从 Android 到 Node.js 服务器的持久 HTTP-connection
Persistent HTTP-connection from Android to Node.js server
我正在尝试实现一个小的通信方案来处理从 Android 设备到 Node.js 服务器的 HTTP-requests。使用当前代码,Android 端在收到来自 header.
的响应后关闭连接
Java:
public String doInBackground(Void... params) {
URL url = new URL("http://" + mServer.getHost() + ":" + mServer.getPort() + "/" + mPath);
HttpURLConnection http = (HttpURLConnection) url.openConnection();
http.setConnectTimeout(TIMEOUT);
http.setRequestMethod("POST");
http.setDoOutput(true);
http.connect();
OutputStream out = http.getOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(out);
writer.write(mJson);
writer.flush();
writer.close();
mResponseCode = http.getResponseCode();
if (mResponseCode != 200) {
http.disconnect();
return "";
}
InputStreamReader in = new InputStreamReader(http.getInputStream());
BufferedReader br = new BufferedReader(in);
char[] chars = new char[BUF_SIZE];
int size = br.read(chars);
String response = new String(chars).substring(0, size);
//http.disconnect();
return response;
}
节点:
this.socket = http.createServer((req, res) => {
req.on('data', (chunk) => {
this.log.info("DATA");
obj = JSON.parse(chunk.toString());
});
req.on('close', () => {
this.log.info("CLOSE");
});
req.on('connection', (socket) => {
this.log.info("CONNECTION");
});
req.on('end', () => {
this.log.info("END");
});
});
this.socket.listen(this.port, this.host);
此外,永远不会调用节点端的 connection
事件,每个请求都直接通过管道传送到 data
事件中。
有没有办法建立一个持久的 HTTP-connection 以便节点服务器可以在连接 运行 时跟踪它,直到 Android 端再次关闭它?
Socket.io 似乎是实现从 Android 到 Node.js 服务器的持久连接的合理库。
我正在尝试实现一个小的通信方案来处理从 Android 设备到 Node.js 服务器的 HTTP-requests。使用当前代码,Android 端在收到来自 header.
的响应后关闭连接Java:
public String doInBackground(Void... params) {
URL url = new URL("http://" + mServer.getHost() + ":" + mServer.getPort() + "/" + mPath);
HttpURLConnection http = (HttpURLConnection) url.openConnection();
http.setConnectTimeout(TIMEOUT);
http.setRequestMethod("POST");
http.setDoOutput(true);
http.connect();
OutputStream out = http.getOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(out);
writer.write(mJson);
writer.flush();
writer.close();
mResponseCode = http.getResponseCode();
if (mResponseCode != 200) {
http.disconnect();
return "";
}
InputStreamReader in = new InputStreamReader(http.getInputStream());
BufferedReader br = new BufferedReader(in);
char[] chars = new char[BUF_SIZE];
int size = br.read(chars);
String response = new String(chars).substring(0, size);
//http.disconnect();
return response;
}
节点:
this.socket = http.createServer((req, res) => {
req.on('data', (chunk) => {
this.log.info("DATA");
obj = JSON.parse(chunk.toString());
});
req.on('close', () => {
this.log.info("CLOSE");
});
req.on('connection', (socket) => {
this.log.info("CONNECTION");
});
req.on('end', () => {
this.log.info("END");
});
});
this.socket.listen(this.port, this.host);
此外,永远不会调用节点端的 connection
事件,每个请求都直接通过管道传送到 data
事件中。
有没有办法建立一个持久的 HTTP-connection 以便节点服务器可以在连接 运行 时跟踪它,直到 Android 端再次关闭它?
Socket.io 似乎是实现从 Android 到 Node.js 服务器的持久连接的合理库。