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1)客户端实现) {$ m' n! c t$ `
- <html>/ \$ S- U N$ @2 g- y, j: x1 r
- <head>9 x1 b" F' i4 r& Q6 ]1 J7 ]
- <meta charset="UTF-8">1 W6 O' a8 h% x3 u" P; Y- [7 r
- <title>Web sockets test</title>; @) X# X M' l
- <script src="jquery-min.js" type="text/javascript"></script>7 n: p7 m: @1 ]& o% A& S0 Y
- <script type="text/javascript">
. K6 o" i, m0 s3 f6 d. Q3 f - var ws;
; s1 p1 j+ c- c2 D5 B! p: z - function ToggleConnectionClicked() { ! \" R7 U3 B q' E, u% W
- try { p. ~3 v) R1 Y7 W( V0 a
- ws = new WebSocket("ws://127.0.0.1:2000");//连接服务器
. Q ~- T9 G) o- D( c - ws.onopen = function(event){alert("已经与服务器建立了连接\r\n当前连接状态:"+this.readyState);};
3 O2 e0 K5 o) Q# @ - ws.onmessage = function(event){alert("接收到服务器发送的数据:\r\n"+event.data);};
; R* q4 z5 Z) h( J4 X - ws.onclose = function(event){alert("已经与服务器断开连接\r\n当前连接状态:"+this.readyState);};
! a& f: B; Y# {0 K& ] - ws.onerror = function(event){alert("WebSocket异常!");};5 c2 a) N8 ^( j) [
- } catch (ex) {
" x: v1 O9 K. T( r. w0 P - alert(ex.message);
. D( P( F7 X$ U9 N d2 j3 p - }
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- function SendData() {
& Z( G8 ?$ E+ \" }8 H) R8 g - try{' }$ _3 q( M9 O- b
- var content = document.getElementById("content").value;6 }$ I/ o' S) Q7 v
- if(content){8 W, B# _2 l9 n: z- N
- ws.send(content);- h9 |8 {5 Q2 t9 X6 M! `1 Q2 s
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- }catch(ex){2 Q& P3 \! A1 ~7 i9 R
- alert(ex.message);# L& C8 q4 D( I4 o# U) N' M
- }
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- function seestate(){1 u% V( U4 |* ~' Z- S# D' }
- alert(ws.readyState);4 H4 P) o, S0 h, n4 _ M* b
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- </script>9 P: o: J# _, ?( x- F) G0 Z
- </head># S& v* o7 @4 w u& Q& d
- <body> H# d6 K0 Z7 l1 p# U: {! x
- <button id='ToggleConnection' type="button" onclick='ToggleConnectionClicked();'>连接服务器</button><br /><br />
3 Z4 A+ l5 ^; U3 U% I- A - <textarea id="content" ></textarea>
0 C- T& z) c. C6 v' N5 m ^6 U - <button id='ToggleConnection' type="button" onclick='SendData();'>发送我的名字:beston</button><br /><br />
- ^$ A* s* U6 }8 |. ~ - <button id='ToggleConnection' type="button" onclick='seestate();'>查看状态</button><br /><br />% N6 R* }' y5 l, l. t7 I
- n7 m. e! a8 b2 o& A& P- </body>
7 Y8 a2 P/ k0 k6 } - </html>
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复制代码
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2)服务器端实现: I) |7 b* Y& k7 b1 E& Q6 U
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- class WS {* y# {. P' g9 }/ }- F1 F
- var $master; // 连接 server 的 client/ y5 I" O& r- S/ M j, [
- var $sockets = array(); // 不同状态的 socket 管理7 J. t+ q3 y! Z W+ T) d( c
- var $handshake = false; // 判断是否握手0 r6 }; D2 N& h- E f
- + Z& @1 I: A% r; R; q4 Z& y$ I0 x
- function __construct($address, $port){- }5 j" ]: b) S; t! R' Y
- // 建立一个 socket 套接字
( o. M9 d) A1 _- A - $this->master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)
! F5 c' G. i% V3 ? - or die("socket_create() failed");8 r8 @3 v7 _6 L8 y* a7 [
- socket_set_option($this->master, SOL_SOCKET, SO_REUSEADDR, 1) ( ^" I; g' v4 F. F4 q* w& u; @" i
- or die("socket_option() failed");2 ~6 D2 d$ h) R: t5 Z/ h$ m
- socket_bind($this->master, $address, $port)
$ a4 ` [( h7 c! g& R5 j# c - or die("socket_bind() failed");) @, C6 f+ m/ @* q7 f! k' F6 A- N
- socket_listen($this->master, 2)
' |; P" I* ^$ R' _7 e) q - or die("socket_listen() failed");
/ v; f; }# ?- H3 R$ O* z) |! B8 \
6 I! w* h8 d' }; Z; b5 Q- $this->sockets[] = $this->master;
+ ? {; P, T+ {. Z - % A/ R2 O' |4 A$ F- L; l6 q" D2 O( z
- // debug. f$ u2 E: Q- N' W! v. E7 |& [" q
- echo("Master socket : ".$this->master."\n");# @8 V, K! A# U( ~ d+ i1 w5 W
j$ a1 i- e) I" N e- while(true) {! I2 D A# v0 M [% w; p, Z
- //自动选择来消息的 socket 如果是握手 自动选择主机
- t/ Z4 N. n5 Q9 r5 n - $write = NULL;2 x1 N9 |+ U4 G2 D1 F$ I
- $except = NULL;
9 B3 U3 ^- v+ ~- `+ j" M3 Q - socket_select($this->sockets, $write, $except, NULL);
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4 X/ _6 s# O2 h. t9 e- foreach ($this->sockets as $socket) {" K- Z9 e9 j) G; p
- //连接主机的 client . G' k+ l7 ` l5 h
- if ($socket == $this->master){; K Q: K/ o) ]! F* E. g/ u: D
- $client = socket_accept($this->master); c7 j# Z' V7 ?4 i$ W) p7 D
- if ($client < 0) {
- D2 m$ b9 O# K7 u* d l4 g/ W6 Y - // debug
( E1 w( ]6 F# Z3 ^; ~ - echo "socket_accept() failed";8 r) T& x& i* d6 M. _
- continue;6 ^% X. k: i4 `+ g
- } else {
) M' m3 g. ~) Q9 K7 | - //connect($client);& u3 b, m* \2 D) N6 D/ ]
- array_push($this->sockets, $client);) G1 @6 h" \# x7 j7 J5 G' ^
- echo "connect client\n";
% L' j2 _ i; U - }
) Y m4 P8 O4 L, s0 n - } else {
. } d2 y) \9 j+ _1 o' b6 C1 I - $bytes = @socket_recv($socket,$buffer,2048,0);
/ ]" Q9 r5 i) ~; I5 P x. q v - print_r($buffer);
" e; S" C5 a1 g, {; C7 o* w - if($bytes == 0) return;+ H8 [$ ?/ h' ^: @% }9 h. g
- if (!$this->handshake) {
) R+ Z7 a" f- Q$ \9 r% v" V - // 如果没有握手,先握手回应' h$ l$ j0 D& ]" f
- $this->doHandShake($socket, $buffer);
; u+ }9 @/ x/ l r7 r- Q - echo "shakeHands\n";5 U% V) @& a x. T( [
- } else {" W* e+ T* I4 e, y- X2 C" Q
- * [, M2 s0 y4 b4 c3 w' }$ J
- // 如果已经握手,直接接受数据,并处理
N! ~+ r* a% _: c - $buffer = $this->decode($buffer);6 \' w2 i1 x. j5 }
- //process($socket, $buffer); ! t: q- N8 ]: Z5 `
- echo "send file\n";
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- }
( L9 D3 E7 z: A) e - }
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- " M( K" x8 S% e% }1 \9 W) A9 L! V
- function dohandshake($socket, $req)) Z% ]0 Y) _) o
- {
8 y8 L3 E- W( |9 w: H - // 获取加密key2 ~4 K$ M7 e/ W/ ]# m- y2 `; J
- $acceptKey = $this->encry($req);4 R5 q1 O; [; D$ {/ J; W6 x
- $upgrade = "HTTP/1.1 101 Switching Protocols\r\n" .
2 ?7 i' S% F0 Q3 j8 U3 f) \4 |2 h - "Upgrade: websocket\r\n" .
; a, ]2 `/ i& N6 Y6 s. n+ T" _9 { - "Connection: Upgrade\r\n" .
) b# w2 h3 C9 H - "Sec-WebSocket-Accept: " . $acceptKey . "\r\n" .
; _$ U% g$ {& O0 z% @' U3 E. e6 f - "\r\n";, Y3 R6 D& v; R4 D& ~% n0 `6 Y
- 6 y( b$ w" P* m, Q- Z
- echo "dohandshake ".$upgrade.chr(0); " ]; a! k! R, j0 [! ]
- // 写入socket+ |' ^& N- Y6 }% n8 U" v7 s
- socket_write($socket,$upgrade.chr(0), strlen($upgrade.chr(0)));8 x) O' T3 U* m5 C
- // 标记握手已经成功,下次接受数据采用数据帧格式% b" T# D( r+ u I0 ~- I) M
- $this->handshake = true;( W- u3 k' D. C3 U3 W5 _* P
- }
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8 l8 m3 _$ a3 {: z3 V- function encry($req)
/ n j# X% C% y2 M9 K - {
- d* W' S3 B* X; N. | - $key = $this->getKey($req);& G, s& }# ^5 O7 x$ B2 l( }3 X
- $mask = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
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7 U6 U( Z6 V0 ?& F8 s3 l: e: ]# h- return base64_encode(sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true));
4 x' i4 Z. z; n6 L0 q - }
+ w8 q/ e- g& s- A+ @1 K - 8 j# R0 {1 @8 y. o1 p. F- l
- function getKey($req) ) w! X/ F* |* b0 |
- {
+ h$ r2 r- a, @" e3 c. G I& `6 M - $key = null;
$ v- d+ Y2 O$ V. c& @. k, L# O2 G - if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/", $req, $match)) {
$ ~: o( c) H6 N& H6 \4 W - $key = $match[1]; . }8 k) ?+ C8 O& _3 P
- }
; L: b4 r G j! j4 t - return $key;" s0 i" R/ x4 I$ S3 \( ^
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- # `4 o, N7 d1 w+ ]( z/ g* A
- // 解析数据帧
' X. o" x( H+ I0 b2 C' ? - function decode($buffer)
+ U& U$ A* V2 W @! x, z - {
% s; \2 C% S3 S - $len = $masks = $data = $decoded = null;# G. p8 j. i* G0 \/ [& w2 z
- $len = ord($buffer[1]) & 127;
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- if ($len === 126) {5 O. |6 t+ b/ a: ]0 N: m
- $masks = substr($buffer, 4, 4);
) l. x2 f+ ] I8 h* Q8 H d - $data = substr($buffer, 8);
% A. @+ Q$ H5 V. r, M - } else if ($len === 127) {( R! |6 ?8 x2 D3 F9 _9 u% ?, p
- $masks = substr($buffer, 10, 4);9 V6 O7 o2 b& N; s7 i" L, }
- $data = substr($buffer, 14);# W# q' |! s# F% @
- } else {
5 T4 E3 d/ A! G8 b: I - $masks = substr($buffer, 2, 4);
, @# u8 o' P2 p: g - $data = substr($buffer, 6);
1 a. ^4 T* _, [* ?; N4 k - }
+ t L# N: m) p" l. n7 f- W - for ($index = 0; $index < strlen($data); $index++) {
; L; a6 }* [+ ^ - $decoded .= $data[$index] ^ $masks[$index % 4];
- |6 _8 w4 H# S - }
3 q1 {; `' ^: q7 T6 r% r$ i - return $decoded;, }% _* j$ W2 d$ \
- }
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- // 返回帧信息处理
8 a4 ^" F- c; e4 d! O - function frame($s) ( l/ b" r" s1 B
- {
7 B+ X& Q3 k$ G9 @1 ^ - $a = str_split($s, 125);- ]. D1 L& m+ h
- if (count($a) == 1) {& ?: \9 d2 \+ D+ I7 ?" I, o' I" y
- return "\x81" . chr(strlen($a[0])) . $a[0];
. p0 B) |& q, J. i - }
! e! B6 s- i2 Y4 w6 W* m- E L7 d3 Y - $ns = "";6 k7 ^$ a/ |, ^) n% H6 P+ r
- foreach ($a as $o) {$ m" ~! [+ [! I+ m" @% n
- $ns .= "\x81" . chr(strlen($o)) . $o;
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- return $ns;& ~+ x6 M* S3 G! V M
- }
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- // 返回数据. w) w# G. J# i% a4 W
- function send($client, $msg)5 Z7 ?) c6 @2 w j$ N( o2 ?8 W1 J* T
- {
6 z. |% |0 A# J9 |' D1 e4 A - $msg = $this->frame($msg);
' L: e. \ B' `+ z" U( z% s/ J - socket_write($client, $msg, strlen($msg));
0 x. ?0 L0 p+ z) ~5 y" O. i1 G& h+ Z - }
( L6 H; C4 U7 N8 e - }
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' B! l4 d/ ~, e- 测试 $ws = new WS("127.0.0.1",2000);
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复制代码 }2 Z- C* w( E( d) z9 O* N
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