I am stuck in java.net.SocketInputStream.socketRead0 (Native Method). See Dump flow, as shown below, it has been in this state for 3 hours.
Thread-0" prio=10 tid=0x00007facd02a5000 nid=0x309 runnable [0x00007facd4a43000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:150) at java.net.SocketInputStream.read(SocketInputStream.java:121) at sun.security.ssl.InputRecord.readFully(InputRecord.java:442) at sun.security.ssl.InputRecord.read(InputRecord.java:480) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927) - locked <0x00000000e34a0428> (a java.lang.Object) at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:884) at sun.security.ssl.AppInputStream.read(AppInputStream.java:102) - locked <0x00000000e34a0590> (a sun.security.ssl.AppInputStream) at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) at java.io.BufferedInputStream.read1(BufferedInputStream.java:275) at java.io.BufferedInputStream.read(BufferedInputStream.java:334) - locked <0x00000000e30408b8> (a java.io.BufferedInputStream) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:633) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:579) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1322) - locked <0x00000000e3031d00> (a sun.net.www.protocol.https.DelegateHttpsURLConnection) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254) - locked <0x00000000e3031c80> (a sun.net.www.protocol.https.HttpsURLConnectionImpl)
And I set the connection timeout and read timeout for URLConnection. The following is a snippet of code. Therefore, I do not know why it hangs on java.net.SocketInputStream.socketRead0. Sometimes I have such a problem. Any suggestion appreciated!
public String sendPost(String params) throws Throwable { PrintWriter out = null; String htmlContent = null; try { StringBuffer strBuffer = new StringBuffer(); URL url = new URL(this.webUrl); URLConnection urlConnection = url.openConnection(); urlConnection.setConnectTimeout(3000); urlConnection.setReadTimeout(3000); urlConnection.setRequestProperty("accept", "*/*"); urlConnection.setRequestProperty("connection", "Keep-Alive"); urlConnection.setRequestProperty("user-agent", "***"); urlConnection.setDoOutput(true); urlConnection.setDoInput(true); out = new PrintWriter(urlConnection.getOutputStream()); out.print(params); out.flush(); BufferedReader bufferdReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "utf-8")); String readLine = null; try { while ((readLine = bufferdReader.readLine()) != null) { strBuffer.append(readLine); } } catch (Throwable e) { return htmlContent; } htmlContent = strBuffer.toString(); bufferdReader.close();
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