PHP 简单实现webSocket

admin · 发表于 2018-10-27 12:35:15

1）客户端实现

<html>
$ r7 q/ Y" b+ }! s8 _& _2 ~
<head>( k- i0 ?6 i7 `5 Z8 M( f1 o
<meta charset="UTF-8">% B3 a' L4 q; T- l. g& }9 s
<title>Web sockets test</title>$ Y Z" Y; w: l
<script src="jquery-min.js" type="text/javascript"></script>
7 h1 N x; Y* n0 ?$ [/ d
<script type="text/javascript">, U- Y5 M( K5 G2 u
var ws;
2 C9 ^# X. |. E
function ToggleConnectionClicked() { 3 G, m, Q! ~: n& d1 s2 ^7 x% `
try {; F& c0 c! J' M) h# ?3 B
ws = new WebSocket("ws://127.0.0.1:2000");//连接服务器 , f# E' {, Z, S' ^* y
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);};
- [$ n2 f2 D9 z& Y
ws.onmessage = function(event){alert("接收到服务器发送的数据：\r\n"+event.data);};
$ M$ O2 K8 z- H( U6 w8 P( }' Q
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);};+ P/ H+ ], X$ N+ ?6 P& C9 U
ws.onerror = function(event){alert("WebSocket异常！");};1 X! |6 N6 _, [# u1 y D1 Y1 ~7 F: Y
} catch (ex) {4 g/ E9 K9 n. x, b/ [: n# o
alert(ex.message);
4 o8 V' S+ Y% b0 [$ b; L; {
}
. H! L" |6 o3 ]
};
; r6 `1 U, G! N- x% z1 K
4 i9 _& P! I* }/ N$ X
function SendData() {
% W) {: K2 _( h) B
try{8 b5 J7 W0 I8 T# r% m1 r; E
var content = document.getElementById("content").value;5 }: N7 r) u4 u" p% e4 }
if(content){) [5 [) K' V$ @0 x$ |# @8 e
ws.send(content);
! s4 b. z; N; b0 J. I6 _
}* x9 P, p* I+ v$ ~8 N
1 w/ @# p0 i. {& A
}catch(ex){, X% Q2 E. A/ m' ?! J
alert(ex.message);
6 M) u- l$ S p* I
}
, h4 e; s$ M6 j3 {$ v
};) a0 [$ f6 b f- Z
# V+ |; Q( f9 B
function seestate(){+ _. O2 v- e `9 w" V) ~% {% }
alert(ws.readyState);
! i) l" u Z5 d O' |
}6 c3 _- x9 Y; V Y. _' ^
% P( W3 F; V% j* p6 ?
</script>
0 Q l2 G8 a% G) E6 T8 b" ^
</head>% A% v: S8 b1 b }) F
<body>5 B' n% \; _. J; a6 G* d% I
<button id='ToggleConnection' type="button" onclick='ToggleConnectionClicked();'>连接服务器</button><br /><br />% [$ x% z1 }; F0 u6 w9 D2 w8 ]8 `
<textarea id="content" ></textarea>
% B L j t7 b/ d6 ?3 W
<button id='ToggleConnection' type="button" onclick='SendData();'>发送我的名字：beston</button><br /><br />
, X& r' v1 }" m$ z: v3 @, M; x
<button id='ToggleConnection' type="button" onclick='seestate();'>查看状态</button><br /><br />* m1 d4 S5 A* d0 `9 Q
* C# `6 m7 e0 h3 ~9 R g( [" Z/ I
</body>
~6 y6 e3 @) y5 K. v% N
</html>
, G6 Q# W' ]$ e" _" _, V: O# U

复制代码

2）服务器端实现

class WS {
5 ]) L! ]% g/ J! }1 |
var $master; // 连接 server 的 client+ |! }5 ]' b1 l7 @; p
var $sockets = array(); // 不同状态的 socket 管理
- k" y, O0 F) N0 @- `; {" M( f2 B' _
var $handshake = false; // 判断是否握手# M$ E! L0 g @# F7 T
3 R; s# [* Q+ W/ d5 I
function __construct($address, $port){
+ q% }' s3 Y& b# l/ a9 ? y
// 建立一个 socket 套接字
2 R4 _( f W3 c: Q8 L+ B# D
$this->master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)
" r4 \* e/ f6 ?- p; w4 `4 x$ F/ P$ E+ ]
or die("socket_create() failed");
4 A- B% X* J1 Z' |+ z/ t1 [. z K
socket_set_option($this->master, SOL_SOCKET, SO_REUSEADDR, 1)
; t$ o/ J! h7 g
or die("socket_option() failed");+ c& ~1 m" O8 T, e# Y
socket_bind($this->master, $address, $port)
+ m" i1 G# `- k. J9 Q
or die("socket_bind() failed");5 `! G0 M; U( g: x! e3 g
socket_listen($this->master, 2)
) g8 S4 j2 d( G4 n @
or die("socket_listen() failed");8 q5 p$ o: c" O" H. }
6 i( l: o2 ]- N) ]/ f$ ]; s
$this->sockets[] = $this->master;7 j- x, @' x4 L: q/ Q8 [2 m7 J
* U' T6 _" q/ E) b
// debug5 M9 b7 B; _5 k& R% D) G
echo("Master socket : ".$this->master."\n");- @6 s* q% \2 N7 H7 [4 O
' G0 s3 i0 d8 N0 @& D+ e9 |
while(true) {! y! }/ \( z$ q l9 a
//自动选择来消息的 socket 如果是握手自动选择主机
' Y$ a3 m& _$ M/ x
$write = NULL;' b( M4 Z+ c- H- _. a% a* t
$except = NULL;' H1 D8 d7 b4 g& J. n8 D5 O5 l
socket_select($this->sockets, $write, $except, NULL); N# j: N5 Z, l* z& f* e
- @# ~! E! O* @8 q1 T
foreach ($this->sockets as $socket) {6 Y' q& O' _& V; Y& k1 G; U
//连接主机的 client
( S6 q. N; v% D5 `. q
if ($socket == $this->master){
) n o) x1 K& U- l4 x1 @
$client = socket_accept($this->master);
. l( Y, v, ]6 z1 G% r
if ($client < 0) {
: L, d% m/ m/ j: g
// debug- |) G4 P( X% {3 N, H, k! n
echo "socket_accept() failed";
) c8 C" w$ Q$ l4 ~' K2 A% [5 G
continue;+ E/ d$ L/ W/ I( ]/ ?- U+ |
} else {2 y$ z3 m; T' q% h
//connect($client);* W& ?* g5 J2 E2 D
array_push($this->sockets, $client);
# `& C* q, p }) a
echo "connect client\n";8 ^! M* U+ j! J( U' _. I$ l4 b
}2 U) y d% G S* @: K; a2 w! |; }
} else {
# b; _0 k: g& l
$bytes = @socket_recv($socket,$buffer,2048,0);8 y1 _* R! g- u% u9 I
print_r($buffer);6 O& @3 {5 P4 m. A6 D3 \8 A$ |& f
if($bytes == 0) return;' }3 b8 I+ W# D% r1 g1 _: Z
if (!$this->handshake) {* T" ]1 R3 x" }% ?9 r/ ?, x
// 如果没有握手，先握手回应
- L- O7 p8 D/ M1 y, `. G: i
$this->doHandShake($socket, $buffer);
; s6 f' L* e5 D1 T$ U3 i7 H* [
echo "shakeHands\n";2 T+ m/ J; @7 x3 `9 y) a, K2 n0 O
} else {
) l/ q o% U: m3 {
O( n$ h% |' B5 v! p
// 如果已经握手，直接接受数据，并处理
$ K% N% ?9 E4 Z& c
$buffer = $this->decode($buffer);: m# g+ a0 c6 i; h* ^
//process($socket, $buffer);
% J0 {1 O4 @% W# c% P' ?4 i6 @
echo "send file\n";- a5 s: j' M1 ?+ e0 Q' I' J# g
}* L- D- Y ]1 K4 F
}
7 `0 g" p8 d0 h1 D9 P$ `
}2 q% T& z. l/ b* f
}& A! y4 W( Y Z8 ?$ k+ c
}7 ~7 R5 X: t& Y6 N m* i: M$ \
& A% N' W. T) d4 ]' ~
function dohandshake($socket, $req)" f! Y# v$ i, h+ c; a
{
& u6 i5 y6 D* t
// 获取加密key
9 N9 p7 J2 @2 }
$acceptKey = $this->encry($req);4 e$ N9 E& u' L8 h" |
$upgrade = "HTTP/1.1 101 Switching Protocols\r\n" .- H$ P8 w+ O0 v0 B6 c
"Upgrade: websocket\r\n" .
9 B7 b! a' n. h" c& G
"Connection: Upgrade\r\n" .
2 j( }& {, ~3 B }; Y, Y, |- Z
"Sec-WebSocket-Accept: " . $acceptKey . "\r\n" .
: F6 m# n+ \/ k v9 w1 Q
"\r\n";
4 }% U0 [! P/ |
% V% U; p1 F- L' r" o( R2 H
echo "dohandshake ".$upgrade.chr(0);
+ T5 D4 |; `6 p" R
// 写入socket! ^! [6 S* H0 k2 G
socket_write($socket,$upgrade.chr(0), strlen($upgrade.chr(0)));7 I ^0 K3 y3 v4 @
// 标记握手已经成功，下次接受数据采用数据帧格式
. K/ w7 m2 w7 ?$ m
$this->handshake = true;
: y* Z$ z# w2 R0 a1 [' y
}
+ r9 ]5 G) U9 e4 e) E, ~' X6 c
0 l- j8 D: K. A; r2 W
, u6 D* I i& z1 Z7 n6 ?' l* t
function encry($req)- y5 U$ L3 L" E4 I$ f, X1 n$ s
{
+ `( N q: P" T3 c
$key = $this->getKey($req);
% Z1 N0 b# B6 Q7 ?
$mask = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";7 a* W7 X& A9 @8 O8 _& w+ ]
6 v2 n A" X* P; r9 N( q1 c
return base64_encode(sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true));, p. S: o- s5 Z; ?; C
}' w) [+ ~7 T) V
1 g/ B A3 A- c
function getKey($req) & y d* f$ z' ^8 `$ d8 g$ Y+ f! G
{( k) z- i& O/ N% Z
$key = null;
, o6 b: p, p1 |% f) v
if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/", $req, $match)) {
0 {9 r. _- {7 a1 |/ d6 S8 n
$key = $match[1]; & c9 C6 l S4 { G5 [
}
# _, T- N3 y# U6 y
return $key;
3 c3 z& q9 R$ A% p
}# \& R' [5 b* S/ N
1 h3 K' A& y3 }
// 解析数据帧1 |; _4 g# T" o! a
function decode($buffer) + S( k( n; G, |* q6 O
{' E8 X4 M( d$ M& h. y; v
$len = $masks = $data = $decoded = null;
$ e! a @/ a$ [8 P9 l. w. |
$len = ord($buffer[1]) & 127;
$ R) @& ]( |5 ]' X; }
" m2 I4 O% a# m1 L3 Q
if ($len === 126) {; ^7 Q2 s7 C. s! C7 E
$masks = substr($buffer, 4, 4);
' i3 U0 W0 K5 F$ N* A
$data = substr($buffer, 8);/ V. ^3 A- [8 M; z: @8 y9 K
} else if ($len === 127) {9 e$ \6 C6 d+ B8 V) x4 B) ~
$masks = substr($buffer, 10, 4);+ E4 h5 I4 ~( [6 I
$data = substr($buffer, 14);
% c, {8 K, {/ T, {
} else {
- z" {2 s! G+ `) c6 @4 T% }5 A
$masks = substr($buffer, 2, 4);
8 z/ R1 O& I) }9 ?' }( M' ?2 C
$data = substr($buffer, 6);! t" a+ {3 x: g* N! I1 j" k3 C; e4 ~
}
4 b% Q% w( \3 `$ ~$ V& B9 k
for ($index = 0; $index < strlen($data); $index++) {
, t& K8 d1 N9 ?8 e0 _1 q
$decoded .= $data[$index] ^ $masks[$index % 4];
* r+ Q6 F! _% E2 u
}
6 ?. ~- C' Z y) J% F
return $decoded;
( ^9 U% E0 |( f4 P: h
}
/ Y# f+ E) J/ h+ n
6 U- d7 b, \2 T0 l3 F7 j0 n
// 返回帧信息处理
( @5 b( n! ^0 K; ^4 E/ A6 {
function frame($s) - Z1 S# v4 m2 A4 Y
{$ n* b$ ?% v* ?$ |1 [1 h
$a = str_split($s, 125);
/ I0 x5 O" u1 j
if (count($a) == 1) {
5 }. n) _: k: u
return "\x81" . chr(strlen($a[0])) . $a[0];2 z4 ^2 d& l5 V$ p5 r
}2 C" J; | R' Y( s: m; Q2 Z$ |2 P" G! y
$ns = "";
, K0 B8 W. \& N" @' H
foreach ($a as $o) {$ V% U4 I( L, Z
$ns .= "\x81" . chr(strlen($o)) . $o;
) ~3 e& {: C; g9 s9 T& P
}
; N2 W# v$ K+ j% A9 H* B4 W. o) d
return $ns;3 ]. }8 Z0 ^& L, o! T8 c' c
}$ R+ W! ?1 c4 n
2 t- t V: ^+ A0 t% V, A
// 返回数据5 T, b# [4 a7 \5 {( v5 o
function send($client, $msg)9 l4 O" y! d) Y0 i/ t3 _: @
{
% G/ x5 P/ z* g1 `5 f$ g
$msg = $this->frame($msg);
9 O ], y4 R! L* B2 q, _
socket_write($client, $msg, strlen($msg));
- c$ E2 ^# ^4 f* y2 o' m- K1 R
}
, q6 [% E' a9 F! X' \1 |- ~
}( f" _! t$ J7 m6 V, ?! x
! J* g+ C; N1 z" N; b
测试 $ws = new WS("127.0.0.1",2000);8 \! U# s J# u( s
/ `+ w& e3 |% @ ]6 K! T7 M4 a

复制代码

帐号		自动登录	找回密码
密码			立即注册

[php学习资料] PHP 简单实现webSocket

浏览过的版块