# NME at /usr/lib/ruby/1.8/drb/drb.rb:1204 - undefined method \`alive?' for nil:NilClass

**URL:** <https://www.ruby-forum.com/t/nme-at-usr-lib-ruby-1-8-drb-drb-rb-1204-undefined-method-alive-for-nil-nilclass/153517>\
**Category:** Development\
**Created:** [November 18, 2008, 9:10am UTC](https://www.ruby-forum.com/t/nme-at-usr-lib-ruby-1-8-drb-drb-rb-1204-undefined-method-alive-for-nil-nilclass/153517 "2008-11-18T09:10:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![NAKAMURAS\_Hiroshi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f1d935/32.png) [@NAKAMURAS\_Hiroshi](https://www.ruby-forum.com/u/NAKAMURAS_Hiroshi)\
**Post date:** [November 18, 2008, 9:10am UTC](https://www.ruby-forum.com/t/nme-at-usr-lib-ruby-1-8-drb-drb-rb-1204-undefined-method-alive-for-nil-nilclass/153517/1 "2008-11-18T09:10:40Z")

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e$BET9g$K$h$j\>/$78E$$e(BRubye$B$Ne(BDRbe$B$r;H$C$F$$$k$N$G$9$,!"$H$"$k4D6-$G!"0J2\<$NNce(B  
e$B30$,=P$^$7$?!#:F8=\<j=g$O3NN)$G$-$F$$$^$;$s!#e(B

Exception `NoMethodError' at /usr/lib/ruby/1.8/drb/drb.rb:1204 - undefined method`alive?’ for nil:NilClass

# DRbConn#alive?e$B$G$9!#e(B

DRbConn.opene$B$Ne(Bensuree$B$G!“e(Bconne$B$,Hse(Bnile$B$Ge(Bsucce$B$,e(Bfalsee$B$@$H!“e(Bclosede$B$Je(BDRbConne$B$,e(B  
poole$B$K;D$k!”$H$$$&\>u67$,$”$j$=$&$G$9!#$H$$$&$o$1$G$3$s$J46$8e(B?

— drb.rb 2006-07-10 10:57:18.000000000 +0900  
+++ /home/nahi/drb.rb 2008-11-14 15:41:31.000000000 +0900  
@@ -1202,4 +1202,5 @@ module DRb

```
 def alive? # :nodoc:

```

- 

```
 return false unless @protocol
 @protocol.alive?

```

end

---

<div class="post-metadata">

**Author:** ![NAKAMURAS\_Hiroshi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f1d935/32.png) [@NAKAMURAS\_Hiroshi](https://www.ruby-forum.com/u/NAKAMURAS_Hiroshi)\
**Post date:** [November 18, 2008, 12:38pm UTC](https://www.ruby-forum.com/t/nme-at-usr-lib-ruby-1-8-drb-drb-rb-1204-undefined-method-alive-for-nil-nilclass/153517/2 "2008-11-18T12:38:20Z")

</div>

e$B31$H$$$$$^$9!#e(B

On 2008/11/18, at 17:04, NAKAMURA, Hiroshi wrote:

> succe$B$,e(Bfalsee$B$@$H!“e(Bclosede$B$Je(BDRbConne$B$,e(B  
> poole$B$K;D$k!”$H$$$&\>u67$,$"$j$=$&$G$9!#$H$$$&$o$1$G$3$s$J46$8e(B?
> 
> — drb.rb 2006-07-10 10:57:18.000000000 +0900  
> +++ /home/nahi/drb.rb 2008-11-14 15:41:31.000000000 +0900  
> @@ -1202,4 +1202,5 @@ module DRb
> 
> ```
> def alive? # :nodoc:
> 
> ```
> 
> - 
> 
> ```
> return false unless @protocol
> @protocol.alive?
> 
> ```
> 
> end

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e$B;XE&$NDL$j$@$H;W$$$^$9!#$"$j$,$H$&$4$6$$$^$9!#e(B

e$B:#=5Cf$K:n6H$7$^$9!#e(B