Deadloop problem

[persist1116]

When the program is running, I don't know under what circumstances there will be a session connection that keeps opening. In the following code, the value of len has been consistently -1, and running this loop has caused the CPU to remain high. How do I solve this problem
while (true) { byte data[] = new byte[1024]; int len = inputStream.read(data); if (len != -1) { byte[] data1 = Arrays.copyOfRange(data, 0, len); TextMessage textMessage = new TextMessage(data1); if (initValid && isValidBash(textMessage, shellPath)) { break; } else { tryBash = true; initValid = false; } session.sendMessage(textMessage); } }