我將來自router.bittorrent.com的find_node響應的節點解碼爲字符串,並向解碼的「節點」發送了find_node請求,但是我從未修改過來自該「節點」的find_node響應,我懷疑解碼「節點」是錯誤的,這是代碼:如何解碼java中的緊湊節點信息?
byte[] nodesBytes = ((String)nodes).getBytes();
ByteBuffer buffer = ByteBuffer.wrap(nodesBytes);
int size = nodesBytes.length/26;
for (int i = 0; i < size; i++) {
byte[] bytes = new byte[26];
byte[] nodeIdBytes = Arrays.copyOfRange(bytes, 0, 20);
byte[] ipBytes = Arrays.copyOfRange(bytes, 20, 24);
byte[] portBytes = Arrays.copyOfRange(bytes, 24, 26);
RoutingTable.RoutingNode routingNode = new RoutingTable.RoutingNode();
try {
routingNode.nodeId = nodeIdBytes;
routingNode.ip = InetAddress.getByAddress(ipBytes);
routingNode.port = (((((short)portBytes[1]) << 8) & 0xFF00) + (((short)portBytes[0]) & 0x00FF));
} catch (UnknownHostException e) {
e.printStackTrace();
}
send(routingNode);
}
而且解碼串碼
private static String decodeString(ByteBuffer byteBuffer) {
try {
StringBuilder buffer = new StringBuilder();
int type = byteBuffer.get();
buffer.append((char) type);
do {
byte a = byteBuffer.get();
if (a == SEPARATOR) {
break;
} else {
buffer.append((char) a);
}
} while (true);
int length = Integer.parseInt(buffer.toString());
byte[] bytes = new byte[length];
byteBuffer.get(bytes);
String value = new String(bytes, "UTF-8");
logger.debug(value);
return value;
} catch (Exception e) {
logger.error("", e);
}
return "";
}
任何問題嗎?
PS: send()函數運行良好。
我更新瞭解碼字符串 –
我看不出有什麼關係。它甚至沒有在你的代碼中調用,也沒有解決我所說的任何事情。代碼中的可識別問題是bdecoding(字符串與字節緩衝區),字節序轉換和位操作。 – the8472