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iojs debug -p <pid> starts debugger in debug client #889

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bnoordhuis opened this issue Feb 19, 2015 · 2 comments
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iojs debug -p <pid> starts debugger in debug client #889

bnoordhuis opened this issue Feb 19, 2015 · 2 comments
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confirmed-bug Issues with confirmed bugs.

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@bnoordhuis
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$ out/Release/iojs --debug-brk benchmark/http_simple.js 
Debugger listening on port 5858

# from another terminal window
$ out/Release/iojs debug -p $(pgrep iojs)
< Error: listen EADDRINUSE :::5858
<     at Object.exports._errnoException (util.js:734:11)
<     at exports._exceptionWithHostPort (util.js:757:20)
<     at Agent.Server._listen2 (net.js:1155:14)
<     at listen (net.js:1181:10)
<     at Agent.Server.listen (net.js:1268:5)
<     at Object.start (_debug_agent.js:21:9)
<     at startup (node.js:68:9)
<     at node.js:799:3
connecting to port 5858... ok
break in benchmark/http_simple.js:1
> 1 var path = require('path'),
  2     exec = require('child_process').exec,
  3     http = require('http');
debug>

No real harm, the debug client is still fully functional.
@bnoordhuis bnoordhuis added confirmed-bug Issues with confirmed bugs. debugger labels Feb 19, 2015
@JacksonTian
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No need to start agent server when debug with remote mode(-p pid/host:port).

This was referenced Mar 27, 2015
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bnoordhuis pushed a commit that referenced this issue Mar 27, 2015
@JacksonTian @bnoordhuis
debugger: don't spawn child process in remote mode
a2ea168 
When debug in remote mode with host:port or pid, the interface
spawn child process also. If the debugger agent is running, will
get following output:

```
< Error: listen EADDRINUSE :::5858
<     at Object.exports._errnoException (util.js:734:11)
<     at exports._exceptionWithHostPort (util.js:757:20)
<     at Agent.Server._listen2 (net.js:1155:14)
<     at listen (net.js:1181:10)
<     at Agent.Server.listen (net.js:1268:5)
<     at Object.start (_debug_agent.js:21:9)
<     at startup (node.js:68:9)
<     at node.js:799:3
```

This fix won't spawn child process and no more error message was
shown.

When use `iojs debug`, the tip information just like this:

```
Usage: iojs debug script.js
```

This fix will display the advance usage also:

```
Usage: iojs debug script.js
       iojs debug <host>:<port>
       iojs debug -p <pid>
```

Fixes: #889
PR-URL: #1282
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
@Fishrock123
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Fixed in a2ea168

@leonardoadame leonardoadame mentioned this issue Nov 28, 2023
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@bnoordhuis @JacksonTian @Fishrock123