Empty shiny apps always crash in interactive after 1.1.0

[ksavin]

Hello.

I've just updated shiny to 1.1.0 and can't debug shiny app anymore, including blank fluid page with no server logic. Apps immediately die with gray screen on runApp. No errors are displayed in console.
I'm running apps with R studio server. Apps that are already deployed are running just fine on the same server.

We are using NGINX on this server for basic authentication. Has anything changed in the new shiny version that may have caused a conflict when apps are being run interactively?

R version 3.4.3 (2017-11-30)
Platform: x86_64-redhat-linux-gnu (64-bit)
Running under: CentOS Linux 7 (Core)

Matrix products: default
BLAS/LAPACK: /usr/lib64/R/lib/libRblas.so

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               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    LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C             LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

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

other attached packages:
[1] shiny_1.1.0

loaded via a namespace (and not attached):
 [1] compiler_3.4.3   magrittr_1.5     R6_2.2.2         promises_1.0.1   later_0.7.2.9000 htmltools_0.3.6  tools_3.4.3     
 [8] yaml_2.1.18      Rcpp_0.12.17     digest_0.6.15    xtable_1.8-2     httpuv_1.4.3     mime_0.5   

[jcheng5]

It looks like you're using RStudio Server--what version?

Can you try downgrading to the previous version of Shiny and httpuv, restart, and confirm that the problem goes away? devtools::install_version("shiny", "1.0.5") and devtools::install_version("httpuv", "1.3.6")

[wch]

Can you try installing the development version of httpuv? I believe that rstudio/httpuv#153 (which was merged) should fix it..

You can install with:

devtools::install_github("rstudio/httpuv")

[ksavin]

Winston, that solved it. Much appreciated.
httpuv output (is it more verbose in development version?)
Listening on http://127.0.0.1:4435 SEND {"config":{"workerId":"","sessionId":"558e66e215dcc1c9c45f1e92a9b15480","user":null}} RECV {"method":"init","data":{".clientdata_pixelratio":1.2,".clientdata_url_protocol":"http:",".clientdata_url_hostname":"devus1fdp01",".clientdata_url_port":"8787",".clientdata_url_pathname":"/p/4435/",".clientdata_url_search":"",".clientdata_url_hash_initial":"",".clientdata_url_hash":"",".clientdata_singletons":"",".clientdata_allowDataUriScheme":true}} SEND {"errors":[],"values":[],"inputMessages":[]}

Joe, apologies for not getting back for so long. I tried rolling back before opening the thread by getting binaries of Shiny and dependencies from CRAN archive, but I guess, I did not get the right version combinations. After installing the ones you've suggested, I get the following error:
Error : "_httpuv_decodeURIComponent" not available for .Call() for package "httpuv"

Session info:
`R version 3.4.3 (2017-11-30)
Platform: x86_64-redhat-linux-gnu (64-bit)
Running under: CentOS Linux 7 (Core)

Matrix products: default
BLAS/LAPACK: /usr/lib64/R/lib/libRblas.so

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

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

other attached packages:
[1] shiny_1.0.5

loaded via a namespace (and not attached):
[1] compiler_3.4.3 R6_2.2.2 htmltools_0.3.6 tools_3.4.3 yaml_2.1.18
[6] Rcpp_0.12.17 digest_0.6.15 xtable_1.8-2 httpuv_1.3.6 mime_0.5 `

R studio server version 1.1.442