/* +2w<V0V_
**SiteFileFetch.java -"EPU]q
*/ vdh[%T,&
package NetFox; V4&a+MJ@
import java.io.*; =zTpDL
import java.net.*; 6rM{r>
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public class SiteFileFetch extends Thread {
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SiteInfoBean siteInfoBean = null; //文件信息Bean u2OrH3E4E3
long[] nStartPos; //开始位置 26p_fKY
long[] nEndPos; //结束位置 y@SI )&D
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ehLn+tg
long nFileLength; //文件长度 < lUpvr
boolean bFirst = true; //是否第一次取文件 b2H-D!YO^
boolean bStop = false; //停止标志 X]D:vuB
File tmpFile; //文件下载的临时信息 a'g&1N0Rc
DataOutputStream output; //输出到文件的输出流 @;tM R|p
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) CzIs_/
public SiteFileFetch(SiteInfoBean bean) throws IOException Cj=_WWo
{ o;21|[z
siteInfoBean = bean; G#~U\QlG-
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); yg4#,4---b
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1\)C;c,
if(tmpFile.exists ()) Res4;C
{ Fkg%_v$
bFirst = false; `(/xj{"Fr}
read_nPos(); IBUFXzl
}
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else @yj~5Gf(j
{ nvA7eTO6C
nStartPos = new long[bean.getNSplitter()]; L
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nEndPos = new long[bean.getNSplitter()]; 2D a0*xn{
} [dXa,
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} do9~#F
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* \B(-
public void run() 6ma.FvSIM
{ `(DHa=s1
//获得文件长度 mM~&mAa+Z
//分割文件 JmeE}:5lpj
//实例FileSplitterFetch U5OFw+J
//启动FileSplitterFetch线程 #M<YNuE#"
//等待子线程返回 F'"-aB ~
try{ i(ZzE
if(bFirst) HCx0'|J
{ ~'|^|*}~Dj
nFileLength = getFileSize(); ysCK_
if(nFileLength == -1) 4l>U13~#
{ Z|fi$2k0!
System.err.println("File Length is not known!"); 4TyzD%pOw
} AAqfp/DC
else if(nFileLength == -2) B%`|W@v
{ FLZ9Rg
System.err.println("File is not access!"); s:cJF
} ?2R!n"m-d
else 76]Z~^Y
{ zl|+YjR
for(int i=0;i<nStartPos.length;i++) Qn~{TZz
{ $Ld-lQsL
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 2
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} hL&7D@
for(int i=0;i<nEndPos.length-1;i++) Vk*XiEfKm>
{ }{kn/m/
nEndPos = nStartPos[i+1]; :S}ZF$
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} /0!.u[t)~
nEndPos[nEndPos.length-1] = nFileLength; zqURnsJ
} ';}:*nZ//_
} 'n^?DPvD
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//启动子线程 l8:!{I?s=
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -x:7K\=$SX
for(int i=0;i<nStartPos.length;i++) e
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{ KS1udH^Zc
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }@/Ox
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), {U@"]{3Qx
nStartPos,nEndPos,i); K4H27SH
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); SL/'UoYm<
fileSplitterFetch.start(); _00}O+GLM4
} 2^"!p;WQ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0LYf0^P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -ik=P]?
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", bKsEXS
nEndPos = " + nFileLength); 4^k8|#c
// fileSplitterFetch[nPos.length-1].start(); D=Nt0y
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//等待子线程结束 &x=_n'
//int count = 0; XH0o8\.
//是否结束while循环
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boolean breakWhile = false; }'86hnW
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}eI9me@Aa
while(!bStop) C3N1t
{ U>00B|<GJ
write_nPos(); /?0|hi<_$
Utility.sleep(500); M,yxPHlN
breakWhile = true; =v!Z8zk=W
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for(int i=0;i<nStartPos.length;i++) DZLEx{cm
{ ?R4u>AHS@
if(!fileSplitterFetch.bDownOver) ,\1Rf.
{ @HnahD
breakWhile = false; osmCwM4O
break; '66nqJb*
} pHye8v4fvi
} Cs,Cb2[
if(breakWhile) _VM}]A
break; XbeT x
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//count++; pIug$Ke_%
//if(count>4) H;@0L}Nu+}
// siteStop(); *a0#PfS[
} aIr"!. 4
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System.err.println("文件下载结束!"); %KN2iNq
} %Wm)
catch(Exception e){e.printStackTrace ();} (Rp5g}b
} #7sxb
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//获得文件长度 1K)9fMr]
public long getFileSize() AAuwE&Gg
{ cVarvueS
int nFileLength = -1; O3dQno
try{ /UY'E<wBx
URL url = new URL(siteInfoBean.getSSiteURL()); BT^=p
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); V\Y,4&bI
httpConnection.setRequestProperty("User-Agent","NetFox"); 0S
}\ML
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int responseCode=httpConnection.getResponseCode(); MSp)Jc
if(responseCode>=400) F x$W3FIO]
{ YACx9K H
processErrorCode(responseCode); blP8"(U
return -2; //-2 represent access is error NXz/1ut%
} JDp=w,7LF
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String sHeader; $GQEdVSNo
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for(int i=1;;i++) ti]8_vP}*
{ x>Dix1b:.
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5p-vSWr!
//Utility.log(in.readLine()); +# !?+'A
sHeader=httpConnection.getHeaderFieldKey(i); usu{1&g
if(sHeader!=null) hY *^rY'
{ 6Bd:R}yZP7
if(sHeader.equals("Content-Length")) 7|[Dr@.S
{ *_Ih@f H
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ADP3Nic
break; <]#_&Na
} z,@R jaX
} VG$%Vs
else Tc/<b2\g
break; ycEp,V;[Z
} :9q|<[Y^
} AT2D+Hi=E
catch(IOException e){e.printStackTrace ();} xa
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catch(Exception e){e.printStackTrace ();} 1-<?EOYaE
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Utility.log(nFileLength); :;LaV
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return nFileLength; An,TunX
} .Rb1%1bdc
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//保存下载信息(文件指针位置) s%m?Yh3
private void write_nPos() M?n}{0E4
{ mM+^v[=
try{ .\)ek[?
output = new DataOutputStream(new FileOutputStream(tmpFile)); S3QX{5t\
output.writeInt(nStartPos.length); BHNJH
for(int i=0;i<nStartPos.length;i++) {n<1uh9~$8
{ MRK3Cey} %
// output.writeLong(nPos); OKj\>3
output.writeLong(fileSplitterFetch.nStartPos); *Ct
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output.writeLong(fileSplitterFetch.nEndPos); 6pZ/C<Y|W
} 6$csFW3R
output.close(); X&@>M}
} b=L|GV@$
catch(IOException e){e.printStackTrace ();} n^|7ycB'
catch(Exception e){e.printStackTrace ();} uhwCC
}
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//读取保存的下载信息(文件指针位置) )o&}i3~Q
private void read_nPos() [W dxMU
{ c.>OpsF
try{ S6_dmTV*
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 0nR_I^
int nCount = input.readInt(); <4;L&3
nStartPos = new long[nCount]; 78]( ZYJV
nEndPos = new long[nCount]; '(3|hh)Tl
for(int i=0;i<nStartPos.length;i++) fnFIw=d
{ 1=~ ##/at
nStartPos = input.readLong(); `YBHBTG'o!
nEndPos = input.readLong(); `#j;\
} PBwKR D[I
input.close(); nQfSQMg
} ytfr'sr/
catch(IOException e){e.printStackTrace ();} M=EV^Tw-=
catch(Exception e){e.printStackTrace ();} Of<Vr.m{R
} A2`Xh#o
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private void processErrorCode(int nErrorCode) ),-MrL8c%
{ _M- PF$
System.err.println("Error Code : " + nErrorCode); i*+N[#yp
} C}:_&^DQ
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//停止文件下载 o4aFgal1
public void siteStop() O tR
{ T{F
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bStop = true; T@r%~z
for(int i=0;i<nStartPos.length;i++) 5j5}c`:
fileSplitterFetch.splitterStop(); Y}r UVn
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} h]o{>
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} i| *r/
//负责部分文件的抓取 -TNb=2en(
**FileSplitterFetch.java !Bhs8eGr3
*/ |W|RX3D
package NetFox; ,mt=)Ac
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import java.io.*; su~J:~q
import java.net.*; v-B&"XGy:
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public class FileSplitterFetch extends Thread { 7x(z
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String sURL; //File URL L:UPS&)
long nStartPos; //File Snippet Start Position Pbakw81!~
long nEndPos; //File Snippet End Position K5\;'.9M
int nThreadID; //Thread's ID /)XN^Jwa;m
boolean bDownOver = false; //Downing is over n%ZOR1u)k#
boolean bStop = false; //Stop identical
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FileAccessI fileAccessI = null; //File Access interface %9T|"\
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException -W1Apd%>
{ ()(/9t
this.sURL = sURL; VCvFCyAz
this.nStartPos = nStart; #]s&[O43
this.nEndPos = nEnd; jd}-&DN
nThreadID = id; XchVsA
fileAccessI = new FileAccessI(sName,nStartPos);//定位 SbD B[O%
} Z$Vd8U;
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public void run() W7q!F
{ ""_%u'7t5I
while(nStartPos < nEndPos && !bStop) Z
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{ l9F]Lw
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try{ MtBoX*"
URL url = new URL(sURL); RJ$x{$r[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U^9#uK6GM
httpConnection.setRequestProperty("User-Agent","NetFox"); - ]U2G:
String sProperty = "bytes="+nStartPos+"-"; xn2f!\%p
httpConnection.setRequestProperty("RANGE",sProperty); l1"*
Utility.log(sProperty); [?VkwFD0
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InputStream input = httpConnection.getInputStream(); t ;bU#THM
//logResponseHead(httpConnection); f^@DuI
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byte[] b = new byte[1024]; k '-5&Q
int nRead; lQf38u||
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ~_|ZUb
{ crr#tad.
nStartPos += fileAccessI.write(b,0,nRead); .=/TT|eMS
//if(nThreadID == 1) >VB*Xt\C&
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ew|e66Tw$
} -zH` 9>J5|
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Utility.log("Thread " + nThreadID + " is over!"); &&`-A6`p
bDownOver = true; unAu8k^
//nPos = fileAccessI.write (b,0,nRead); 0GMov]W?i
} vQ1#Zgy
catch(Exception e){e.printStackTrace ();} >
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} V})b.\"F
} `fq# W#Pu
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//打印回应的头信息 Pfl8x
public void logResponseHead(HttpURLConnection con) ?m:,hI
{ 75*q^ui
for(int i=1;;i++) # 4;(^`?
{ 9=p/'d8
String header=con.getHeaderFieldKey(i); 0z`-fQfK
if(header!=null) V-w{~
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Y]:Ch (Q
Utility.log(header+" : "+con.getHeaderField(header)); |&AZ95v
else 9"b =W@
break; 9{XV=a v
} 6w4}4i
} [F}_Ime
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public void splitterStop() cxn*!TwDs
{ !9vq"J~hz"
bStop = true; C=<PYkt,L
} W&;,7T8@
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} 2rG$.cGN"
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/* &W$s-qf".
**FileAccess.java d3tr9B
*//文件访问(定位,写) T1g3`7C3
package NetFox; lkaWwjv_D
import java.io.*; cX4I+Mf
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public class FileAccessI implements Serializable{ 7~m[:Eg6[s
v)%0`%nSR
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 %>!$eCX
RandomAccessFile oSavedFile; R 9b0D>Lxt
long nPos;
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public FileAccessI() throws IOException (u-eL#@
{ ]lZg }7h
this("",0); l3HfaCP6:
} eR>|1s%^
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public FileAccessI(String sName,long nPos) throws IOException Ln"D .gpq
{ vMeB2r<
oSavedFile = new RandomAccessFile(sName,"rw"); ZFNg+H/k
this.nPos = nPos; u{%dm5
oSavedFile.seek(nPos); BY`vs+]XY
}
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public synchronized int write(byte[] b,int nStart,int nLen) Tga%-xr+
{ %ZM"c
int n = -1; 1}ws@hU
try{ -xL^UcG0
oSavedFile.write(b,nStart,nLen); |wGmu&fY
n = nLen; EClx+tz;`
} \x<i6&.
catch(IOException e) T*jQzcm~?
{ 6}>CPi#
e.printStackTrace (); )8*}-z
} \"1%>O*
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return n; eNu]K,rT
} c)4L3W-x=
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} DLD 5>
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/* ^5rB/y,
**SiteInfoBean.java _t?#
*/ ~'w]%rh!
package NetFox; fxknfgbg
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public class SiteInfoBean { kc/"
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private String sSiteURL; //Site's URL YT'olk
private String sFilePath; //Saved File's Path U<I]_]
private String sFileName; //Saved File's Name _f"KB=A_x
private int nSplitter; //Count of Splited Downloading File ?.^n,[2
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public SiteInfoBean() :pvB}RYD
{//nSplitter的缺省值为5 @ |D#lBm
//default value of nSplitter is 5 {JQCfs
this("","","",5); D-LQQ{!D5
} a g6[Nk
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) m,V"S(A
{ Q%x-BZb~
sSiteURL= sURL; HsKq/Oyk
sFilePath = sPath; "xAIK
sFileName = sName; \hI|I!sDWy
this.nSplitter = nSpiltter; 6G7+&g`
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} =HjC.h
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public String getSSiteURL() LjCUkbzQF
{ 7ygz52
return sSiteURL; ^~^=$fz
} h?p!uQ
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public void setSSiteURL(String value) kQD~v+u{`
{ z&yVU<;
sSiteURL = value; ('Ha$O72
} *#83U?
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public String getSFilePath() VUC_|=?dL
{ /sr.MT
return sFilePath; yVWt%o/
} cCs@[D#O1
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public void setSFilePath(String value) (dwb{+HW
{ RQU-]qQ8BM
sFilePath = value; E+cx8(
} 8>`8p0I$+
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public String getSFileName() b9VI(s>
{ ;?C`Jagx
return sFileName; |lN=q44I
} L@.Trso
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public void setSFileName(String value) ;@qQ^!g2
{ iUq_vQ@}}
sFileName = value; @H}{?-XyA
} 5Gm8U"UR
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public int getNSplitter() pnUL+UYeM
{ PZj}]d `
return nSplitter; ']N\y6=fn9
} 0E9 lv"3o
,/Q`gRBh"
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public void setNSplitter(int nCount) <5zr|BTF]F
{ Zt}b}Bz
nSplitter = nCount; P| ftEF
} &FG0v<f5Pv
} 9Y?``QBN
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/* .
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**Utility.java 2 ,krVb?<
*/ ?*6Q;.f<
package NetFox; ni6zo~+W]
}(oWXwFb&W
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public class Utility { \H
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8 %p+:6kP5
),H1z`c&I
public Utility() E:;MI{;7
{ 5=V 29
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} Y=,9 M
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//线程睡眠 b>]UNf"-
public static void sleep(int nSecond) tMXNi\Bj
{ ?;A\>sP
try{ GK1P7Qy?V
Thread.sleep(nSecond); =i6k[ rg
} OS1f}<
catch(Exception e) _-2;!L#/
{ j+e
s
e.printStackTrace (); NTSIClm}U
} ExF6y#Y G<
} h@J3+u<
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//日志 BU|)lU5)z
public static void log(String sMsg) UG4I@@=
{
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System.err.println(sMsg); '<'5BeU
} b5?k gY
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public static void log(int sMsg) x4,[5N"}YK
{ \+&)9 !K
System.err.println(sMsg); Pa"Kk9!o36
} Yp\Y]pym
} ?1r<`o3l\
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/* f1XM_
**TestMethod.java )u0/s'
*/ 4UND;I&
package NetFox; [;UI8Stw
GNSh`Tm =#
2`A[<