Shiny: ERROR: [uv_write] broken pipe (shiny 1.3.0)
Since the upgrade to shiny 1.3.0 I am sometimes getting the following error msg:
ERROR: [uv_write] broken pipe
The app still loads and doesn't break but also it seems to be much less performant than with version 1.2.0.
Unfortunately I wasn't able to systematically reproduce this error with a small reprex. Also with my full app the error just appears sometimes, and sometimes multiple times in a row.
Listening on http://127.0.0.1:6462
ERROR: [uv_write] broken pipe
ERROR: [uv_write] broken pipe
trafficonese
All 31 comments
Just running it locally on your computer, it's slower? Is the source to your app publicly available, so we can try to repro?
jcheng5
on 8 Apr 2019
Yes I just ran it locally for now, I didn't want to upload to our server as performance is already an issue.
Unfortunately it is not publicly available.
I tried to create some small apps to reproduce the error without success.
But I could attach my sessionInfo, if that would help?
trafficonese
on 8 Apr 2019
Yes, can you please include session info? Better if you use the sessioninfo package, as in:
sessioninfo::session_info()
wch
on 8 Apr 2019
Session info
setting value
version R version 3.5.2 (2018-12-20)
os Windows >= 8 x64
system x86_64, mingw32
ui RStudio
language (EN)
collate German_Germany.1252
ctype German_Germany.1252
tz Europe/Berlin
date 2019-04-08
Packages
```
package * version date lib source
assertthat 0.2.0 2017-04-11 [1] CRAN (R 3.5.1)
bit 1.1-14 2018-05-29 [1] CRAN (R 3.5.0)
bit64 0.9-7 2017-05-08 [1] CRAN (R 3.5.0)
blob 1.1.1 2018-03-25 [1] CRAN (R 3.5.1)
cli 1.0.1 2018-09-25 [1] CRAN (R 3.5.1)
colorspace 1.4-1 2019-03-18 [1] CRAN (R 3.5.3)
config * 0.3 2018-03-27 [1] CRAN (R 3.5.2)
crayon 1.3.4 2017-09-16 [1] CRAN (R 3.5.1)
crosstalk 1.0.0 2016-12-21 [1] CRAN (R 3.5.1)
data.table * 1.12.0 2019-01-13 [1] CRAN (R 3.5.2)
DBI * 1.0.0 2018-05-02 [1] CRAN (R 3.5.1)
dbplyr 1.3.0 2019-01-09 [1] CRAN (R 3.5.2)
digest 0.6.18 2018-10-10 [1] CRAN (R 3.5.2)
dplyr 0.8.0.1 2019-02-15 [1] CRAN (R 3.5.2)
DT * 0.5 2018-11-05 [1] CRAN (R 3.5.2)
ggplot2 * 3.1.0 2018-10-25 [1] CRAN (R 3.5.2)
glue 1.3.0 2018-07-17 [1] CRAN (R 3.5.1)
gtable 0.2.0 2016-02-26 [1] CRAN (R 3.5.1)
hms 0.4.2 2018-03-10 [1] CRAN (R 3.5.1)
htmltools 0.3.6 2017-04-28 [1] CRAN (R 3.5.1)
htmlwidgets 1.3 2018-09-30 [1] CRAN (R 3.5.1)
httpuv 1.5.1 2019-04-05 [1] CRAN (R 3.5.3)
httr 1.4.0 2018-12-11 [1] CRAN (R 3.5.2)
jsonlite 1.6 2018-12-07 [1] CRAN (R 3.5.2)
later 0.8.0 2019-02-11 [1] CRAN (R 3.5.2)
lazyeval 0.2.1 2017-10-29 [1] CRAN (R 3.5.1)
lubridate * 1.7.4 2018-04-11 [1] CRAN (R 3.5.1)
magrittr 1.5 2014-11-22 [1] CRAN (R 3.5.1)
mime 0.6 2018-10-05 [1] CRAN (R 3.5.2)
munsell 0.5.0 2018-06-12 [1] CRAN (R 3.5.1)
pillar 1.3.1 2018-12-15 [1] CRAN (R 3.5.2)
pkgconfig 2.0.2 2018-08-16 [1] CRAN (R 3.5.1)
plotly * 4.8.0.9000 2019-03-19 [1] local
plyr 1.8.4 2016-06-08 [1] CRAN (R 3.5.1)
pool * 0.1.4.2 2019-01-07 [1] CRAN (R 3.5.2)
promises 1.0.1 2018-04-13 [1] CRAN (R 3.5.1)
purrr 0.3.0 2019-01-27 [1] CRAN (R 3.5.2)
R6 2.4.0 2019-02-14 [1] CRAN (R 3.5.2)
Rcpp 1.0.1 2019-03-17 [1] CRAN (R 3.5.3)
rhandsontable * 0.3.7 2019-04-05 [1] local
rjson * 0.2.20 2018-06-08 [1] CRAN (R 3.5.0)
rlang 0.3.4 2019-04-07 [1] CRAN (R 3.5.3)
RPostgres * 1.1.1.9002 2019-03-12 [1] local
rstudioapi 0.9.0 2019-01-09 [1] CRAN (R 3.5.2)
scales 1.0.0 2018-08-09 [1] CRAN (R 3.5.1)
sessioninfo 1.1.1 2018-11-05 [1] CRAN (R 3.5.3)
shiny * 1.3.0 2019-04-07 [1] CRAN (R 3.5.3)
shinycssloaders * 0.2.0 2019-01-31 [1] Github (andrewsali/shinycssloaders@8779ff0)
shinyjqui * 0.3.2.9000 2019-03-22 [1] Github (yang-tang/shinyjqui@2313aed)
shinyjs * 1.0 2018-01-08 [1] CRAN (R 3.5.1)
shinyTree * 0.2.6 2019-04-08 [1] Github (trafficonese/shinyTreeSG@e48e61a)
shinyWidgets * 0.4.8 2019-03-18 [1] CRAN (R 3.5.3)
stringi 1.3.1 2019-02-13 [1] CRAN (R 3.5.2)
stringr 1.4.0 2019-02-10 [1] CRAN (R 3.5.2)
tibble 2.0.1 2019-01-12 [1] CRAN (R 3.5.2)
tidyr 0.8.2 2018-10-28 [1] CRAN (R 3.5.2)
tidyselect 0.2.5 2018-10-11 [1] CRAN (R 3.5.2)
vdefuncs1 * 0.1.0 2019-04-08 [1] local
viridisLite 0.3.0 2018-02-01 [1] CRAN (R 3.5.1)
withr 2.1.2 2018-03-15 [1] CRAN (R 3.5.1)
xtable 1.8-3 2018-08-29 [1] CRAN (R 3.5.1)
yaml 2.2.0 2018-07-25 [1] CRAN (R 3.5.1)
```
trafficonese
on 8 Apr 2019
What version of RStudio? Are you using the RStudio browser window, or an external browser, and if the latter, which browser and version?
Thanks!
jcheng5
on 8 Apr 2019
RStudio Version 1.1.463
I am using Firefox Quantum 66.0.2 (64-Bit)
trafficonese
on 8 Apr 2019
Can you see if it's also slow in Chrome? (Not saying that's an acceptable workaround 😅, just looking for clues)
jcheng5
on 8 Apr 2019
Yes it is similarly slow in Chrome.
"Interestingly" it is not even working in IE or Edge, as it says Plotly is undefined.
I am using htmlTemplate("filename", document_ = TRUE) to create my ui.
trafficonese
on 8 Apr 2019
@trafficonese Can you try removing all your packages and then reinstalling them? I hope that's not too much work.
wch
on 8 Apr 2019
@trafficonese Would you be open to doing a screenshare session with some members of our team? We'd _really_ like to get to the bottom of this! If so, you can email me at [email protected].
jcheng5
on 8 Apr 2019
@nteetor Are you seeing something similar? (uv_write errors introduced with Shiny 1.3.0 or httpuv 1.5.1, and/or slowness?)
jcheng5
on 8 Apr 2019
I was seeing a uv file descriptor error message, but have now reinstalled shiny 1.3.0 along with httpuv 1.5.1 and am no longer seeing the message.
nteetor
on 8 Apr 2019
I am seeing my error again. I apologize it's not exactly the same, but does seem to be libuv related.
ERROR: [uv_write] bad file descriptor
nteetor
on 9 Apr 2019
Just adding my $0.02. It might help. I also had the "ERROR: [uv_write] broken pipe" as well.
I had a error message in the Web console similar to that one:
https://developer.mozilla.org/en-US/docs/Tools/Debugger/Source_map_errors
Adding the .js file from the the error message in the mentioned location seems to have solve the issue.
(A lot of things broke for me when moving from 1.2.0 to 1.3.0 but I managed to fix most issues by moving some javascript around)
2005m
on 9 Apr 2019
@2005m what else broke for you? And can you tell us the exact source map error?
jcheng5
on 9 Apr 2019
Not exactly sure what is the source of the map error...
I remember an another error where a html page was not rendering correctly anymore.
I was calling it like this:
htmlTemplate('www/html/loginPage.html')
my javascripts were in the folder www/js, and I had to move them under www/html in order for them to be "found" by the App and html.
2005m
on 9 Apr 2019
@nteetor Can you provide the output of sessioninfo::session_info()?
wch
on 9 Apr 2019
@2005m If you can send us a reproducible example (whether minimal or very un-minimal!) it would be incredibly helpful!
jcheng5
on 9 Apr 2019
Sure thing
─ Session info ─────────────────────────────────
setting value version R version 3.5.1 (2018-07-02) os macOS High Sierra 10.13.6 system x86_64, darwin15.6.0 ui RStudio language (EN) collate en_US.UTF-8 ctype en_US.UTF-8 tz America/New_York date 2019-04-09
─ Packages ─────────────────────────────────────
! package * version date lib source
assertthat 0.2.1 2019-03-21 [1] CRAN (R 3.5.1)
backports 1.1.3 2018-12-14 [1] CRAN (R 3.5.0)
broom 0.5.1 2018-12-05 [1] CRAN (R 3.5.0)
callr 3.1.1 2018-12-21 [1] CRAN (R 3.5.0)
cli 1.1.0 2019-03-19 [1] CRAN (R 3.5.1)
crayon 1.3.4 2017-09-16 [1] CRAN (R 3.5.0)
crosstalk 1.0.0 2016-12-21 [1] CRAN (R 3.5.0)
curl 3.3 2019-01-10 [1] CRAN (R 3.5.2)
data.table 1.12.0 2019-01-13 [1] CRAN (R 3.5.2)
desc 1.2.0 2018-05-01 [1] CRAN (R 3.5.0)
devtools 2.0.1 2018-10-26 [1] CRAN (R 3.5.1)
digest 0.6.18 2018-10-10 [1] CRAN (R 3.5.0)
dplyr 0.8.0.1 2019-02-15 [1] CRAN (R 3.5.2)
DT 0.5 2018-11-05 [1] CRAN (R 3.5.0)
fansi 0.4.0 2018-10-05 [1] CRAN (R 3.5.0)
fs 1.2.6 2018-08-23 [1] CRAN (R 3.5.0)
generics 0.0.2 2018-11-29 [1] CRAN (R 3.5.0)
glue 1.3.1 2019-03-12 [1] CRAN (R 3.5.1)
VP heat * 3.1.1 2019-03-26 [?] local
heatdata 0.0.1 2019-04-05 [1] Github (-redacted by me-)
heatmeasures 0.0.1 2019-04-05 [1] Github (-redacted by me-)
highcharter 0.7.0 2019-01-15 [1] CRAN (R 3.5.2)
htmltools 0.3.6 2017-04-28 [1] CRAN (R 3.5.0)
htmlwidgets 1.3 2018-09-30 [1] CRAN (R 3.5.0)
httpuv 1.5.1 2019-04-05 [1] CRAN (R 3.5.2)
igraph 1.2.4 2019-02-13 [1] CRAN (R 3.5.2)
jsonlite 1.6 2018-12-07 [1] CRAN (R 3.5.0)
later 0.8.0 2019-02-11 [1] CRAN (R 3.5.2)
lattice 0.20-38 2018-11-04 [1] CRAN (R 3.5.0)
lubridate 1.7.4 2018-04-11 [1] CRAN (R 3.5.0)
magrittr 1.5 2014-11-22 [1] CRAN (R 3.5.0)
memoise 1.1.0 2017-04-21 [1] CRAN (R 3.5.0)
mime 0.6 2018-10-05 [1] CRAN (R 3.5.0)
nlme 3.1-137 2018-04-07 [1] CRAN (R 3.5.1)
packrat 0.5.0 2018-11-14 [1] CRAN (R 3.5.0)
pillar 1.3.1 2018-12-15 [1] CRAN (R 3.5.0)
pkgbuild 1.0.2 2018-10-16 [1] CRAN (R 3.5.0)
pkgconfig 2.0.2 2018-08-16 [1] CRAN (R 3.5.0)
pkgload 1.0.2 2018-10-29 [1] CRAN (R 3.5.0)
prettyunits 1.0.2 2015-07-13 [1] CRAN (R 3.5.0)
processx 3.2.1 2018-12-05 [1] CRAN (R 3.5.0)
promises 1.0.1 2018-04-13 [1] CRAN (R 3.5.0)
ps 1.3.0 2018-12-21 [1] CRAN (R 3.5.0)
purrr 0.3.2 2019-03-15 [1] CRAN (R 3.5.2)
quantmod 0.4-13 2018-04-13 [1] CRAN (R 3.5.0)
R6 2.4.0 2019-02-14 [1] CRAN (R 3.5.2)
Rcpp 1.0.1 2019-03-17 [1] CRAN (R 3.5.2)
remotes 2.0.2 2018-10-30 [1] CRAN (R 3.5.0)
rlang 0.3.3 2019-03-29 [1] CRAN (R 3.5.1)
rlist 0.4.6.1 2016-04-04 [1] CRAN (R 3.5.0)
rprojroot 1.3-2 2018-01-03 [1] CRAN (R 3.5.0)
rstudioapi 0.9.0 2019-01-09 [1] CRAN (R 3.5.2)
sessioninfo 1.1.1 2018-11-05 [1] CRAN (R 3.5.0)
shiny * 1.3.0 2019-04-07 [1] CRAN (R 3.5.2)
stringi 1.3.1 2019-02-13 [1] CRAN (R 3.5.2)
stringr 1.4.0 2019-02-10 [1] CRAN (R 3.5.2)
testthat 2.0.1 2018-10-13 [1] CRAN (R 3.5.0)
tibble 2.1.1 2019-03-16 [1] CRAN (R 3.5.2)
tidyr 0.8.2 2018-10-28 [1] CRAN (R 3.5.0)
tidyselect 0.2.5 2018-10-11 [1] CRAN (R 3.5.0)
TTR 0.23-4 2018-09-20 [1] CRAN (R 3.5.0)
usethis 1.4.0 2018-08-14 [1] CRAN (R 3.5.0)
utf8 1.1.4 2018-05-24 [1] CRAN (R 3.5.0)
viridisLite 0.3.0 2018-02-01 [1] CRAN (R 3.5.0)
whisker 0.3-2 2013-04-28 [1] CRAN (R 3.5.0)
withr 2.1.2 2018-03-15 [1] CRAN (R 3.5.0)
xtable 1.8-3 2018-08-29 [1] CRAN (R 3.5.0)
xts 0.11-2 2018-11-05 [1] CRAN (R 3.5.0)
yaml 2.2.0 2018-07-25 [1] CRAN (R 3.5.0)
yonder 0.0.5 2019-04-05 [1] local
zoo 1.8-4 2018-09-19 [1] CRAN (R 3.5.0)
nteetor
on 9 Apr 2019
For future reference: the performance issue that @trafficonese encountered is due to #2375. It's possible that the [uv_write] errors are happening because of the performance issue, but we don't know for sure at this point.
wch
on 10 Apr 2019
Unfortunately, the [uv_write] error still appear sometimes with #2376 installed.
trafficonese
on 11 Apr 2019
Hi @trafficonese, can you also try with devtools::install_github("rstudio/[email protected]")?
cpsievert
on 11 Apr 2019
I installed already RStudio Version 1.3.109 from here, but I see there's already a newer version. Should I also try with 1.3.112?
trafficonese
on 11 Apr 2019
Hopefully the RStudio version wont matter -- in fact, it might be better to use the stable release
https://www.rstudio.com/products/rstudio/download/
If you can still reproduce with these versions of shiny and httpuv, then we still have more sleuthing to do
devtools::install_github("rstudio/httpuv")
devtools::install_github("rstudio/[email protected]")
Oh sry, I was misreading the package. I just installed the 2 new versions, but unfortunately the error still appeared.
> packageVersion("httpuv")
[1] ‘1.5.1.9000’
> packageVersion("shiny")
[1] ‘1.3.1’
Listening on http://127.0.0.1:5115
ERROR: [uv_write] broken pipe
ERROR: [uv_write] broken pipe
ERROR: [uv_write] broken pipe
trafficonese
on 11 Apr 2019
@trafficonese Could you please post your sessioninfo::session_info() output?
schloerke
on 11 Apr 2019
Sure.
- Session info
setting value
version R version 3.5.2 (2018-12-20)
os Windows 10 x64
system x86_64, mingw32
ui RStudio
language (EN)
collate German_Germany.1252
ctype German_Germany.1252
tz Europe/Berlin
date 2019-04-11
- Packages
package * version date lib source
assertthat 0.2.0 2017-04-11 [1] CRAN (R 3.5.1)
bit 1.1-14 2018-05-29 [1] CRAN (R 3.5.0)
bit64 0.9-7 2017-05-08 [1] CRAN (R 3.5.0)
blob 1.1.1 2018-03-25 [1] CRAN (R 3.5.1)
cli 1.0.1 2018-09-25 [1] CRAN (R 3.5.1)
colorspace 1.4-1 2019-03-18 [1] CRAN (R 3.5.3)
config * 0.3 2018-03-27 [1] CRAN (R 3.5.2)
crayon 1.3.4 2017-09-16 [1] CRAN (R 3.5.1)
crosstalk 1.0.0 2016-12-21 [1] CRAN (R 3.5.1)
data.table * 1.12.0 2019-01-13 [1] CRAN (R 3.5.2)
DBI * 1.0.0 2018-05-02 [1] CRAN (R 3.5.1)
dbplyr 1.3.0 2019-01-09 [1] CRAN (R 3.5.2)
digest 0.6.18 2018-10-10 [1] CRAN (R 3.5.2)
dplyr 0.8.0.1 2019-02-15 [1] CRAN (R 3.5.2)
DT * 0.5 2018-11-05 [1] CRAN (R 3.5.2)
ggplot2 * 3.1.0 2018-10-25 [1] CRAN (R 3.5.2)
glue 1.3.0 2018-07-17 [1] CRAN (R 3.5.1)
gtable 0.2.0 2016-02-26 [1] CRAN (R 3.5.1)
hms 0.4.2 2018-03-10 [1] CRAN (R 3.5.1)
htmltools 0.3.6 2017-04-28 [1] CRAN (R 3.5.1)
htmlwidgets 1.3 2018-09-30 [1] CRAN (R 3.5.1)
httpuv 1.5.1.9000 2019-04-11 [1] Github (rstudio/httpuv@da0a7ef)
httr 1.4.0 2018-12-11 [1] CRAN (R 3.5.2)
jsonlite 1.6 2018-12-07 [1] CRAN (R 3.5.2)
later 0.8.0 2019-02-11 [1] CRAN (R 3.5.2)
lazyeval 0.2.1 2017-10-29 [1] CRAN (R 3.5.1)
lubridate * 1.7.4 2018-04-11 [1] CRAN (R 3.5.1)
magrittr 1.5 2014-11-22 [1] CRAN (R 3.5.1)
mime 0.6 2018-10-05 [1] CRAN (R 3.5.2)
munsell 0.5.0 2018-06-12 [1] CRAN (R 3.5.1)
pillar 1.3.1 2018-12-15 [1] CRAN (R 3.5.2)
pkgconfig 2.0.2 2018-08-16 [1] CRAN (R 3.5.1)
plotly * 4.8.0.9000 2019-04-11 [1] Github (trafficonese/plotly_mini@7ea70b9)
plyr 1.8.4 2016-06-08 [1] CRAN (R 3.5.1)
pool * 0.1.4.2 2019-01-07 [1] CRAN (R 3.5.2)
promises 1.0.1 2018-04-13 [1] CRAN (R 3.5.1)
purrr 0.3.0 2019-01-27 [1] CRAN (R 3.5.2)
R6 2.4.0 2019-02-14 [1] CRAN (R 3.5.2)
Rcpp 1.0.1 2019-03-17 [1] CRAN (R 3.5.3)
rhandsontable * 0.3.7 2019-04-10 [1] Github (trafficonese/rhandsontable@df97cdc)
rjson 0.2.20 2018-06-08 [1] CRAN (R 3.5.0)
rlang 0.3.4 2019-04-07 [1] CRAN (R 3.5.3)
RPostgres * 1.1.1.9002 2019-04-11 [1] Github (r-dbi/RPostgres@11c33f1)
rstudioapi 0.9.0 2019-01-09 [1] CRAN (R 3.5.2)
scales 1.0.0 2018-08-09 [1] CRAN (R 3.5.1)
sessioninfo 1.1.1 2018-11-05 [1] CRAN (R 3.5.3)
shiny * 1.3.1 2019-04-11 [1] Github (rstudio/shiny@de4c756)
shinycssloaders * 0.2.0 2019-01-31 [1] Github (andrewsali/shinycssloaders@8779ff0)
shinyjqui * 0.3.2.9000 2019-03-22 [1] Github (yang-tang/shinyjqui@2313aed)
shinyjs * 1.0 2018-01-08 [1] CRAN (R 3.5.1)
shinyTree * 0.2.6 2019-04-10 [1] local
shinyWidgets * 0.4.8 2019-03-18 [1] CRAN (R 3.5.3)
stringi 1.3.1 2019-02-13 [1] CRAN (R 3.5.2)
stringr 1.4.0 2019-02-10 [1] CRAN (R 3.5.2)
tibble 2.0.1 2019-01-12 [1] CRAN (R 3.5.2)
tidyr 0.8.2 2018-10-28 [1] CRAN (R 3.5.2)
tidyselect 0.2.5 2018-10-11 [1] CRAN (R 3.5.2)
vdefuncs1 * 0.1.0 2019-04-09 [1] local
viridisLite 0.3.0 2018-02-01 [1] CRAN (R 3.5.1)
withr 2.1.2 2018-03-15 [1] CRAN (R 3.5.1)
xtable 1.8-3 2018-08-29 [1] CRAN (R 3.5.1)
yaml 2.2.0 2018-07-25 [1] CRAN (R 3.5.1)
trafficonese
on 11 Apr 2019
I managed to build a small Gist example, where the error appears.
You probably have to start it several times, untill that error appears though.
It should come right after the startup, so no interaction with the app is needed.
The sessioninfo is also included there.
shiny::runGist("https://gist.github.com/trafficonese/13d615e821c34cdcbcc553531c4707c9")
trafficonese
on 16 Apr 2019
Just for Reference: I also have this Problem. It is a pretty large app, where the future is used to load data from a googlesheet.
Listening on http://127.0.0.1:5064
ERROR: [uv_write] broken pipe
Shiny 1.3.2
httpuv 1.5.1
R version 3.3.3 (2017-03-06)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
locale:
[1] LC_COLLATE=German_Germany.1252 LC_CTYPE=German_Germany.1252 LC_MONETARY=German_Germany.1252
[4] LC_NUMERIC=C LC_TIME=German_Germany.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] mcdsupportshiny_0.1.0.9999 shiny_1.3.2 data.table_1.12.2
loaded via a namespace (and not attached):
[1] Rcpp_1.0.1 crayon_1.3.4 digest_0.6.18 later_0.8.0 mime_0.6 R6_2.4.0 xtable_1.8-4
[8] magrittr_1.5 rstudioapi_0.10 promises_1.0.1 DT_0.6 tools_3.3.3 htmlwidgets_1.3 crosstalk_1.0.0
[15] httpuv_1.5.1 yaml_2.2.0 htmltools_0.3.6
JulianBo
on 3 Jun 2019
@alandipert and I did some investigation of this issue, and we found that it happens when a httpuv app's onHeaders function schedules data to be written, after the socket has already closed.
To reproduce, run this app. If you wait 3 seconds, the browser will show "Hello headers!". If you close the browser window (or reload it) in less than 3 seconds, then the server will print out ERROR: [uv_write] bad file descriptor on Mac, and ERROR: [uv_write] broken pipe on Windows.
library(httpuv)
s <- startServer("0.0.0.0", 5000,
list(
onHeaders = function(req) {
Sys.sleep(3)
list(
status = 200L,
headers = list('Content-Type' = 'text/html'),
body = "Hello headers!"
)
}
)
)
The line of code that generates that message is at https://github.com/rstudio/httpuv/blob/605f668/src/httpresponse.cpp#L107
When this error happens, it is handled correctly, and everything gets cleaned up properly. So I think the problem is just that the error message is unnecessarily scary, and probably not needed at all.
wch
on 21 Jun 2019
Closing because we have a PR at rstudio/httpuv#223 (and it is in a different repository).
wch
on 21 Jun 2019
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Most helpful comment
@alandipert and I did some investigation of this issue, and we found that it happens when a httpuv app's
onHeadersfunction schedules data to be written, after the socket has already closed.To reproduce, run this app. If you wait 3 seconds, the browser will show "Hello headers!". If you close the browser window (or reload it) in less than 3 seconds, then the server will print out
ERROR: [uv_write] bad file descriptoron Mac, andERROR: [uv_write] broken pipeon Windows.The line of code that generates that message is at https://github.com/rstudio/httpuv/blob/605f668/src/httpresponse.cpp#L107
When this error happens, it is handled correctly, and everything gets cleaned up properly. So I think the problem is just that the error message is unnecessarily scary, and probably not needed at all.