HttpsURLConnection 和间歇性连接 [英] HttpsURLConnection and intermittent connections

问题描述

我希望有人可以帮助我解决断断续续的连接问题使用 HttpsURLConnection 的代码.我正在使用的代码是下面:

I'm hoping someone could help me out with intermittent connections I'm getting using code with HttpsURLConnection. The code I'm using is below:

HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setReadTimeout(10 * 1000); 
if conn.getResponseCode() != 200) { 
            Log.v(TAG, "error code:" + conn.getResponseCode()); 
} 

每次我用它来拉动一个json 文件.但是，当我再次使用连接发送命令时，它总是第一次失败.如果我发送它通常会起作用命令快速(在 5 秒内)，但如果我等待一段时间就会失败.我认为它不是 SSL 问题，因为它是第一次连接正确，但我在这里可能是错的.我也尝试了很多不同的变体，例如添加:

The connection works the first time everytime when I use it to pull a json file. However, when I use the connection again to send a command, it always fails the first time. It then typically works if I send the command quickly ( within 5 seconds), but fails if I wait a while. I don't think its a SSL issue because it connects the first time correctly, but I could be wrong here. I also tried many different variations such as adding:

conn.setUseCaches(false); 
conn.setRequestProperty("Connection","Keep-Alive"); 
conn.getHostnameVerifier(); 
conn.getSSLSocketFactory(); 
conn.setDoOutput(true); 
conn.setDoInput(true); 
conn.setRequestMethod("POST"); 
conn.wait(100); 

但是，我没有运气.任何帮助将不胜感激.

However, I had no luck. Any help would be greatly appreciated.

推荐答案

先试试 System.setProperty("http.keepAlive", "false");

HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();

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