WebSocket发送消息,大于126字节和大于65535字节的处理
网上搜了一下WebSocket的合包函数,发现不能直接使用。查了很多资料,终于弄出来了,大于65535字节的没有测试,但是小于65535的测试通过
下面是C#代码,其他代码根据此代码修改即可
public static byte[] PackData(string message) {
byte[] contentBytes = null;
byte[] temp = Encoding.UTF8.GetBytes(message);
LogWrite("内容长度:" + temp.Length);
if (temp.Length < 126) {
contentBytes = new byte[temp.Length + 2];
contentBytes[0] = 0x81;
contentBytes[1] = (byte)temp.Length;
Array.Copy(temp, 0, contentBytes, 2, temp.Length);
} else if (temp.Length < 0xFFFF) {
contentBytes = new byte[temp.Length + 4];
contentBytes[0] = 0x81;
contentBytes[1] = 126;
contentBytes[2] = (byte)(temp.Length >>8);
contentBytes[3] = (byte)(temp.Length & 0xFF);
Array.Copy(temp, 0, contentBytes, 4, temp.Length);
} else {
contentBytes = new byte[temp.Length + 10];
contentBytes[0] = 0x81;
contentBytes[1] = 127;
contentBytes[2] = 0;
contentBytes[3] = 0;
contentBytes[4] = 0;
contentBytes[5] = 0;
contentBytes[6] = (byte)(temp.Length >>24);
contentBytes[7] = (byte)(temp.Length >>16);
contentBytes[8] = (byte)(temp.Length >>8);
contentBytes[9] = (byte)(temp.Length & 0xFF);
Array.Copy(temp, 0, contentBytes, 10, temp.Length);
}
return contentBytes;
}
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