GSM MODEM发PUSH/MMS 的具体实现.

GSMMODEM发PUSH/MMS的原理请搜索网上的很多文章.这里只提供实现代码.我在原来发SMS的PDULib中加了

两个组装PUSH和MMS通知的方法.然后直接利用发SMS的方法发出去.代码都是调用通过的.不过我用SE的GPRS卡插在本本上调用,无论是通过超级终端直接发AT指令还是用程序都不行,好象最后的结束符26(ctrl+z)发不出去.但用MOTO的手机连接本本,无论超级终端还是程序都很顺利.

项目文件在:http://dl2.youkuaiyun.com/down4/20070712/12214323168.rar

连结串口的JustInIO包文件中定义了CommPort类,PUDLib文件中定义了PDUdecoding类,这两个文件搜索一下可以找到N个下载地址.篇幅原因我不贴了.只把在PDUdecoding中加的两个方法(另有两个辅助方法)贴上来:

private static string getUTF8Text(string str)
{
byte[] buf = Encoding.UTF8.GetBytes(str);
StringBuilder sb = new StringBuilder(buf.Length * 2);
for (int i = 0; i < buf.Length; i++)
{
sb.Append(buf[i].ToString("X2"));
}
return sb.ToString();

}
private static string getAsciiText(string str)
{
byte[] buf = Encoding.ASCII.GetBytes(str);
StringBuilder sb = new StringBuilder(buf.Length * 2);
for (int i = 0; i < buf.Length; i++)
{
sb.Append(buf[i].ToString("X2"));
}
return sb.ToString();

}
private string uintToString(int n)
{
byte[] buf = new byte[8];
int l = 0;
while (n >= 128)
{
byte b = (byte)(n & 0x7F);
n = n >> 7;
buf[l++] = b;
}
buf[l++] = (byte)n;
StringBuilder sb = new StringBuilder();
byte[] retBys = new byte[l];
for (int i = 0; i < l; ++i)
{
retBys[i] = (byte)(buf[l - i - 1] | 0x80);
}
retBys[l - 1] &= 0x7F;
for (int i = 0; i < l; i++)
{
sb.Append(retBys[i].ToString("X2"));
}
return sb.ToString();

}

发送PUSH和MMS通知的DECODE方法:

public string smsEncodePushMessage(string strNumber, string strTitle, string strURL)
{

string[] content = getPushContents(strTitle, strURL);
StringBuilder sb = new StringBuilder();
nLength = "";
for (int i = 00; i < content.Length; i++)
{
string s = String.Format("0051000D91{0}00F5A7{1}{2}", smsDecodedNumber(strNumber), (content[i].Length / 2).ToString("X2"), content[i]);
sb.Append(s);
int len = (s.Length / 2) - 1;//10进制
nLength += len.ToString();
if (i != content.Length - 1)
{
sb.Append(";");
nLength += ";";
}
}
return sb.ToString();
}

public string smsEncodeMMSMessage(string strNumber, string sendNumber, string strTitle, string strURL)
{
string[] content = getMMSContents(sendNumber, strTitle, strURL);
StringBuilder sb = new StringBuilder();
nLength = "";
for (int i = 00; i < content.Length; i++)
{
string s = String.Format("0051000D91{0}00F5A7{1}{2}", smsDecodedNumber(strNumber), (content[i].Length / 2).ToString("X2"), content[i]);
sb.Append(s);
int len = (s.Length / 2) - 1;//10进制
nLength += len.ToString();
if (i != content.Length - 1)
{
sb.Append(";");
nLength += ";";
}
}
return sb.ToString();

}

private string[] getPushContents(string title, string url)
{

string singleHead = "0605040B840000";
string MoreHead = "0B05040B840000000301";

string pud = "01060403AE81EA";
string pushUrlBegin = "02056A0045C6080B03";
string pushTitleBegin = "000103";
string pushEnd = "000101";

StringBuilder content = new StringBuilder();
content.Append(pud);
content.Append(pushUrlBegin);
content.Append(getAsciiText(url));
content.Append(pushTitleBegin);
content.Append(getUTF8Text(title));
content.Append(pushEnd);

string contentStr = content.ToString();

if ((contentStr.Length + singleHead.Length) < 140 * 2)
{
string[] messages = new string[1];
messages[0] = singleHead + contentStr;
return messages;
}
else
{
int packSize = 140 * 2 - MoreHead.Length - 2 * 2;//总包数加当前包数两个字节
int packCount = (contentStr.Length / packSize) + (contentStr.Length % packSize == 0 ? 0 : 1);
string[] messages = new string[packCount];
for (int i = 0; i < packCount; i++)
{
StringBuilder buf = new StringBuilder();
buf.Append(MoreHead);
buf.Append(packCount.ToString("X2"));
buf.Append((i + 1).ToString("X2"));
if (i == (packCount - 1))
buf.Append(contentStr.Substring(i * packSize));
else
buf.Append(contentStr.Substring(i * packSize, packSize));
messages[i] = buf.ToString();
}
return messages;
}
}
private string[] getMMSContents(string sendNumber,string title, string url)
{

string singleHead = "0605040B840000";
string MoreHead = "0B05040B840000000301";

title = getUTF8Text(title);
url = getAsciiText(url);

StringBuilder content = new StringBuilder();

content.Append("25") //Transaction ID
.Append("0622") //type,header-len
.Append(getAsciiText("application/vnd.wap.mms-message"))
.Append("AF84") //X-Wap-Application-ID type=2F (+80),x-wap-application:mms.ua=04 (+80)
.Append("8C82") //Message Type :m-notification.ind
.Append("98"); //X-MMS-Transaction-Id
TimeSpan ts = DateTime.Now - new DateTime(1970, 1, 1);
int x = (int)(ts.TotalMilliseconds / 1000);
content.Append(getAsciiText(x.ToString()))
.Append("00")
.Append("8D90") //version 1.0
.Append("89"); //From
string from = getAsciiText(sendNumber);
int fromLen = from.Length / 2 + 2;
string strFromLen = fromLen.ToString("X2");
content.Append(strFromLen)
.Append("80") //from begin
.Append(from)
.Append("00")
.Append("96"); //subject
int subLen = title.Length / 2 + 2; //EA,00编码和结束符
content.Append(subLen.ToString("X2"))
.Append("EA")
.Append(title)
.Append("00");
content.Append("8A80"); //Message-Class:Personal
content.Append("8E"); //Message-size
int msgSize = 12345;
string strMsgSize = msgSize.ToString("X4");
int sizeLen = strMsgSize.Length / 2;
content.Append(sizeLen.ToString("X2"))
.Append(strMsgSize)
.Append("88") //有效期
.Append("058103093A80"); //总长度5,相对格式.秒数长度3,093A80为604800秒,一周.
content.Append("83") //X-MMS-Content-Location
.Append(url)
.Append("00");
string contentStr = content.ToString();
if ((contentStr.Length + singleHead.Length) < 140 * 2)
{
string[] messages = new string[1];
messages[0] = singleHead + contentStr;
return messages;
}
else
{
int packSize = 140 * 2 - MoreHead.Length - 2 * 2;//总包数加当前包数两个字节
int packCount = (contentStr.Length / packSize) + (contentStr.Length % packSize == 0 ? 0 : 1);
string[] messages = new string[packCount];
for (int i = 0; i < packCount; i++)
{
StringBuilder buf = new StringBuilder();
buf.Append(MoreHead);
buf.Append(packCount.ToString("X2"));
buf.Append((i + 1).ToString("X2"));
if (i == (packCount - 1))
buf.Append(contentStr.Substring(i * packSize));
else
buf.Append(contentStr.Substring(i * packSize, packSize));
messages[i] = buf.ToString();
}
return messages;
}

注意上面两个私有支持方法因为支持分包所以都返回了字符串数组.两个公开的接口方法对返回的数组进行了重组装.这样在发送时要根据多包的特点多次发送.有了这两个方法.按正常发送SMS的方法就可以发送了:

连接COM口的方法:

private void connect_Click(object sender, EventArgs e)
{
if (this.InitCom("COM7", 9600))
{
this.connect.Enabled = false;
ss_port.Write(Encoding.ASCII.GetBytes("AT+CSCA?/r"));//获取手机短信中心号
bool flag = false;
for (int i = 0; i < retryCount; i++)
{
Thread.Sleep(retryTimeOut);
string readBuffer = Encoding.ASCII.GetString(ss_port.Read(128));
this.log.AppendText(readBuffer + "/r/n");
int start = readBuffer.IndexOf("86");
if (start != -1)
{
this.smsCenter.Text = readBuffer.Substring(start, 13);
flag = true;
break;
}
}
if (flag)
{
ss_port.Write(Encoding.ASCII.GetBytes("AT+CMGF=0/r"));
for (int i = 0; i < retryCount; i++)
{
Thread.Sleep(retryTimeOut);
string readBuffer = Encoding.ASCII.GetString(ss_port.Read(128));
this.log.AppendText(readBuffer + "/r/n");
if (readBuffer.IndexOf("OK") != -1)
{
this.log.AppendText("CMGF:"+readBuffer);
break;
}

}
}

//以下为SE的GC75 GPRS必须加的指令,此卡默认CFUN=0,无论Text还是Pdu都不能发.
ss_port.Write(Encoding.ASCII.GetBytes("AT+CFUN=1/r"));
for (int i = 0; i < retryCount; i++)
{
Thread.Sleep(retryTimeOut);
string readBuffer = Encoding.ASCII.GetString(ss_port.Read(128));
this.log.AppendText(readBuffer + "/r/n");
if (readBuffer.IndexOf("OK") != -1)
{
this.log.AppendText("CFUN:" + readBuffer);
break;
}

}
}
}

发送,根据选择框MODE控制选择的结果发送SMS/PUSH/MMS通知:

private void sendSMS_Click(object sender, EventArgs e)
{

PDUdecoding pud = new PDUdecoding();
string decodedSMS = "";

if (this.mode.SelectedIndex == 0)
{
decodedSMS = pud.smsDecodedsms(this.smsCenter.Text, this.destination.Text, this.content.Text);
}
else if (this.mode.SelectedIndex == 1)
{
decodedSMS = pud.smsEncodePushMessage(this.destination.Text, this.content.Text, this.pushurl.Text.Replace("http://", ""));
}
else if (this.mode.SelectedIndex == 2)
{
decodedSMS = pud.smsEncodeMMSMessage(this.destination.Text, "8888", this.content.Text, this.pushurl.Text);
}
else if (this.mode.SelectedIndex == 3)
{
decodedSMS = pud.smsEncodeBookMarkMessage(this.destination.Text, this.content.Text, this.pushurl.Text);
}
string[] contents = decodedSMS.Split(';');
string[] nLens = pud.nLength.Split(';');
for (int x = 0; x < contents.Length; x++)
{
byte[] buf = Encoding.ASCII.GetBytes(String.Format("AT+CMGS={0}/r", nLens[x]));
Console.WriteLine(decodedSMS);
ss_port.Write(buf);
bool isSucc = false;
string readBuffer = "";
for (int i = 0; i < retryCount; i++)
{
Thread.Sleep(retryTimeOut);
readBuffer += Encoding.ASCII.GetString(ss_port.Read(128));
this.log.AppendText(readBuffer + "/r/n");
if (readBuffer.Length > 0 && readBuffer.EndsWith("> "))
{
isSucc = true;
break;
}

}
if (!isSucc)
{
MessageBox.Show("send cmgs ERROR!");
return;

}
isSucc = false;
byte[] sendbyte = Encoding.ASCII.GetBytes(contents[x]);

ss_port.Write(sendbyte);
ss_port.Write(new byte[] { 0x1A });
readBuffer = "";
int mark = 0;
//因为GC75卡响应内容太多,且分为多行,所以为了通用彩用mark标记响应
//内容中有CMGS和OK的内容.
for (int i = 0; i < retryCount; i++)
{
Thread.Sleep(retryTimeOut);
readBuffer = Encoding.ASCII.GetString(ss_port.Read(128));
this.log.AppendText(readBuffer + "/r/n");
if (readBuffer.IndexOf("CMGS:") != -1) mark++;

if (readBuffer.IndexOf("OK") != -1) mark++;
if(mark == 2)
{
isSucc = true;
break;
}
}
if (!isSucc)
{
MessageBox.Show("ERROR");
return;
}
}
MessageBox.Show("OK");

}