[英]Cannot get http server work on android
I have a http server code (I tried both TJWS or NanoHTTPD), the client from the same application would connect to server running on port 8080 or whatever. 我有一个http服务器代码(我尝试过TJWS或NanoHTTPD),来自同一应用程序的客户端将连接到端口8080或任何端口上运行的服务器。
I am starting server object in a separate AsyncTask so it should be okay. 我正在单独的AsyncTask中启动服务器对象,因此应该可以。
While NanoHTTPD completely failed to start other ways I can see from TJWS logs, it says something like; 虽然NanoHTTPD完全无法从TJWS日志中看到其他启动方式,但它表示类似:
server listening on 0.0.0.0/0.0.0.0 port:0 localport:8080
This means server started successfully, first question is 0.0.0.0 bind address acceptable? 这意味着服务器成功启动,第一个问题是0.0.0.0绑定地址可接受吗? I mean it should be 127.0.0.1 instead?
我的意思是应该改为127.0.0.1? sorry if that is a noob question.
抱歉,如果这是一个菜鸟问题。
When I connect to my emulator using adb shell and run netstat, I can see the following lines 当我使用adb shell连接到仿真器并运行netstat时,可以看到以下几行
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:5037 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:5555 0.0.0.0:* LISTEN
tcp 0 0 10.0.2.15:5555 10.0.2.2:52132 ESTABLISHED
tcp6 0 0 :::8080 :::* LISTEN
By googling I learned that 0 :::8080 means server is listening on ipv6 and ipv4 both and that is okay. 通过谷歌搜索,我了解到0 ::: 8080意味着服务器正在ipv6和ipv4上监听,这没关系。
But from my client code when i tried to access it continues to wait for eternity. 但是当我尝试访问它的客户端代码时,它继续等待永恒。
my httpClient Code 我的httpClient代码
try {
URL url = new URL("http://0.0.0.0:"+8080+"/media");
URLConnection conn = url.openConnection();
InputStream is = conn.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line;
while((line = br.readLine()) != null){
Log.d("server", line);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
For the server, the address 0.0.0.0 is like a wildcard and means, it is listening on all IP addresses the device has. 对于服务器,地址0.0.0.0就像一个通配符,意味着它正在侦听设备拥有的所有IP地址。
For the client, you need to use a real IP address like 127.0.0.1 对于客户端,您需要使用真实的IP地址,例如127.0.0.1
After debugging a little I found that problem is not where client opens a connection but issue was at where server was starting it never returned onPostExecute() method, but after wrapping my server start code inside a Runnable 经过一点调试之后,我发现问题不是客户端打开连接的地方,而是服务器启动的地方,它从未返回onPostExecute()方法,而是在将服务器启动代码包装在Runnable中之后
new Thread(new Runnable() {
@Override
public void run() {
Log.d("server", "server starting on port: " + port);
srv.serve();
}
}).start();
it Works!! 有用!!
Server is a infinite loop so does it have to be started from inside thread? 服务器是一个无限循环,是否必须从线程内部启动? I thought AsyncTask can handle that?
我以为AsyncTask可以处理?
Its also worth mentioning that client side connection must also be wrapped inside AsyncTask 还值得一提的是,客户端连接也必须包装在AsyncTask中
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