| % File src/library/base/man/socketSelect.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2007 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{socketSelect} |
| \alias{socketSelect} |
| \title{Wait on Socket Connections} |
| \usage{ |
| socketSelect(socklist, write = FALSE, timeout = NULL) |
| } |
| \arguments{ |
| \item{socklist}{list of open socket connections} |
| \item{write}{logical. If \code{TRUE} wait for corresponding socket to |
| become available for writing; otherwise wait for it to become |
| available for reading.} |
| \item{timeout}{numeric or \code{NULL}. Time in seconds to wait for a |
| socket to become available; \code{NULL} means wait |
| indefinitely.} |
| } |
| \description{ |
| Waits for the first of several socket connections to become available. |
| } |
| \value{Logical the same length as \code{socklist} indicating |
| whether the corresponding socket connection is available for |
| output or input, depending on the corresponding value of \code{write}. |
| } |
| \details{ |
| The values in \code{write} are recycled if necessary to make up a |
| logical vector the same length as \code{socklist}. Socket connections |
| can appear more than once in \code{socklist}; this can be useful if |
| you want to determine whether a socket is available for reading or |
| writing. |
| } |
| \examples{ |
| \dontrun{ |
| ## test whether socket connection s is available for writing or reading |
| socketSelect(list(s, s), c(TRUE, FALSE), timeout = 0) |
| } |
| } |
| \keyword{connection} |