Dear list,
It seems that something changed between R 4.2.3 and R 4.3 (tested with 4.3.2)
that broke the Tcl socket server. Here is a reproducible example:
- R process #1 (Tcl socket server):
library(tcltk)
cmd <- r"(
proc accept {chan addr port} { ;# Make a proc to accept connections
puts "$addr:$port says [gets $chan]" ;# Receive a string
puts $chan goodbye ;# Send a string
close $chan ;# Close the socket (automatically
flushes)
} ;#
socket -server accept 12345 ;# Create a server socket)"
.Tcl(cmd)
- R process #2 (socket client):
con <- socketConnection(host = "localhost", port = 12345, blocking = FALSE)
writeLines("Hello, world!", con) # Should print something in R #1 stdout
readLines(con) # Should receive "goodbye"
close(con)
When R process #1 is R 4.2.3, it works as expected (whatever version of R #2).
When R process #1 is R 4.3.2, nothing is sent or received through the socket
apparently, but no error is issued and process #2 seems to be able to connect
to the socket.
I am stuck with this. Thanks in advance for help.
Regards,
Philippe
> .Tcl("puts [info patchlevel]")
8.6.13
<Tcl>
> sessionInfo()
R version 4.3.2 (2023-10-31)
Platform: aarch64-apple-darwin20 (64-bit)
Running under: macOS Sonoma 14.2.1
Matrix products: default
BLAS:
/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK:
/Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/lib/libRlapack.dylib;
LAPACK version 3.11.0
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
time zone: Europe/Brussels
tzcode source: internal
attached base packages:
[1] tcltk stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_4.3.2 tools_4.3.2 glue_1.7.0
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