0 q+ [/ K1 n7 q( N' H& e class Ping : I8 b7 i8 G* n) h
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//声明几个常量 $ O5 f q- s9 _
* X5 F& a# w$ H1 C" Z7 w% b; \& t2 i const int SOCKET_ERROR = -1; $ L6 M8 q+ k& g , V* ]& \5 ?+ f) v const int ICMP_ECHO = 8; 6 h' c2 D: L. r. O& M
$ l8 J* }" r& Y- S" A" c' ~ /// <summary> 2 L; e8 n$ Q( F4 |, o% H( D: d/ v & h& T {/ C, M1 w2 v, X /// 这里取得Hostname参数 ( a5 E" a. J9 t/ D( H$ X
2 s2 n2 r9 c1 u. O. I! z q: @ /// </summary> 2 Q8 q8 T- i3 m+ L4 V8 M ~ * X! F Y! {1 u. `5 r
public static void Main(string[] argv) 3 ^4 P- G( l0 d5 a
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{ & I$ q4 o) L* f. S4 \3 d/ ^" i/ ~
/ z" ]* N( S9 p. z$ L/ h1 \ if(argv.Length==0) 1 d6 j! j' r5 C: _' D ( b& ~4 V/ p& f# F7 Y3 T { ( t" V2 [, {& [" e/ r
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//If user did not enter any Parameter inform him & G* Y) S1 l' B9 }6 \* T& M0 d, H
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Console.WriteLine("Usageing <hostname> /r") ; " ]% o& ]6 S" o3 g* V9 V3 C . ^# ~2 Y4 R# d z( [
Console.WriteLine("<hostname> The name of the Host who you want to ping"); # ^: [" ~" u+ y3 R& b ! M; f1 k" p* x/ x0 K# \
Console.WriteLine("/r Ping the host continuously") ; " m) G. @2 C) a+ `
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else if(argv.Length==1) ( L# w1 ]8 N9 `% g- u/ r9 t
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//Just the hostname provided by the user - [: j& j1 \. n2 c
Q. Z( w6 ]+ @5 ^: |7 N //call the method "ingHost" and pass the HostName as a parameter - ~4 Q& o6 _) U4 \ " u5 N( x% e( y# x9 ^3 x5 A
PingHost(argv[0]) ; - }# Y5 O, O' H1 Y3 D) J
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else if(argv.Length==2) " B6 W, U3 d! G! B 1 M4 w) c* x5 l! J$ R { 5 ~' Y5 u5 D& t* ]. \ 1 u5 K Z# f( R1 v0 ~$ T
//the user provided the hostname and the switch d# |! J3 ~/ N ( e; P9 n+ p9 v! ]2 a
if(argv[1]=="/r") ( C0 _! H; J3 E/ ]) y7 M 3 a; i) l* ^9 f! @* ?, H
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//loop the ping program / V/ d( q* G& e# L% S
# L5 E2 Z& ~) p while(true) 2 [ [/ S+ Y! u8 i$ ~
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//call the method "ingHost" and pass the HostName as a parameter * t) ^; ]5 a% F3 d/ K! l6 H
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PingHost(argv[0]) ; $ v! T7 m- O; Z( n9 i' W, o+ o1 f
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else ( R1 Y" n4 Z' [1 { , U1 e, |% A6 `$ |
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//if the user provided some other switch , M+ G9 L4 q. p* {4 P$ U0 j2 H9 s % x) B- z2 H) h; H) ^: m# {3 n
PingHost(argv[0]) ; ) S! A4 V7 l2 w3 R" |) d
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} 6 h9 A; D2 h/ B, ^ i5 d1 t) t9 V& U
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else 6 z, A1 e7 C: S+ W4 @
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//Some error occurred 8 H, j9 v' ?- [; c; a + I3 o- \3 m" s4 \3 w Console.WriteLine("Error in Arguments") ; : G1 K- M, Z$ H; S& @ / o# K2 Z, A* U } . s/ ~4 O# a7 A, R! v" @ 4 S. m* f$ Q, H1 X: w
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. ~* d- Z; ^1 `- R3 W" j- o /// <summary> * H: A' t. |+ ^! h. z0 ^+ [+ G $ m4 i- U" Q/ c/ Y* b# |) B /// 主要的方法,用来取得IP, E: T2 d1 b2 B) A+ A
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/// 并计算响应时间 & l6 J" y7 W( h+ I* B) z/ P # C7 m5 Q2 Q6 L* @$ p! f, D /// </summary> % X+ d. A" k* s) M
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public static void PingHost(string host) + [. t: g# @% `1 m& p
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//Declare the IPHostEntry 8 y0 O: p+ y% m1 E5 l) \. O e
+ E5 z$ \. d! b8 T0 m IPHostEntry serverHE, fromHE; 4 ?, e$ v$ d F7 g: c8 I4 K) A1 P " c% Y b; N% ]+ A# B
int nBytes = 0; 6 b; \0 r* M9 t# }6 B
9 Q; L. I7 J9 e/ D6 A. z int dwStart = 0, dwStop = 0; 1 ^. I: G3 z) n" m( f3 v/ z
, @; O5 s( I* @1 K* t5 q //Initilize a Socket of the Type ICMP ( H4 M0 k) G) m6 h2 u% ~$ W) q
- y1 H6 I' k1 f; {7 K) N/ ~! ?# K
Socket socket = * s- f4 s# t& |9 j" B4 w # h# j" J2 l! K* t( M2 l2 v% E
new Socket(AddressFamily.AfINet, SocketType.SockRaw, ProtocolType.ProtICMP); & k0 R7 a3 ]1 W, E# z# P) v0 [7 t 8 _5 Q4 Q. _- ~ $ B2 I! y9 f7 o v7 s# I // Get the server endpoint 0 K- Q$ X9 ^' j! E- c2 f L0 c7 K 7 C: o3 \6 ?* e# r
try $ }, D# l/ n5 a3 r , @+ O: e6 f; t' V" i6 u6 V8 H { ' x7 q/ c$ a- Z% I4 c- r # T# |4 B* L* P9 M6 I2 V serverHE = DNS.GetHostByName(host); & Q1 Z* _+ G/ u% N7 C
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} 6 `2 F$ j8 a& O/ x H
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catch(Exception) ' b. @* r2 A/ w4 E0 ~
6 i4 f; _7 Y' K) @1 X( {' q( w; [ { 7 ]' q, T. C$ B ! o% \8 `( D }2 x Console.WriteLine("Host not found"); // fail ( P+ w7 G* a$ E3 p3 P
4 [ z$ u! N4 f W6 o return ; - r' @) t# u9 }4 x# v
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// Convert the server IP_EndPoint to an EndPoint , y. G/ q: W: g/ J3 k2 n % u2 o1 P" R. w1 _ IPEndPoint ipepServer = new IPEndPoint(serverHE.AddressList[0], 0); " `! \# a( ~: I: c* A2 b8 s 3 M* o* ]' `& s, M4 R" V/ \ t EndPoint epServer = (ipepServer); 3 v- r( W7 }! I1 g- I6 l- W
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// Set the receiving endpoint to the client machine : Z- C! i$ L6 l/ K5 O f
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fromHE = DNS.GetHostByName(DNS.GetHostName()); & M, n3 J- E% o6 L) Y7 K5 Q
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IPEndPoint ipEndPointFrom = new IPEndPoint(fromHE.AddressList[0], 0); 3 `' z' C+ M/ @- @: g
; Z# j& N* }( i" U5 m EndPoint EndPointFrom = (ipEndPointFrom); % \4 B' |" a. z" C * s2 U4 D5 h$ ]) { 1 q4 S% C( U' R& m+ m
int PacketSize = 0; 0 ?3 _& e- D0 Q( x. @ 2 n' L3 s. R- u. Z- o5 A
IcmpPacket packet = new IcmpPacket(); 4 o( u. M" U) y# H - m6 }6 L4 \7 H0 b- W8 s7 m
// Construct the packet to send ' B2 r# K+ u4 `& n& T* e# n % i7 R* w1 v& e5 z$ Z' J7 D
packet.Type = ICMP_ECHO; //8 . y6 l% x8 C% l4 C) C( \
: _) ?, S+ _& w3 E `; C packet.Identifier = UInt16.Parse("45"); ( I- f! A( V( r: h
9 C6 W# p) f7 C: R
packet.SequenceNumber = UInt16.Parse("0"); " J$ m5 U& @& @* Q' O) ]3 F3 Z7 f
- Y |& ?5 m$ v5 e int PingData = 32; // sizeof(IcmpPacket) - 8; : O9 Y) O9 I8 ~ u
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packet.Data = new Byte[PingData]; h- a4 w; D; ~$ r9 u' H
# a: m4 f; \! z& {' X# o. f& A+ } //Initilize the Packet.Data ; l: b D' w- V$ u4 m9 u & c9 t. O! g* y6 B+ S for (int i = 0; i < PingData; i++) ' u/ f& j5 d$ g. @3 Q ! o6 z) r) J. f { 6 e. c, P, x/ a" \6 J" p
* {& { }/ Z D/ U" o8 T packet.Data = (byte)'#'; 9 t! u* I# Q$ s+ j% F
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} : ?' J$ i' X# P% |/ ]5 [2 y+ |- g ' Z& y7 b9 U$ i8 x
) a- |* g. z Q. G8 V S& ]+ N. J //Variable to hold the total Packet size + }* F$ T( @- c2 k. t$ @
. F/ m) K7 U; `5 P, e6 N; f PacketSize = PingData + 8; ; E3 s' S1 M/ O3 I! Z7 I% _" H * i8 A4 v7 @% b* H Byte [] icmp_pkt_buffer = new Byte[ PacketSize ]; ' I3 _1 y6 z7 A& G. Q! t: Q
8 P1 \! @& K+ ?" j2 `% e
Int32 Index = 0; 9 Z9 R3 ?5 |- T. L6 @: ~ : b2 _* D& g; N/ e8 I //Call a Method Serialize which counts ' H o" A) Z5 r5 c; w0 W0 F2 A / B/ o, o; Y/ z //The total number of Bytes in the Packet $ x0 R' h# w2 o+ s* ^: ]
{6 s4 x7 S2 }3 {5 c: D' j, A Index = Serialize( ! ~5 @9 c6 N( J1 T( F1 U$ ~ ! @5 R) X% O- @
packet, 5 c- z6 X$ s, h7 s# [
) N; Y- {& `5 J# y6 H2 [
icmp_pkt_buffer, " N2 K0 R, H8 j7 x! I9 l, Z/ U/ S " F- Q: C' b0 F, V. w# e
PacketSize, 6 p r: i' {8 F* H 4 k- v# p' I/ S PingData ); " i$ @7 k) b& o9 {; N3 S* e % L' [! J, N6 r3 N* L( C; z5 K //Error in Packet Size & n& v! F7 l5 M7 T
# h3 k" J/ B. @8 c if( Index == -1 ) 4 t5 K, f9 U- U/ W8 Q; L }+ V: ^3 S# ?# C5 ]. y { & g6 l) Y; q ?4 R1 U6 ^ ( h/ d6 o0 L1 B Console.WriteLine("Error in Making Packet"); - O0 i& K( |- E- g4 {0 i
2 B* ?# d: S f/ y: E8 z* J return ; , c* Q1 V( r H+ l: { ( M8 i/ {! V! F" X# b5 U2 q7 w } * x3 i2 d/ c& W7 d * k/ q" P) E/ z+ I) B: |
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// now get this critter into a UInt16 array ( h6 F9 `4 N+ [9 E" \- H - _ c' H% g4 h h# U" I& m5 D$ D 1 `# {* i& T) o" p0 k. D
//Get the Half size of the Packet ( d9 j# P+ g5 z/ H% r: } ' v) A! O" T& \+ m% h) q
Double double_length = Convert.ToDouble(Index); , \$ n( B8 L7 I7 ~
3 w) w% A& X# n% Z$ `- Q6 K
Double dtemp = Math.Ceil( double_length / 2); - |( K8 D- k, b5 d9 y2 d ' J% h W% d- W) x' O( S# k int cksum_buffer_length = Convert.ToInt32(dtemp); ) d0 I3 d- V+ H, F
4 U- g! P) Q+ i8 P/ d //Create a Byte Array % L, G. O& K& X: r% @; N) e 7 Z5 X' o) h5 g" @3 |- W# a/ i UInt16 [] cksum_buffer = new UInt16[cksum_buffer_length]; m. B1 ?* H5 U7 C: ~ 5 y* X; W/ g) j5 t9 ^ q: ]" N& e4 y //Code to initialize the Uint16 array 3 r3 Z' _: M! Q) P
* i+ J% k" Z3 G
int icmp_header_buffer_index = 0; 3 _$ x8 S5 p$ N" G
, j! t/ S: U: O4 i for( int i = 0; i < cksum_buffer_length; i++ ) { ) F; T4 ]+ ]' h; \( ?
_- W$ y2 B) x* Y( O3 n
cksum_buffer = - f1 V3 Z8 E6 [* @7 n8 u
3 q# D7 u! L6 d* t$ l3 k: k
BitConverter.ToUInt16(icmp_pkt_buffer,icmp_header_buffer_index); ; ^) Q5 H5 ?4 H9 l- W/ ^ & j, T) a+ m* z L( i
icmp_header ' f$ W8 ~9 u' i% n I % G: D# a, @3 A" y. y1 P
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