[HELP WANTED] Connection failed: IncompleteResponseFromEngineIo(InvalidPacketId(57))

[zhangkai803]

What I want: I'm writing a small program to connect to my wss server and emit some custom events continuously, then i will folk about 1000 processes to simulate a large number of connections and events.

I encountered this error Connection failed: IncompleteResponseFromEngineIo(InvalidPacketId(57)) while following the demo in readme.md.

❯ RUST_BACKTRACE=full cargo run
   Compiling wss_rs v0.1.0 (/Users/k/PycharmProjects/locusts/wss_rs)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
     Running `target/debug/wss_rs`
thread 'main' panicked at src/main.rs:26:10:
Connection failed: IncompleteResponseFromEngineIo(InvalidPacketId(57))
stack backtrace:
   0:        0x104e6604c - std::backtrace_rs::backtrace::libunwind::trace::hbebc8679d47bdc2c
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:        0x104e6604c - std::backtrace_rs::backtrace::trace_unsynchronized::h3a2e9637943241aa
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:        0x104e6604c - std::sys::backtrace::_print_fmt::he430849680584674
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/sys/backtrace.rs:65:5
   3:        0x104e6604c - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h243268f17d714c7f
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/sys/backtrace.rs:40:26
   4:        0x104e80c68 - core::fmt::rt::Argument::fmt::h0d339881c25f3c31
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/fmt/rt.rs:173:76
   5:        0x104e80c68 - core::fmt::write::hb3cfb8a30e72d7ff
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/fmt/mod.rs:1182:21
   6:        0x104e63700 - std::io::Write::write_fmt::hfb2314975de9ecf1
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/io/mod.rs:1827:15
   7:        0x104e67128 - std::sys::backtrace::BacktraceLock::print::he14461129ccbfef5
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/sys/backtrace.rs:43:9
   8:        0x104e67128 - std::panicking::default_hook::{{closure}}::h14c7718ccf39d316
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:269:22
   9:        0x104e66d4c - std::panicking::default_hook::hc62e60da3be2f352
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:296:9
  10:        0x104e67bec - std::panicking::rust_panic_with_hook::h09e8a656f11e82b2
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:800:13
  11:        0x104e6753c - std::panicking::begin_panic_handler::{{closure}}::h1230eb3cc91b241c
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:674:13
  12:        0x104e664d8 - std::sys::backtrace::__rust_end_short_backtrace::hc3491307aceda2c2
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/sys/backtrace.rs:168:18
  13:        0x104e67204 - rust_begin_unwind
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:665:5
  14:        0x104e95fac - core::panicking::panic_fmt::ha4b80a05b9fff47a
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/panicking.rs:74:14
  15:        0x104e963c8 - core::result::unwrap_failed::h441932a0bca0dd7f
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/result.rs:1679:5
  16:        0x1049755a4 - core::result::Result<T,E>::expect::h8c1a4cd0e7d66870
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/result.rs:1059:23
  17:        0x104972324 - wss_rs::main::h2610a459486072e9
                               at /Users/k/PycharmProjects/locusts/wss_rs/src/main.rs:19:18
  18:        0x104970244 - core::ops::function::FnOnce::call_once::ha2e5ba740545778c
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/ops/function.rs:250:5
  19:        0x1049766a0 - std::sys::backtrace::__rust_begin_short_backtrace::h91386cabb6166a7b
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/sys/backtrace.rs:152:18
  20:        0x104976654 - std::rt::lang_start::{{closure}}::h2c5948a0402bc8cf
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/rt.rs:162:18
  21:        0x104e60388 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4f74490c6170ea16
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/core/src/ops/function.rs:284:13
  22:        0x104e60388 - std::panicking::try::do_call::h2f36d2f1f1af8d28
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:557:40
  23:        0x104e60388 - std::panicking::try::ha6af9029a7d93c94
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:521:19
  24:        0x104e60388 - std::panic::catch_unwind::ha4f738ae2ba7c3a4
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panic.rs:350:14
  25:        0x104e60388 - std::rt::lang_start_internal::{{closure}}::hf216622dc2c733e3
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/rt.rs:141:48
  26:        0x104e60388 - std::panicking::try::do_call::haa691957db1dd55f
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:557:40
  27:        0x104e60388 - std::panicking::try::ha0c1a49b9fabc98e
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panicking.rs:521:19
  28:        0x104e60388 - std::panic::catch_unwind::h68ad032c646bb0ab
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/panic.rs:350:14
  29:        0x104e60388 - std::rt::lang_start_internal::hdd117cb81a316264
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/rt.rs:141:20
  30:        0x104976620 - std::rt::lang_start::hf7dd5c4694bc9ecb
                               at /rustc/eeb90cda1969383f56a2637cbd3037bdf598841c/library/std/src/rt.rs:161:17
  31:        0x10497284c - _main

What I did: I changed the address of the server, and nothing else.

Besides, I can receive the connect request at the sever end:

[zhangkai803]

The version of socker.io at server side is "version": "2.4.1", maybe this is the problem?

[zhangkai803]

The version of engine.io is "version": "3.5.0". ok i'm done...