public override PDU AETitle(PDU pdu)
{
AETsBtoS(pdu);
if (uced == pced && ucing == pcing)
{
/*构造回复AC
* 1实例化新的AC类（保存配置信息）
* 2调用AC write，传入相应参数ACpdu，返回ACpdu
* 3调用AC.r
*
*/
AAssociateAC ACpdu = new AAssociateAC();
ACpdu.uCalledAET = pdu.uCalledAET;
ACpdu.uCallingAET = pdu.uCallingAET;
ACpdu.VItems = pdu.VItems;
ACpdu = ACpdu.writeAC(ACpdu);
pdu.r = ACpdu.r;
pdu.log = "DICOMSCU << A - ASSOCIATE - AC PDU" + "\r\n";
}
else if (uced != pced)
{
pdu.r = HexStringToByteArray("03 00 0000000A 00 02 03 07");
pdu.log = "DICOMSCU << A - ASSOCIATE - RJ PDU" + "\r\n";
}
else if (ucing != pcing)
{
pdu.r = HexStringToByteArray("03 00 0000000A 00 02 03 03");
pdu.log = "DICOMSCU << A - ASSOCIATE - RJ PDU" + "\r\n";
}
return(pdu);
}
//AETs字节数组转字符串
public void AETsBtoS(PDU pdu)
{
uced = Encoding.Default.GetString(pdu.uCalledAET).TrimEnd();
ucing = Encoding.Default.GetString(pdu.uCallingAET).TrimEnd();
pced = Encoding.Default.GetString(pdu.pCalledAET).TrimEnd();
pcing = Encoding.Default.GetString(pdu.pCallingAET).TrimEnd();
}
//编码pdu为string
public string PDUString(PDU pdu)
{
string t = BitConverter.ToString(pdu.PDUType);//byte数组转为16进制string
string pdus;
AETsBtoS(pdu);
if (t == "01" || t == "02")
{
ContextDataSet cd = new ContextDataSet(pdu);
cd.AppItem();
cd.PreItem(pdu.PDUType.ToString() == "02");
cd.UInfoItem();
pdu.context = cd.decodeContxt();
pdus = "\nPDUType:" + t + "\tPDULength:" + pdu.PDULength.ToString("x2") + "\tVersion:" + BitConverter.ToString(ProtocalVersion) + "\nCalledTitle:" + uced + "\nCallingTitle:" + ucing + "\nContext:\n" + pdu.context;
}
else
{
pdus = "\nPDUType:" + t + "\tPDULength:" + pdu.PDULength.ToString("x2") + "\tResult:" + pdu.Result.ToString("x2") + "\tSource:" + pdu.Source.ToString("x2") + "\tReason:" + pdu.Reason.ToString("x2");
}
pdus = pdus.Replace("-", "");
return(pdus);
}
//处理接收的客户端数据
public void ReceiveFromClient()
{
/*
* 1 循环读取:先读取一位，判断类型，使用不同方法解码（RQ/AC 和 RJ/RL）
* 2 安位循环读取，大于PDUlength或AET时break
* 3 根据不同类型构造并返回结果
* 4 循环接收客户端pdu
*/
while (true)
{
try
{
PDU pdu = null; //实例化相应PDU解析类，存储解析并pdu内容
f = true; //循环读取第一位标志
//循环读第一位，判断类型，符合类型跳出循环，解析剩余内容
while (f)
{
try
{
t = br.ReadByte();
type = t.ToString("x2");
switch (type)
{
case "01": { f = false; pdu = new AAssociateRQ(); break; } //修改标志，跳出循环
case "02": { f = false; pdu = new AAssociateAC(); break; } //修改标志，跳出循环
case "03": { f = false; pdu = new AAssociateRJ(); break; } //修改标志，跳出循环
case "05": { f = false; pdu = new AReleaseRQ(); break; } //修改标志，跳出循环
case "06": { f = false; pdu = new AReleaseRP(); break; } //修改标志，跳出循环
default: break;
}
}
catch { break; }
}
//保存pdu类型，并打印
pdu.PDUType[0] = t;
rtbLog.AppendText(pdu.Log());
//读取PDU长度
br.ReadByte(); //跳过保留位
uint length = 0;
for (int i = 0; i < 4; i++) //长度占4位
{
length *= 256; //左移8位
length += br.ReadByte();
}
pdu.PDULength = length;
//读取剩余PDU内容
byte[] pdu1 = br.ReadBytes((int)length);
//分解剩余头部
pdu.PDUSplit(pdu1);
rtbLog.AppendText("\nRecieved RQ PDU:" + pdu.PDUString(pdu) + "\n\n");
//比较AET
pdu.pCalledAET = CalledTitle;
pdu.pCallingAET = CallingTitle;
pdu.AETitle(pdu);
//发送结果
rtbLog.AppendText("\nSent PDU:\n");
foreach (byte i1 in pdu.r)
{
rtbLog.AppendText(i1.ToString("x2"));
}
rtbLog.AppendText("\n\n" + pdu.log);
bw.Write(pdu.r);
bw.Flush();
//释放关联,关闭网络流,修改网络流状态标志，跳出循环
if (type == "05")
{
br.Close(); bw.Close(); nets = false; break;
}
//重置循环解析type标志
f = true;
}
catch { break; }
}
}
public override PDU AETitle(PDU pdu1)
{
return(pdu1);
}
//比较AETitle public abstract PDU AETitle(PDU pdu1);
public override PDU AETitle(PDU pdu1)
{
r = HexStringToByteArray("06 00 0000000A 00 00 00 00");
log = "DICOMSCU >> A - RELEASE - RP PDU" + "\r\n";
return(pdu1);
}
public override PDU AETitle(PDU pdu1)
{
throw new NotImplementedException();
}
public ContextDataSet(PDU pdu)
{
this.pdu = pdu;
pdu.VItems = new List <Item>();
}
