Experiment: wait for input

app/src/main/java/com/sun/mail/iap/ResponseInputStream.java

@@ -75,8 +75,23 @@ public class ResponseInputStream {
 	    boolean gotCRLF=false;
 
 	    // Read a CRLF terminated line from the InputStream
-	    while (!gotCRLF &&
-		   ((b =  bin.read()) != -1)) {
+		int wait = 1;
+	    while (!gotCRLF) {
+		b = bin.read();
+		if (b == -1) {
+			wait *= 10;
+			if (wait > 1000)
+				throw new IOException("Connection dropped by server?" ,
+						new Throwable(new String(buffer, 0, idx)));
+			else
+				try {
+					Thread.sleep(wait);
+					continue;
+				} catch (InterruptedException ex) {
+					eu.faircode.email.Log.w(ex);
+				}
+		} else
+			wait = 1;
 		if (b == '\n') {
 		    if ((idx > 0) && buffer[idx-1] == '\r')
 			gotCRLF = true;
@@ -91,9 +106,6 @@ public class ResponseInputStream {
 		buffer[idx++] = (byte)b;
 	    }
 
-	    if (b == -1)
-		throw new IOException("Connection dropped by server?");
-
 	    // Now lets check for literals : {<digits>}CRLF
 	    // Note: index needs to >= 5 for the above sequence to occur
 	    if (idx < 5 || buffer[idx-3] != '}')
@@ -131,10 +143,23 @@ public class ResponseInputStream {
 		 * so call repeatedly till we are done
 		 */
 		int actual;
+		wait = 1;
 		while (count > 0) {
 		    actual = bin.read(buffer, idx, count);
-		    if (actual == -1)
-			throw new IOException("Connection dropped by server?");
+			if (actual == -1) {
+				wait *= 10;
+				if (wait > 1000)
+					throw new IOException("Connection dropped by server?" ,
+							new Throwable(new String(buffer, 0, idx)));
+				else
+					try {
+						Thread.sleep(wait);
+						continue;
+					} catch (InterruptedException ex) {
+						eu.faircode.email.Log.w(ex);
+					}
+			} else
+				wait = 1;
 		    count -= actual;
 		    idx += actual;
 		}