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Update 15.1.md

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glight2000
2015-12-08 20:09:55 +08:00
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@@ -281,6 +281,7 @@ func checkError(error error, info string) {
>(**译者注：应该是由于go版本的更新，会提示os.EAGAIN undefined ,修改后的代码：[simple_tcp_server_v1.go](examples/chapter_15/simple_tcp_server_v1.go)**)
都有哪些改进？
（1）服务器地址和端口不再是硬编码，而是通过命令行传入参数并通过`flag`包来读取这些参数。这里使用了`flag.NArg()`检查是否按照期望传入了2个参数：
```go
if flag.NArg() != 2{