C# TCP 错误代码 10061：无法建立连接，因为目标机器主动拒绝它
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TCP error code 10061: No connection could be made because the target machine actively refused it
提问by Ranjita Das
Could not connect to net.tcp://localhost:5051/user. The connection attempt lasted for a time span of 00:00:02.0600206. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:5051.
无法连接到 net.tcp://localhost:5051/user。连接尝试持续了 00:00:02.0600206 的时间跨度。TCP 错误代码 10061：无法建立连接，因为目标机器主动拒绝它 127.0.0.1:5051。
Firewall is block? Have any Idea?
防火墙是块？有什么想法吗？
