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Add randomPort function, and add quiet option for startServer #234

merged 4 commits into from Aug 30, 2019


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wch commented Aug 28, 2019

Closes #194, closes #233. The quiet option suppresses messages that are normally printed to console (and can't be intercepted with capture.output).

Update: This PR now adds a new function, randomPort.

Testing notes. The code below should have the behavior as described.

port <- 5001
# Start server
s <- startServer("", port, list())

# Should print out "createTcpServer: address already in use", and throw an error
startServer("", port, list())

# Should throw error only (and not print "createTcpServer: address already in use")
startServer("", port, list(), quiet = TRUE)

# Should print "createTcpServer: address already in use" and return NULL
  startServer("", port, list()),
  error = function(e) {}

# Should just print NULL
  startServer("", port, list(), quiet = TRUE),
  error = function(e) {}

# Should return a random open port

# Should return 5002 (because 5001 is already taken)
randomPort(min = port, max = port + 1)
@wch wch requested a review from jcheng5 Aug 28, 2019

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jcheng5 commented Aug 29, 2019

@wch Did you want this in the upcoming release of httpuv? Or the next one?


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wch commented Aug 30, 2019

I was hoping to get it in this release. Actually, it might make sense to add in some code that finds an available port, as described in rstudio/shiny#2562.

@wch wch changed the title Add quiet option for startServer Add randomPort function, and add quiet option for startServer Aug 30, 2019
@wch wch force-pushed the wch-start-quiet branch from 4321523 to 19b6d36 Aug 30, 2019
R/random_port.R Show resolved Hide resolved
@wch wch merged commit f4d57a0 into master Aug 30, 2019
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@wch wch deleted the wch-start-quiet branch Aug 30, 2019
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