Websocket服務，調用Task做訊息發送，出現session does not exits

[lda124520]

Please answer these questions before submitting your issue.

1. What did you do? If possible, provide a simple script for reproducing the error.
   我要做聊天室，透過Worker接收client request後，調用Task做邏輯處理以及push訊息回Client

假設當前有一位使用者連上websocket，其fd = 100
當client 送出聊天訊息 request server 後，
直接在OnMessage做邏輯處理和push訊息給fd = 100的 client是成功的
但如在OnMessage調用Task做push訊息
會出現Session#100 does not exits
這在以前使用php5/6 + swoole2.x版是可以的
近期升級後發現不行

2. What did you expect to see?
   期望可以調用Task做訊息推送

3. What did you see instead?
   無法透過Task做訊息推送

4. What version of Swoole are you using (show your php --ri swoole)?
   Swoole => enabled
   Author => Swoole Team team@swoole.com
   Version => 5.1.2
   Built => Jan 24 2024 10:14:10
   coroutine => enabled with boost asm context
   trace_log => enabled
   epoll => enabled
   eventfd => enabled
   signalfd => enabled
   cpu_affinity => enabled
   spinlock => enabled
   rwlock => enabled
   sockets => enabled
   openssl => OpenSSL 1.0.2k-fips 26 Jan 2017
   http2 => enabled
   json => enabled
   pcre => enabled
   c-ares => 1.10.0
   zlib => 1.2.7
   mutex_timedlock => enabled
   pthread_barrier => enabled
   futex => enabled
   mysqlnd => enabled
   async_redis => enabled
   coroutine_odbc => enabled
   coroutine_sqlite => enabled

Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.enable_library => On => On
swoole.enable_fiber_mock => Off => Off
swoole.enable_preemptive_scheduler => Off => Off
swoole.display_errors => On => On
swoole.use_shortname => On => On
swoole.unixsock_buffer_size => 8388608 => 8388608

5. What is your machine environment used (show your uname -a & php -v & gcc -v) ?
   Linux dev 3.10.0-1062.12.1.el7.x86_64 编译出错 #1 SMP Tue Feb 4 23:02:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

PHP 8.2.11 (cli) (built: Sep 26 2023 11:11:58) (NTS gcc x86_64)
Copyright (c) The PHP Group
Zend Engine v4.2.11, Copyright (c) Zend Technologies

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)

以下是server端 php碼

以下是執行結果

[NathanFreeman]

$this->ws = new Swoole\WebSocket\Server("0.0.0.0", 9061, SWOOLE_PROCESS);

尝试一下实例化的时候加上SWOOLE_PROCESS

[lda124520]

$this->ws = new Swoole\WebSocket\Server("0.0.0.0", 9061, SWOOLE_PROCESS);

尝试一下实例化的时候加上SWOOLE_PROCESS

可以了，刚查了文档发现swoole5后预设是 SWOOLE_BASE
非常感谢您

另外想请问
使用swoole websocket来开发多人聊天室(可群聊，可私聊)
将所有onMessage 收到的讯息都一律调用task做逻辑处理
所有push讯息，也只让task处理
这样的设计在swoole适合吗
或是讯息量大的时候，会不会容易造成server崩溃
网上比较少看到其他人这样设计
怕是我对swoole的观念不正确

[NathanFreeman]

不合理，Task的设计目的是为了执行阻塞代码，不阻塞主进程

[lda124520]

不合理，Task的设计目的是为了执行阻塞代码，不阻塞主进程

了解

想请问您的建议
在处理群聊讯息的需求下
使用swoole websocket server (实利化使用SWOOLE_PROCESS)

直接透过OnMessage处理逻辑和push广播讯息
并拉高work_num的数量维持效能
如有遇到需要耗时处理的业务，才额外调用task

这样合适吗，是否符合swoole设計的worker和task用意呢

[NathanFreeman]

可以呀