, f6 H1 {# w' k5 ^' a5 ^8 P" W2 ` PING 是一个用来检测网络连接速度的工具,它会在本机和给出的远程主机名之间建立一个SOCKET 连接并向其发送一个ICMP协议格式的数据包,然后远程主机作出响应,发回一个数据包,通过计算发送到接收数据包的时间间隔,我们可以确定连接的速度。 9 G3 W+ R4 X i6 t + t( |5 k# _ a; H s. t ( X( d6 I E6 ?' |0 |+ P' L l ! z' l* K& l2 j7 ^% Y2 ^7 R 此程序可以使用于 asp+asp.net 虚拟主机,时代互联(<a href="http://www.now.net.cn" target="_blank" >www.now.net.cn</A>)的虚拟主机可以支持 。虚拟主机的其他的配置问题,可以见:<a href="http://www.now.net.cn/host" target="_blank" >www.now.net.cn/host</A> $ _: T; g, N4 t! x/ D 主机+域名+邮箱 的优惠套餐,可以见 : <a href="http://www.now.net.cn/special/host.net" target="_blank" >http://www.now.net.cn/special/host.net</A>9 ~0 Z) s; p, C/ h: c4 E
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+ y- [6 o* \" U. I7 O 使用方法 ping <hostname> [/r] * |6 `$ Z) h) i0 I ( [4 R% n4 H5 V: X
<hostname> 主机名 ) j9 ]# \+ \3 C C " t2 s7 x4 i% M3 r6 V) K$ P4 h
[/r] 可选属性,决定是否连续的 ping 远程主机。 6 E% ^8 G9 C7 u" R1 x- R
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- m$ a" j* M' @3 r' I' Y1 e 下面是代码: & U* C) a9 w1 G! _( A: B) N, b4 f
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///ping.cs ( f0 U, Q1 z5 \7 i
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namespace SaurabhPing ) f( U2 _: N- n9 t8 X1 }
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using System; % u/ b0 J+ U% D' C9 q / v2 J" T4 ]. W, n
using System.Net; 3 r; g5 M G1 G5 @, i `. `4 a C' b
' N% c3 ^: p2 T9 G. U using System.Net.Sockets; $ N% H* G: Q2 a8 i7 L1 l c 8 B& V) z& u* O: C, ?1 y /// <summary> ) G$ T- z) M3 q: S1 z/ X4 q9 y ! v3 G) `; O/ C; A
/// 主要的类:ping j2 y3 p# d) {3 V# ^$ u2 a
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/// </summary> ! c( s9 b0 T W: T0 b6 z/ q
+ x7 w R/ N" o4 L, S' g class Ping # S. q- x5 N! u# ^' x# M2 k 6 b: l- a, ~0 H8 l% B' a2 h- l! y
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//声明几个常量 5 K3 m" @% ~; E" m) e
, O8 g4 m4 w; X; N const int ICMP_ECHO = 8; / b2 f/ d7 J- J% t5 ]$ V ( f1 A+ k( e5 ^& h; Q# ?0 J, e4 [
/// <summary> . X/ E1 A+ l$ ^( A5 h6 T
' W2 w4 U4 b1 y" e) q3 T /// 这里取得Hostname参数 # k+ t" J. G/ n7 B9 y
' B6 w$ V! W. S0 g5 ~5 w /// </summary> & W! R/ w7 M9 V" Q& S . A: a/ R( N. _! a# j
public static void Main(string[] argv) * T/ @, F6 r- g& I2 V( T : J E1 [/ |+ Z& T0 b
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if(argv.Length==0) 0 n1 M# s/ d( r+ r8 b, y* @" q
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//If user did not enter any Parameter inform him - R# P8 C/ S! J+ g
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Console.WriteLine("Usageing <hostname> /r") ; 2 L- i% v; @7 b
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Console.WriteLine("<hostname> The name of the Host who you want to ping"); % K u; w* x# X* R : W* i, N0 V. }0 I& N& }
Console.WriteLine("/r Ping the host continuously") ; " U' _/ n8 V' N
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else if(argv.Length==1) $ v2 q) ?' P* }% k1 e ; P8 G; a$ O3 f' R) Q0 f5 ^ { & @# c+ F7 M( W; _
$ v1 I8 s' w; [' l- _3 F, |/ [ //Just the hostname provided by the user 3 w. D5 [/ L. ? \
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//call the method "ingHost" and pass the HostName as a parameter ' ^# N) ]7 ?3 ?; i, _1 R 2 _1 f6 U9 f* C' i+ i; }8 P1 c
PingHost(argv[0]) ; . R( y2 q9 H5 H, { e7 X) a! g( U! |3 f* B
} 7 I& A! S' `; V7 c$ c/ Y3 j 9 P; A; S# C9 I: m else if(argv.Length==2) 3 N6 T" J+ w% ^2 k$ E2 X4 x ! p) [3 w7 Q$ U A: D9 L
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//the user provided the hostname and the switch 0 k% i: d# E2 O) X" l3 f
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if(argv[1]=="/r") ! d; n* `( M1 p( X% o5 M
* ~* ~9 W- Z+ d5 K6 r; Y6 i& h { & z2 n. ~. W2 p6 b 2 v# b* d1 j u4 B. V) T" ? d3 b# I- H$ { //loop the ping program " A: H: B( R% N * Z5 j& e, _+ T8 t! J
while(true) 8 ]1 _$ g4 o+ d# }. s0 X- i3 }
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//call the method "ingHost" and pass the HostName as a parameter % T7 f E2 B; Q' T X4 `* F+ G
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PingHost(argv[0]) ; 0 O( Y* y% s0 l% Y
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! |( l, A$ H, Z! t2 j, X else 1 P( t+ _. b& l- K
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//if the user provided some other switch + c8 z; m: M% F
$ ^& S- p. P8 F: N5 ?5 M PingHost(argv[0]) ; , o2 w- }% [! H1 P
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, \2 e2 s! g. t6 l" s% B } & {6 j5 P9 J- n# O: H( x! E, S1 c * @7 v. |# p; Z0 U- F2 o# T else 8 m, u* C; @3 H* y b% g5 i! t4 o: V. M 5 }1 t7 W! z0 S { 8 p( r, K# U% S " d/ N( E! [1 C" T) z5 ~" ?" z* { //Some error occurred 7 k" E( k. g% m
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Console.WriteLine("Error in Arguments") ; 2 A( J9 P4 p( G! |5 c& O* W$ @0 d
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/// <summary> 5 J: e) u( M4 u. g! h0 f9 p; Z
( S& S4 b8 F& j5 g3 [ /// 主要的方法,用来取得IP, / m# K' y' K7 K" Q! d
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/// 并计算响应时间 1 ]* c2 S1 H5 Q* A k, V- V
' e5 _ B3 g- U2 K6 v/ U7 B8 {" Q7 d /// </summary> 9 }! s) o% l( U & V8 k1 Q9 M6 t" d% \
public static void PingHost(string host) ! @, K* J$ f# Y. P6 e; O
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{ 3 w+ [! v: e7 n/ l; A# n0 ] : L/ B2 w! P$ M //Declare the IPHostEntry ) E* m5 p# ~* I' a1 k6 j- i. L
3 n" `" s& j2 H% @( o IPHostEntry serverHE, fromHE; 4 M C3 `7 k( J8 I4 Y: X( g
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int nBytes = 0; ; F# z9 @. [8 {/ V- n: m
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int dwStart = 0, dwStop = 0; + n. l3 U& A1 _" ]6 N& |' ]4 ^
3 c" \- j! }, }% h" J) R //Initilize a Socket of the Type ICMP 9 S- E& x5 @4 T) P8 c! S
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Socket socket = 4 D0 s- u. V* T6 r# T m
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new Socket(AddressFamily.AfINet, SocketType.SockRaw, ProtocolType.ProtICMP); ' {' K' u( d2 V
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// Get the server endpoint ! T3 `6 v+ m5 e% G$ Z% G
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try % m% y1 S4 r9 m8 |/ {- I' |
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serverHE = DNS.GetHostByName(host); & Y4 d* o+ Q4 p0 |2 s
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catch(Exception) & W$ D' T3 @8 N$ u7 B
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Console.WriteLine("Host not found"); // fail $ l) P+ `: I$ W# V % i; j% N. X7 E7 T' G2 z' y& v
return ; 7 H( f5 L3 b: [ % v0 c. \9 z# y/ b } 0 ^7 m- ^5 V+ U% s+ R+ L+ ~
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* N5 I1 E: U1 v // Convert the server IP_EndPoint to an EndPoint 0 W7 j) ~( g5 \ $ G6 y5 Y9 H+ Z+ ?) s% U IPEndPoint ipepServer = new IPEndPoint(serverHE.AddressList[0], 0); , }, I7 o2 B, l* ^6 z! y9 ~ 4 J3 p' j: ^& {2 Y& B- W EndPoint epServer = (ipepServer); 4 V8 M! [, B/ g, A
d% f% k6 B& u j 6 t8 v9 R7 F8 ^$ S$ C2 y // Set the receiving endpoint to the client machine 0 W. j4 D2 o) p
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fromHE = DNS.GetHostByName(DNS.GetHostName()); 8 }6 K0 i/ _2 { % ^$ `9 W" t9 h4 \; W IPEndPoint ipEndPointFrom = new IPEndPoint(fromHE.AddressList[0], 0); / G* Q! Z9 u0 r( P( \ + k a* Z7 v* l/ L% ` EndPoint EndPointFrom = (ipEndPointFrom); / G1 U7 b& n2 Q" ]: C# L m
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int PacketSize = 0; - x* l" I, J% _& Y& Y" r 6 A8 X% D8 g6 F5 M5 e9 |! A
IcmpPacket packet = new IcmpPacket(); ( e H) u/ @1 p, k1 o0 {
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// Construct the packet to send 0 [, y' {6 R. X
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packet.Type = ICMP_ECHO; //8 - [3 o9 N7 f7 q! m& O+ @/ K 7 t+ Y3 j4 _% R$ k! K1 o! S+ r
packet.SubCode = 0; ) A2 h4 m7 _' H2 q }$ I) A % U8 U. c' m6 v, U packet.CheckSum = UInt16.Parse("0"); / a" b* s' e8 N/ m
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packet.Identifier = UInt16.Parse("45"); 3 W3 n/ v1 ?# j8 \2 ^+ m N {
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packet.SequenceNumber = UInt16.Parse("0"); O& l9 O! ` \" ^3 Q : x( s) q, w+ R% E" E% }4 r! I5 c
int PingData = 32; // sizeof(IcmpPacket) - 8; 6 C X) c1 {% S4 D% N
8 D" d" b! X5 M) y: A8 n packet.Data = new Byte[PingData]; 6 `* C$ ~; Q1 b7 D& G 6 w6 V t; s/ E4 c7 u //Initilize the Packet.Data ( G. m; N3 S! u& P
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for (int i = 0; i < PingData; i++) 2 @/ F8 k: y6 P! T. M + B- v8 a c0 j { 7 t! ]/ R& L p0 v0 G1 V 6 ~+ p- O4 B/ p7 h1 p- r packet.Data = (byte)'#'; ' |" L4 U- Y. z' L $ Y1 P/ _( u7 s! C1 t! H3 s5 Y
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//Variable to hold the total Packet size 4 o) C+ ~- N) R) |- }
5 h- |2 [. m3 ^( g PacketSize = PingData + 8; & c0 ~0 i. {2 X; j5 V: F : ^2 |9 q3 I$ W5 p- f Byte [] icmp_pkt_buffer = new Byte[ PacketSize ]; ; h/ Y, a; K/ I5 h" c
}6 }/ a$ l& s4 ~) @% U5 ~ Int32 Index = 0; 4 Z( M4 Y& E3 j& J # }; k# j( ~' c" m //Call a Method Serialize which counts * {6 `2 l# D; S3 w " @9 H) q% I% O/ x5 o
//The total number of Bytes in the Packet ( Z/ S" } {2 P; u$ _( X8 h 1 i7 \" h+ ]2 k8 o$ [3 m
Index = Serialize( # Q7 b- T) H# m* e+ A& S1 y
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icmp_pkt_buffer, 5 ?7 g$ y% n$ L" m( J- U# A( ^ : ]$ p5 u# m, F n3 ~ PacketSize, : k: V1 m: \! L 8 X. K, W7 X* t) s% U PingData ); 5 l* ~/ N8 S+ R' L
# x- w6 P3 { f0 @2 r7 i //Error in Packet Size % D( H0 b+ e/ K( F0 `/ w , ]* I/ t, m8 F/ J7 G k, M+ M; ]
if( Index == -1 ) + [$ }- H6 G% J
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Console.WriteLine("Error in Making Packet"); " @% S: L j, L p9 I5 A, h! | ! g2 A- \$ A4 A
return ; $ s7 |3 L" Z/ J$ t! s ' ?" l- y2 Q6 i% o1 e
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// now get this critter into a UInt16 array 1 c0 k1 H4 z/ m' r0 V: I2 b, I 3 ]1 t' r4 @. ]3 U- z; F6 x4 w2 a
1 u0 y/ d. j0 C" U- N //Get the Half size of the Packet : h3 u" G( }% {) }5 Y9 `0 x
: U- b4 Q1 J4 L( a: f2 B' @/ } Double double_length = Convert.ToDouble(Index); : f d+ e, W3 [( M; y R