下,没有结果。
继续想办法。发现不影响获取其它客户端(非本机)IP。根据此现象,我想应该是localhost引起的,于是查看host映射,果然发现::1
(Host映射查看方法 C:\Windows\System32\drivers\etc 文件hosts)
# Copyright (c) 1993-2006 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
127.0.0.1 localhost
::1 localhost
原来是因为操作系统开启了IPV6,它对localhost进行了映射的原因。如果我们需要获取的IP是IPV4的,那么可以删掉::1映射。
如果将来我们需要获取的是IPV6的IP,那么就需要这样的映射。然后程序里统一实现获取IPv6的代码。