public static CommDataBlock createHelloBlock()
{
var bytes = new byte[] { 0x01, 0x05, 0x04 };
var block = new CommDataBlock()
{
content_bytes = bytes
};
return(block);
}
public static CommDataBlock createEndBlock(uint task_id)
{
var bytes = new byte[7];
bytes[0] = 0x01;
bytes[5] = 0x07;
bytes[6] = 0x04;
var block = new CommDataBlock()
{
content_bytes = bytes
};
block.setTaskId(task_id);
return(block);
}
public static CommDataBlock createAckBlock(uint task_id, uint block_id)
{
var bytes = new byte[11];
bytes[0] = 0x01;
bytes[9] = 0x06;
bytes[10] = 0x04;
var block = new CommDataBlock()
{
content_bytes = bytes
};
block.setTaskId(task_id);
block.setBlockId(block_id);
return(block);
}
public static void sendData(string data_content)
{
try
{
if (data_content.isNull())
{
return;
}
if (sending_data == null)
{
sending_data = new List <CommDataBlock>();
}
var dc = new CommDataContent(data_content);
foreach (var db in dc.data_blocks)
{
sending_data.Add(db.Value);
}
sending_data.Add(CommDataBlock.createEndBlock(dc.task_id));
}
catch { }
}
public static CommDataBlock createDataBlock(uint task_id, uint block_id, byte[] data)
{
if (data == null || data.Length <= 0)
{
return(null);
}
var bytes = new byte[data.Length + 12];
bytes[0] = 0x01;
bytes[9] = 0x02;
Array.Copy(data, 0, bytes, 10, data.Length);
bytes[bytes.Length - 2] = 0x03;
bytes[bytes.Length - 1] = 0x04;
var block = new CommDataBlock()
{
content_bytes = bytes
};
block.setTaskId(task_id);
block.setBlockId(block_id);
return(block);
}
public static bool checkConnection()
{
try
{
if (sending_data == null)
{
sending_data = new List <CommDataBlock>();
}
sending_data.Add(CommDataBlock.createHelloBlock());
var check = 0;
ack_status[0] = false;
while (check < 60)
{
Thread.Sleep(50);
check++;
if (ack_status.ContainsKey(0) && ack_status[0])
{
return(true);
}
}
}
catch { }
return(false);
}
private static void processReceivedData(byte[] data)
{
try
{
OnDataEndPointReached?.Invoke("", data);
var start_index = -1;
for (int i = data.Length - 2; i >= 0; i--)
{
if (data[i] == 0x01)
{
start_index = i;
break;
}
}
byte[] buffer;
if (start_index >= 0)
{
buffer = new byte[data.Length - start_index];
Array.Copy(data, start_index, buffer, 0, buffer.Length);
}
else
{
buffer = new byte[data.Length + 1];
buffer[0] = 0x01;
Array.Copy(data, 0, buffer, 1, data.Length);
}
var db = new CommDataBlock()
{
content_bytes = buffer
};
if (db.isAvailableHello())
{
OnDataBlockReceived?.Invoke("", db);
sending_acks.Add(CommDataBlock.createAckBlock(0, 0));
}
else if (db.isAvailableEnd()) //传输结束, 上报全部收取内容
{
OnDataBlockReceived?.Invoke("", db);
var task_id = db.getTaskId();
if (current_ack_mode)
{
sending_acks.Add(CommDataBlock.createAckBlock(task_id, 0));
}
raiseTask(task_id);
}
else if (db.isAvailableAck()) //收到确认包
{
OnDataBlockReceived?.Invoke("", db);
ack_status[db.getTaskId()] = true;
}
else if (db.isAvailableData()) //收到数据包
{
OnDataBlockReceived?.Invoke("", db);
received_blocks.Add(db);
if (db.content_bytes.Length < CommDataContent.DATA_BLOCK_SIZE)
{//在收到的数据包长度小于最大长度值时, 已可以确认收到了全部的内容, 直接调起当前任务
raiseTask(db.getTaskId());
}
if (current_ack_mode)
{
sending_acks.Add(CommDataBlock.createAckBlock(db.getTaskId(), db.getBlockId()));
}
}
}
catch { }
}