Error in httpuv::startServer about httpuv HOT 14 CLOSED

@timcdlucas Yes, httr assumes port 1410 is free. If this happens again you can use sudo lsof -i :1410 (I think) to see what process is using it.

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Have you compared your library(httr); library(httpuv); sessionInfo() with that person?

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@yihui not yet, I'll ask

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Here's @timcdlucas session info

R version 3.1.1 (2014-07-10)
Platform: i686-pc-linux-gnu (32-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] httr_0.4

loaded via a namespace (and not attached):
[1] digest_0.6.4   httpuv_1.3.0   Rcpp_0.11.2    RCurl_1.95-4.3 stringr_0.6.2

I have the same pkg versions of httr and httpuv

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cc @hadley

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Maybe it's a security issue?

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I'll look into that

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@sckott The port 1410 might have already been used, or requires admin privilege in his system. @hadley shiny tries a series of random ports and you can probably do the same in httr: https://github.com/rstudio/shiny/blob/ab1494777d3b5d943a00502b21e6832467887524/R/server.R#L655-L683

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This might be relevant:
r-lib/httr#120

Scott, can you get your user to try both of these commands, separately?

shiny::runExample("01_hello")

shiny::runExample("01_hello", port=1410)

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@yihui Thanks. I'll ask him about 1410

@jcheng5 Thanks. I'll have him try that. He's in the UK, so response tomorrow probably...

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@yihui unfortunately I can't do that because I need a determinstic url for OAuth

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@yihui I ran R as sudo R and still had the same errors.

@jcheng5 Hi. Yes runExample("01_hello") works but shiny::runExample("01_hello", port=1410) doesn't. shiny::runExample("01_hello", port=1450) did work so I think it is just a port issue.

I restarted my computer and it seems to work now. Is this quite fragile then? i.e. if someone else happens to be using port 1410 they will get the same, fairly opaque error?

Thanks for the help everyeone!

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thanks @jcheng5

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Hey - i'm running into issues here with packages like googlesheets and rdfp that seem to use httrpuv for the oauth.

Here is some output from some some commands:

> sessionInfo()
R version 3.4.1 (2017-06-30)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.2 LTS

Matrix products: default
BLAS: /usr/lib/libblas/libblas.so.3.6.0
LAPACK: /usr/lib/lapack/liblapack.so.3.6.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] compiler_3.4.1

And:

> shiny::runExample("01_hello")
Loading required package: shiny

Listening on http://127.0.0.1:6838
/usr/bin/xdg-open: 771: /usr/bin/xdg-open: www-browser: not found
/usr/bin/xdg-open: 771: /usr/bin/xdg-open: links2: not found
/usr/bin/xdg-open: 771: /usr/bin/xdg-open: elinks: not found
/usr/bin/xdg-open: 771: /usr/bin/xdg-open: links: not found
/usr/bin/xdg-open: 771: /usr/bin/xdg-open: lynx: not found
/usr/bin/xdg-open: 771: /usr/bin/xdg-open: w3m: not found
xdg-open: no method available for opening 'http://127.0.0.1:6838'

And:

> shiny::runExample("01_hello", port=1410)
Loading required package: shiny

Listening on http://127.0.0.1:1410
Error in startServer(host, port, handlerManager$createHttpuvApp()) : 
  Failed to create server

Does this just mean that the port is blocked - is there any way to know what port is going to be used before i make the call and kill that pid in advance (feels ugly).

Or do you see anything above that might suggest something else is going on?

Cheers - am kinda struggling with this one given a lot of what is going on is abstracted so far away from where i call it.

My real problem is that when i run:

> library(googlesheets)
> gs_auth()
Error in httpuv::startServer(use$host, use$port, list(call = listen)) : 
  Failed to create server
> 

Was trying to use the shiny example as a reproducible error.

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