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我想實現一個小通信方案來處理從Android設備到Node.js服務器的HTTP請求。使用當前代碼,Android端在收到標題響應後關閉連接。從Android到Node.js服務器的持久HTTP連接
爪哇:
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;
}
節點:
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);
此外節點上側的connection
事件沒有被調用,每個請求被直接用管道輸送到data
事件。
有沒有辦法建立一個持久的HTTP連接,以便節點服務器可以在連接運行時跟蹤它,直到Android端再次關閉它?
服務器沒有辦法跟蹤正常http連接中的客戶端,因此我認爲,建立一個持久的HTTP連接並不是必需的(也可能是)。 – marcel