Sockets 读取连续数据时的Inputstream读取问题
当数据连续发送时,从inputstream读取时,我会得到不同的int值。当数据在几毫秒后发送时,返回的int值总是相同的 我使用套接字在两台android设备之间使用WiFi Direct进行通信。我每次写入150字节的数据,在接收端,数据被读取到150字节的字节数组中。但当发送连续数据时,返回的int有时不是150,而大多数情况下是150Sockets 读取连续数据时的Inputstream读取问题,sockets,inputstream,Sockets,Inputstream,当数据连续发送时,从inputstream读取时,我会得到不同的int值。当数据在几毫秒后发送时,返回的int值总是相同的 我使用套接字在两台android设备之间使用WiFi Direct进行通信。我每次写入150字节的数据,在接收端,数据被读取到150字节的字节数组中。但当发送连续数据时,返回的int有时不是150,而大多数情况下是150 inputStream = socket.getInputStream(); outputStream =
inputStream = socket.getInputStream();
outputStream = socket.getOutputStream();
byte[] buffer = new byte[150];
int bytes;
while (true) {
try {
bytes = inputStream.read(buffer);
if (bytes == -1) {
break;
}
} catch (IOException e) {
Log.e(TAG, "Exception during read", e);
}
I/SocketCreator: bytesData [47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 150
I/SocketCreator: bytesData [47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 98
I/SocketCreator: bytesData [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 150
I/SocketCreator: bytesData [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 150
I/SocketCreator: bytesData [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 150
I/SocketCreator: bytesData [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 150
I/SocketCreator: bytesData [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 52
I/SocketCreator: bytesData [47, 101, 118, 101, 110, 116, 0, 0, 44, 115, 0, 0, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
I/SocketCreator: bytes 150
所以我想知道int值是如何确定的?流,特别是套接字,不承诺任何特定的读取大小。没有消息。您必须使用
bytes
来确定接收了多少字节,并处理您发现的任何可能的分块
通常,应该使用更高级别的基本体。例如,
BinaryReader.ReadBytes
读取的是精确的字节数。我不知道在您的特定平台上使用什么类。流,特别是套接字,不承诺任何特定的读取大小。没有消息。您必须使用bytes
来确定接收了多少字节,并处理您发现的任何可能的分块
通常,应该使用更高级别的基本体。例如,
BinaryReader.ReadBytes
读取的是精确的字节数。我不知道在您的特定平台上使用什么类。之所以会这样,是因为没有任何东西表明它不可能发生。如果每次都要填充缓冲区,请使用DataInputStream.readFully()
。您好,我将尝试此方法。你能告诉我如何知道关闭插座的数据的结尾吗?当使用read时,我可以将int设为-1来关闭socket您考虑过了吗?它发生是因为没有任何东西表明它不可能发生。如果每次都要填充缓冲区,请使用DataInputStream.readFully()
。您好,我将尝试此方法。你能告诉我如何知道关闭插座的数据的结尾吗?当使用read时,我可以将int设置为-1来关闭socket您考虑过了吗?谢谢。因此,基本上使用上述方法,我们无法确保每次都会读取固定数量的数据。我说得对吗?我只是想知道这一点。没错,你需要一个循环或我推荐的帮助函数。谢谢。因此,基本上使用上述方法,我们无法确保每次都会读取固定数量的数据。我说得对吗?我只是想知道这一点。没错,你需要一个循环或一个助手函数,就像我推荐的那样。