path: root/tests/socket.test

# Commands tested in this file: socket.
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
#
# Copyright (c) 1994-1996 Sun Microsystems, Inc.
# Copyright (c) 1998-2000 Ajuba Solutions.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: socket.test,v 1.26.2.4 2004/10/28 04:16:22 dgp Exp $

# Running socket tests with a remote server:
# ------------------------------------------
# 
# Some tests in socket.test depend on the existence of a remote server to
# which they connect. The remote server must be an instance of tcltest and it
# must run the script found in the file "remote.tcl" in this directory. You
# can start the remote server on any machine reachable from the machine on
# which you want to run the socket tests, by issuing:
# 
#     tcltest remote.tcl -port 2048	# Or choose another port number.
# 
# If the machine you are running the remote server on has several IP
# interfaces, you can choose which interface the server listens on for
# connections by specifying the -address command line flag, so:
# 
#     tcltest remote.tcl -address your.machine.com
# 
# These options can also be set by environment variables. On Unix, you can
# type these commands to the shell from which the remote server is started:
# 
#     shell% setenv serverPort 2048
#     shell% setenv serverAddress your.machine.com
# 
# and subsequently you can start the remote server with:
# 
#     tcltest remote.tcl
# 
# to have it listen on port 2048 on the interface your.machine.com.
#     
# When the server starts, it prints out a detailed message containing its
# configuration information, and it will block until killed with a Ctrl-C.
# Once the remote server exists, you can run the tests in socket.test with
# the server by setting two Tcl variables:
# 
#     % set remoteServerIP <name or address of machine on which server runs>
#     % set remoteServerPort 2048
# 
# These variables are also settable from the environment. On Unix, you can:
# 
#     shell% setenv remoteServerIP machine.where.server.runs
#     shell% senetv remoteServerPort 2048
# 
# The preamble of the socket.test file checks to see if the variables are set
# either in Tcl or in the environment; if they are, it attempts to connect to
# the server. If the connection is successful, the tests using the remote
# server will be performed; otherwise, it will attempt to start the remote
# server (via exec) on platforms that support this, on the local host,
# listening at port 2048. If all fails, a message is printed and the tests
# using the remote server are not performed.

package require tcltest 2
namespace import -force ::tcltest::*

# Some tests require the testthread and exec commands
testConstraint testthread [llength [info commands testthread]]
testConstraint exec [llength [info commands exec]]

# If remoteServerIP or remoteServerPort are not set, check in the
# environment variables for externally set values.
#

if {![info exists remoteServerIP]} {
    if {[info exists env(remoteServerIP)]} {
	set remoteServerIP $env(remoteServerIP)
    }
}
if {![info exists remoteServerPort]} {
    if {[info exists env(remoteServerIP)]} {
	set remoteServerPort $env(remoteServerPort)
    } else {
        if {[info exists remoteServerIP]} {
	    set remoteServerPort 2048
        }
    }
}

#
# Check if we're supposed to do tests against the remote server
#

set doTestsWithRemoteServer 1
if {![info exists remoteServerIP] && ($tcl_platform(platform) != "macintosh")} {
    set remoteServerIP 127.0.0.1
}
if {($doTestsWithRemoteServer == 1) && (![info exists remoteServerPort])} {
    set remoteServerPort 2048
}

# Attempt to connect to a remote server if one is already running. If it
# is not running or for some other reason the connect fails, attempt to
# start the remote server on the local host listening on port 2048. This
# is only done on platforms that support exec (i.e. not on the Mac). On
# platforms that do not support exec, the remote server must be started
# by the user before running the tests.

set remoteProcChan ""
set commandSocket ""
if {$doTestsWithRemoteServer} {
    catch {close $commandSocket}
    if {[catch {set commandSocket [socket $remoteServerIP \
						$remoteServerPort]}] != 0} {
	if {[info commands exec] == ""} {
	    set noRemoteTestReason "can't exec"
	    set doTestsWithRemoteServer 0
	} else {
	    set remoteServerIP 127.0.0.1
	    # Be *extra* careful in case this file is sourced from
	    # a directory other than the current one...
	    set remoteFile [file join [pwd] [file dirname [info script]] \
		    remote.tcl]
	    if {[catch {set remoteProcChan \
				[open "|[list [interpreter] $remoteFile \
					-serverIsSilent \
					-port $remoteServerPort \
					-address $remoteServerIP]" \
					w+]} \
		   msg] == 0} {
		after 1000
		if {[catch {set commandSocket [socket $remoteServerIP \
				$remoteServerPort]} msg] == 0} {
		    fconfigure $commandSocket -translation crlf -buffering line
		} else {
		    set noRemoteTestReason $msg
		    set doTestsWithRemoteServer 0
		}
	    } else {
		set noRemoteTestReason "$msg [interpreter]"
		set doTestsWithRemoteServer 0
	    }
	}
    } else {
	fconfigure $commandSocket -translation crlf -buffering line
    }
}

# Some tests are run only if we are doing testing against a remote server.
set ::tcltest::testConstraints(doTestsWithRemoteServer) $doTestsWithRemoteServer
if {$doTestsWithRemoteServer == 0} {
    if {[string first s $::tcltest::verbose] != -1} {
    	puts "Skipping tests with remote server. See tests/socket.test for"
	puts "information on how to run remote server."
	puts "Reason for not doing remote tests: $noRemoteTestReason"
    }
}

#
# If we do the tests, define a command to send a command to the
# remote server.
#

if {$doTestsWithRemoteServer == 1} {
    proc sendCommand {c} {
	global commandSocket

	if {[eof $commandSocket]} {
	    error "remote server disappeared"
	}

	if {[catch {puts $commandSocket $c} msg]} {
	    error "remote server disappaered: $msg"
	}
	if {[catch {puts $commandSocket "--Marker--Marker--Marker--"} msg]} {
	    error "remote server disappeared: $msg"
	}

	set resp ""
	while {1} {
	    set line [gets $commandSocket]
	    if {[eof $commandSocket]} {
		error "remote server disappaered"
	    }
	    if {[string compare $line "--Marker--Marker--Marker--"] == 0} {
		if {[string compare [lindex $resp 0] error] == 0} {
		    error [lindex $resp 1]
		} else {
		    return [lindex $resp 1]
		}
	    } else {
		append resp $line "\n"
	    }
	}
    }
}

test socket-1.1 {arg parsing for socket command} {socket} {
    list [catch {socket -server} msg] $msg
} {1 {no argument given for -server option}}
test socket-1.2 {arg parsing for socket command} {socket} {
    list [catch {socket -server foo} msg] $msg
} {1 {wrong # args: should be either:
socket ?-myaddr addr? ?-myport myport? ?-async? host port
socket -server command ?-myaddr addr? port}}
test socket-1.3 {arg parsing for socket command} {socket} {
    list [catch {socket -myaddr} msg] $msg
} {1 {no argument given for -myaddr option}}
test socket-1.4 {arg parsing for socket command} {socket} {
    list [catch {socket -myaddr 127.0.0.1} msg] $msg
} {1 {wrong # args: should be either:
socket ?-myaddr addr? ?-myport myport? ?-async? host port
socket -server command ?-myaddr addr? port}}
test socket-1.5 {arg parsing for socket command} {socket} {
    list [catch {socket -myport} msg] $msg
} {1 {no argument given for -myport option}}
test socket-1.6 {arg parsing for socket command} {socket} {
    list [catch {socket -myport xxxx} msg] $msg
} {1 {expected integer but got "xxxx"}}
test socket-1.7 {arg parsing for socket command} {socket} {
    list [catch {socket -myport 2522} msg] $msg
} {1 {wrong # args: should be either:
socket ?-myaddr addr? ?-myport myport? ?-async? host port
socket -server command ?-myaddr addr? port}}
test socket-1.8 {arg parsing for socket command} {socket} {
    list [catch {socket -froboz} msg] $msg
} {1 {bad option "-froboz": must be -async, -myaddr, -myport, or -server}}
test socket-1.9 {arg parsing for socket command} {socket} {
    list [catch {socket -server foo -myport 2521 3333} msg] $msg
} {1 {Option -myport is not valid for servers}}
test socket-1.10 {arg parsing for socket command} {socket} {
    list [catch {socket host 2528 -junk} msg] $msg
} {1 {wrong # args: should be either:
socket ?-myaddr addr? ?-myport myport? ?-async? host port
socket -server command ?-myaddr addr? port}}
test socket-1.11 {arg parsing for socket command} {socket} {
    list [catch {socket -server callback 2520 --} msg] $msg
} {1 {wrong # args: should be either:
socket ?-myaddr addr? ?-myport myport? ?-async? host port
socket -server command ?-myaddr addr? port}}
test socket-1.12 {arg parsing for socket command} {socket} {
    list [catch {socket foo badport} msg] $msg
} {1 {expected integer but got "badport"}}
test socket-1.13 {arg parsing for socket command} {socket} {
list [catch {socket -async -server} msg] $msg
} {1 {cannot set -async option for server sockets}}
test socket-1.14 {arg parsing for socket command} {socket} {
list [catch {socket -server foo -async} msg] $msg
} {1 {cannot set -async option for server sockets}}

set path(script) [makeFile {} script]

test socket-2.1 {tcp connection} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set timer [after 10000 "set x timed_out"]
	set f [socket -server accept 0]
	proc accept {file addr port} {
	    global x
	    set x done
            close $file
	}
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f x
    gets $f listen
    if {[catch {socket 127.0.0.1 $listen} msg]} {
        set x $msg
    } else {
        lappend x [gets $f]
        close $msg
    }
    lappend x [gets $f]
    close $f
    set x
} {ready done {}}

if [info exists port] {
    incr port
} else { 
    set port [expr 2048 + [pid]%1024]
}
test socket-2.2 {tcp connection with client port specified} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set timer [after 10000 "set x timeout"]
        set f [socket -server accept 0]
	proc accept {file addr port} {
            global x
            puts "[gets $file] $port"
            close $file
            set x done
	}
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f x
    gets $f listen
    global port
    if {[catch {socket -myport $port 127.0.0.1 $listen} sock]} {
        set x $sock
	close [socket 127.0.0.1 $listen]
	puts stderr $sock
    } else {
        puts $sock hello
	flush $sock
        lappend x [gets $f]
        close $sock
    }
    close $f
    set x
} [list ready "hello $port"]
test socket-2.3 {tcp connection with client interface specified} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set timer [after 2000 "set x done"]
        set f [socket  -server accept 2830]
	proc accept {file addr port} {
            global x
            puts "[gets $file] $addr"
            close $file
            set x done
	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f x
    if {[catch {socket -myaddr 127.0.0.1 127.0.0.1 2830} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock
        lappend x [gets $f]
        close $sock
    }
    close $f
    set x
} {ready {hello 127.0.0.1}}
test socket-2.4 {tcp connection with server interface specified} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set timer [after 2000 "set x done"]
        set f [socket -server accept -myaddr 127.0.0.1 0]
	proc accept {file addr port} {
            global x
            puts "[gets $file]"
            close $file
            set x done
	}
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f x
    gets $f listen
    if {[catch {socket 127.0.0.1 $listen} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock
        lappend x [gets $f]
        close $sock
    }
    close $f
    set x
} {ready hello}
test socket-2.5 {tcp connection with redundant server port} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set timer [after 10000 "set x timeout"]
        set f [socket -server accept 0]
	proc accept {file addr port} {
            global x
            puts "[gets $file]"
            close $file
            set x done
	}
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f x
    gets $f listen
    if {[catch {socket 127.0.0.1 $listen} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock
        lappend x [gets $f]
        close $sock
    }
    close $f
    set x
} {ready hello}
test socket-2.6 {tcp connection} {socket} {
    set status ok
    if {![catch {set sock [socket 127.0.0.1 2833]}]} {
	if {![catch {gets $sock}]} {
	    set status broken
	}
	close $sock
    }
    set status
} ok
test socket-2.7 {echo server, one line} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set timer [after 10000 "set x timeout"]
	set f [socket -server accept 0]
	proc accept {s a p} {
            fileevent $s readable [list echo $s]
	    fconfigure $s -translation lf -buffering line
        }
	proc echo {s} {
	     set l [gets $s]
             if {[eof $s]} {
                 global x
                 close $s
                 set x done
             } else {
                 puts $s $l
             }
	}
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f
    gets $f listen
    set s [socket 127.0.0.1 $listen]
    fconfigure $s -buffering line -translation lf
    puts $s "hello abcdefghijklmnop"
    after 1000
    set x [gets $s]
    close $s
    set y [gets $f]
    close $f
    list $x $y
} {{hello abcdefghijklmnop} done}
removeFile script
test socket-2.8 {echo server, loop 50 times, single connection} -constraints {socket stdio} -setup {
    set path(script) [makeFile {
	set f [socket -server accept 0]
	proc accept {s a p} {
            fileevent $s readable [list echo $s]
            fconfigure $s -buffering line
        }
	proc echo {s} {
	     global i
             set l [gets $s]
             if {[eof $s]} {
                 global x
                 close $s
                 set x done
             } else { 
	         incr i
                 puts $s $l
             }
	}
	set i 0
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	set timer [after 20000 "set x done"]
	vwait x
	after cancel $timer
	close $f
	puts "done $i"
    } script]
} -body {
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f
    gets $f listen
    set s [socket 127.0.0.1 $listen]
    fconfigure $s -buffering line
    catch {
	for {set x 0} {$x < 50} {incr x} {
	    puts $s "hello abcdefghijklmnop"
	    gets $s
	}
    }
    close $s
    catch {set x [gets $f]}
    close $f
    set x
} -cleanup {
    removeFile script
} -result {done 50}
set path(script) [makeFile {} script]
test socket-2.9 {socket conflict} {socket stdio} {
    set s [socket -server accept 0]
    file delete $path(script)
    set f [open $path(script) w]
    puts -nonewline $f "socket -server accept [lindex [fconfigure $s -sockname] 2]"
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f
    after 100
    set x [list [catch {close $f} msg]]
    regsub "\n.*$" $msg {} msg ; # cut part of the error message containing the port number
    lappend x $msg
    close $s
    set x
} {1 {couldn't open socket: address already in use}}
test socket-2.10 {close on accept, accepted socket lives} {socket} {
    set done 0
    set timer [after 20000 "set done timed_out"]
    set ss [socket -server accept 0]
    proc accept {s a p} {
	global ss
	close $ss
	fileevent $s readable "readit $s"
	fconfigure $s -trans lf
    }
    proc readit {s} {
	global done
	gets $s
	close $s
	set done 1
    }
    set cs [socket [info hostname] [lindex [fconfigure $ss -sockname] 2]]
    puts $cs hello
    close $cs
    vwait done
    after cancel $timer
    set done
} 1
test socket-2.11 {detecting new data} {socket} {
    proc accept {s a p} {
	global sock
	set sock $s
    }

    set s [socket -server accept 0]
    set sock ""
    set s2 [socket 127.0.0.1 [lindex [fconfigure $s -sockname] 2]]
    vwait sock
    puts $s2 one
    flush $s2
    after 500
    fconfigure $sock -blocking 0
    set result a:[gets $sock]
    lappend result b:[gets $sock]
    fconfigure $sock -blocking 1
    puts $s2 two
    flush $s2
    fconfigure $sock -blocking 0
    lappend result c:[gets $sock]
    fconfigure $sock -blocking 1
    close $s2
    close $s
    close $sock
    set result
} {a:one b: c:two}


test socket-3.1 {socket conflict} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set f [socket -server accept 0]
	puts ready
	puts [lindex [fconfigure $f -sockname] 2]
	gets stdin
	close $f
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r+]
    gets $f
    gets $f listen
    set x [list [catch {socket -server accept $listen} msg] \
		$msg]
    puts $f bye
    close $f
    set x
} {1 {couldn't open socket: address already in use}}
test socket-3.2 {server with several clients} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set t1 [after 30000 "set x timed_out"]
	set t2 [after 31000 "set x timed_out"]
	set t3 [after 32000 "set x timed_out"]
	set counter 0
	set s [socket -server accept 0]
	proc accept {s a p} {
	    fileevent $s readable [list echo $s]
	    fconfigure $s -buffering line
	}
	proc echo {s} {
	     global x
             set l [gets $s]
             if {[eof $s]} {
                 close $s
                 set x done
             } else {
                 puts $s $l
             }
	}
	puts ready
	puts [lindex [fconfigure $s -sockname] 2]
	vwait x
	after cancel $t1
	vwait x
	after cancel $t2
	vwait x
	after cancel $t3
	close $s
	puts $x
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r+]
    set x [gets $f]
    gets $f listen
    set s1 [socket 127.0.0.1 $listen]
    fconfigure $s1 -buffering line
    set s2 [socket 127.0.0.1 $listen]
    fconfigure $s2 -buffering line
    set s3 [socket 127.0.0.1 $listen]
    fconfigure $s3 -buffering line
    for {set i 0} {$i < 100} {incr i} {
	puts $s1 hello,s1
	gets $s1
	puts $s2 hello,s2
	gets $s2
	puts $s3 hello,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    lappend x [gets $f]
    close $f
    set x
} {ready done}

test socket-4.1 {server with several clients} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set port [gets stdin]
	set s [socket 127.0.0.1 $port]
	fconfigure $s -buffering line
	for {set i 0} {$i < 100} {incr i} {
	    puts $s hello
	    gets $s
	}
	close $s
	puts bye
	gets stdin
    }
    close $f
    set p1 [open "|[list [interpreter] $path(script)]" r+]
    fconfigure $p1 -buffering line
    set p2 [open "|[list [interpreter] $path(script)]" r+]
    fconfigure $p2 -buffering line
    set p3 [open "|[list [interpreter] $path(script)]" r+]
    fconfigure $p3 -buffering line
    proc accept {s a p} {
	fconfigure $s -buffering line
	fileevent $s readable [list echo $s]
    }
    proc echo {s} {
	global x
        set l [gets $s]
        if {[eof $s]} {
            close $s
            set x done
        } else {
            puts $s $l
        }
    }
    set t1 [after 30000 "set x timed_out"]
    set t2 [after 31000 "set x timed_out"]
    set t3 [after 32000 "set x timed_out"]
    set s [socket -server accept 0]
    set listen [lindex [fconfigure $s -sockname] 2]
    puts $p1 $listen
    puts $p2 $listen
    puts $p3 $listen
    vwait x
    vwait x
    vwait x
    after cancel $t1
    after cancel $t2
    after cancel $t3
    close $s
    set l ""
    lappend l [list p1 [gets $p1] $x]
    lappend l [list p2 [gets $p2] $x]
    lappend l [list p3 [gets $p3] $x]
    puts $p1 bye
    puts $p2 bye
    puts $p3 bye
    close $p1
    close $p2
    close $p3
    set l
} {{p1 bye done} {p2 bye done} {p3 bye done}}
test socket-4.2 {byte order problems, socket numbers, htons} {socket} {
    set x ok
    if {[catch {socket -server dodo 0x3000} msg]} {
	set x $msg
    } else {
	close $msg
    }
    set x
} ok

test socket-5.1 {byte order problems, socket numbers, htons} \
	{socket unixOnly notRoot} {
    set x {couldn't open socket: not owner}
    if {![catch {socket -server dodo 0x1} msg]} {
        set x {htons problem, should be disallowed, are you running as SU?}
	close $msg
    }
    set x
} {couldn't open socket: not owner}
test socket-5.2 {byte order problems, socket numbers, htons} {socket} {
    set x {couldn't open socket: port number too high}
    if {![catch {socket -server dodo 0x10000} msg]} {
	set x {port resolution problem, should be disallowed}
	close $msg
    }
    set x
} {couldn't open socket: port number too high}
test socket-5.3 {byte order problems, socket numbers, htons} \
	{socket unixOnly notRoot} {
    set x {couldn't open socket: not owner}
    if {![catch {socket -server dodo 21} msg]} {
	set x {htons problem, should be disallowed, are you running as SU?}
	close $msg
    }
    set x
} {couldn't open socket: not owner}

test socket-6.1 {accept callback error} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	gets stdin port
	socket 127.0.0.1 $port
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r+]
    proc bgerror args {
	global x
	set x $args
    }
    proc accept {s a p} {expr 10 / 0}
    set s [socket -server accept 0]
    puts $f [lindex [fconfigure $s -sockname] 2]
    close $f
    set timer [after 10000 "set x timed_out"]
    vwait x
    after cancel $timer
    close $s
    rename bgerror {}
    set x
} {{divide by zero}}

test socket-7.1 {testing socket specific options} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set ss [socket -server accept 0]
	proc accept args {
	    global x
	    set x done
	}
	puts ready
	puts [lindex [fconfigure $ss -sockname] 2]
	set timer [after 10000 "set x timed_out"]
	vwait x
	after cancel $timer
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f
    gets $f listen
    set s [socket 127.0.0.1 $listen]
    set p [fconfigure $s -peername]
    close $s
    close $f
    set l ""
    lappend l [string compare [lindex $p 0] 127.0.0.1]
    lappend l [string compare [lindex $p 2] $listen]
    lappend l [llength $p]
} {0 0 3}
test socket-7.2 {testing socket specific options} {socket stdio} {
    file delete $path(script)
    set f [open $path(script) w]
    puts $f {
	set ss [socket -server accept 2821]
	proc accept args {
	    global x
	    set x done
	}
	puts ready
	puts [lindex [fconfigure $ss -sockname] 2]
	set timer [after 10000 "set x timed_out"]
	vwait x
	after cancel $timer
    }
    close $f
    set f [open "|[list [interpreter] $path(script)]" r]
    gets $f
    gets $f listen
    set s [socket 127.0.0.1 $listen]
    set p [fconfigure $s -sockname]
    close $s
    close $f
    list [llength $p] \
	    [regexp {^(127\.0\.0\.1|0\.0\.0\.0)$} [lindex $p 0]] \
	    [expr {[lindex $p 2] == $listen}]
} {3 1 0}
test socket-7.3 {testing socket specific options} {socket} {
    set s [socket -server accept 0]
    set l [fconfigure $s]
    close $s
    update
    llength $l
} 14
test socket-7.4 {testing socket specific options} {socket} {
    set s [socket -server accept 0]
    proc accept {s a p} {
	global x
	set x [fconfigure $s -sockname]
	close $s
    }
    set listen [lindex [fconfigure $s -sockname] 2]
    set s1 [socket [info hostname] $listen]
    set timer [after 10000 "set x timed_out"]
    vwait x
    after cancel $timer
    close $s
    close $s1
    set l ""
    lappend l [expr {[lindex $x 2] == $listen}] [llength $x]
} {1 3}
test socket-7.5 {testing socket specific options} {socket unixOrPc} {
    set s [socket -server accept 0]
    proc accept {s a p} {
	global x
	set x [fconfigure $s -sockname]
	close $s
    }
    set listen [lindex [fconfigure $s -sockname] 2]
    set s1 [socket 127.0.0.1 $listen]
    set timer [after 10000 "set x timed_out"]
    vwait x
    after cancel $timer
    close $s
    close $s1
    set l ""
    lappend l [lindex $x 0] [expr {[lindex $x 2] == $listen}] [llength $x]
} {127.0.0.1 1 3}

test socket-8.1 {testing -async flag on sockets} {socket} {
    # NOTE: This test may fail on some Solaris 2.4 systems. If it does,
    # check that you have these patches installed (using showrev -p):
    #
    # 101907-05, 101925-02, 101945-14, 101959-03, 101969-05, 101973-03,
    # 101977-03, 101981-02, 101985-01, 102001-03, 102003-01, 102007-01,
    # 102011-02, 102024-01, 102039-01, 102044-01, 102048-01, 102062-03,
    # 102066-04, 102070-01, 102105-01, 102153-03, 102216-01, 102232-01,
    # 101878-03, 101879-01, 101880-03, 101933-01, 101950-01, 102030-01,
    # 102057-08, 102140-01, 101920-02, 101921-09, 101922-07, 101923-03
    #
    # If after installing these patches you are still experiencing a
    # problem, please email jyl@eng.sun.com. We have not observed this
    # failure on Solaris 2.5, so another option (instead of installing
    # these patches) is to upgrade to Solaris 2.5.
    set s [socket -server accept 0]
    proc accept {s a p} {
	global x
	puts $s bye
	close $s
	set x done
    }
    set s1 [socket -async [info hostname] [lindex [fconfigure $s -sockname] 2]]
    vwait x
    set z [gets $s1]
    close $s
    close $s1
    set z
} bye

test socket-9.1 {testing spurious events} {socket} {
    set len 0
    set spurious 0
    set done 0
    proc readlittle {s} {
	global spurious done len
	set l [read $s 1]
	if {[string length $l] == 0} {
	    if {![eof $s]} {
		incr spurious
	    } else {
		close $s
		set done 1
	    }
	} else {
	    incr len [string length $l]
	}
    }
    proc accept {s a p} {
	fconfigure $s -buffering none -blocking off
	fileevent $s readable [list readlittle $s]
    }
    set s [socket -server accept 0]
    set c [socket [info hostname] [lindex [fconfigure $s -sockname] 2]]
    puts -nonewline $c 01234567890123456789012345678901234567890123456789
    close $c
    set timer [after 10000 "set done timed_out"]
    vwait done
    after cancel $timer
    close $s
    list $spurious $len
} {0 50}
test socket-9.2 {testing async write, fileevents, flush on close} {socket} {
    set firstblock ""
    for {set i 0} {$i < 5} {incr i} {set firstblock "a$firstblock$firstblock"}
    set secondblock ""
    for {set i 0} {$i < 16} {incr i} {
	set secondblock "b$secondblock$secondblock"
    }
    set l [socket -server accept 0]
    proc accept {s a p} {
	fconfigure $s -blocking 0 -translation lf -buffersize 16384 \
		-buffering line
	fileevent $s readable "readable $s"
    }
    proc readable {s} {
	set l [gets $s]
	fileevent $s readable {}
	after 1000 respond $s
    }
    proc respond {s} {
	global firstblock
	puts -nonewline $s $firstblock
	after 1000 writedata $s
    }
    proc writedata {s} {
	global secondblock
	puts -nonewline $s $secondblock
	close $s
    }
    set s [socket [info hostname] [lindex [fconfigure $l -sockname] 2]]
    fconfigure $s -blocking 0 -trans lf -buffering line
    set count 0
    puts $s hello
    proc readit {s} {
	global count done
	set l [read $s]
	incr count [string length $l]
	if {[eof $s]} {
	    close $s
	    set done 1
	}
    }
    fileevent $s readable "readit $s"
    set timer [after 10000 "set done timed_out"]
    vwait done
    after cancel $timer
    close $l
    set count
} 65566
test socket-9.3 {testing EOF stickyness} {socket} {
    proc count_to_eof {s} {
	global count done timer
	set l [gets $s]
	if {[eof $s]} {
	    incr count
	    if {$count > 9} {
		close $s
		set done true
		set count {eof is sticky}
		after cancel $timer
	    }
	}
    }
    proc timerproc {} {
	global done count c
	set done true
	set count {timer went off, eof is not sticky}
	close $c
    }	
    set count 0
    set done false
    proc write_then_close {s} {
	puts $s bye
	close $s
    }
    proc accept {s a p} {
	fconfigure $s -buffering line -translation lf
	fileevent $s writable "write_then_close $s"
    }
    set s [socket -server accept 0]
    set c [socket [info hostname] [lindex [fconfigure $s -sockname] 2]]
    fconfigure $c -blocking off -buffering line -translation lf
    fileevent $c readable "count_to_eof $c"
    set timer [after 1000 timerproc]
    vwait done
    close $s
    set count
} {eof is sticky}

removeFile script

test socket-10.1 {testing socket accept callback error handling} {socket} {
    set goterror 0
    proc bgerror args {global goterror; set goterror 1}
    set s [socket -server accept 0]
    proc accept {s a p} {close $s; error}
    set c [socket 127.0.0.1 [lindex [fconfigure $s -sockname] 2]]
    vwait goterror
    close $s
    close $c
    set goterror
} 1

test socket-11.1 {tcp connection} {socket doTestsWithRemoteServer} {
    sendCommand {
	set socket9_1_test_server [socket -server accept 2834]
	proc accept {s a p} {
	    puts $s done
	    close $s
	}
    }
    set s [socket $remoteServerIP 2834]
    set r [gets $s]
    close $s
    sendCommand {close $socket9_1_test_server}
    set r
} done
test socket-11.2 {client specifies its port} {socket doTestsWithRemoteServer} {
    if {[info exists port]} {
	incr port
    } else {
	set port [expr 2048 + [pid]%1024]
    }
    sendCommand {
	set socket9_2_test_server [socket -server accept 2835]
	proc accept {s a p} {
	    puts $s $p
	    close $s
	}
    }
    set s [socket -myport $port $remoteServerIP 2835]
    set r [gets $s]
    close $s
    sendCommand {close $socket9_2_test_server}
    if {$r == $port} {
	set result ok
    } else {
	set result broken
    }
    set result
} ok
test socket-11.3 {trying to connect, no server} {socket doTestsWithRemoteServer} {
    set status ok
    if {![catch {set s [socket $remoteServerIp 2836]}]} {
	if {![catch {gets $s}]} {
	    set status broken
	}
	close $s
    }
    set status
} ok
test socket-11.4 {remote echo, one line} {socket doTestsWithRemoteServer} {
    sendCommand {
	set socket10_6_test_server [socket -server accept 2836]
	proc accept {s a p} {
	    fileevent $s readable [list echo $s]
	    fconfigure $s -buffering line -translation crlf
	}
	proc echo {s} {
	    set l [gets $s]
	    if {[eof $s]} {
		close $s
	    } else {
		puts $s $l
	    }
	}
    }
    set f [socket $remoteServerIP 2836]
    fconfigure $f -translation crlf -buffering line
    puts $f hello
    set r [gets $f]
    close $f
    sendCommand {close $socket10_6_test_server}
    set r
} hello
test socket-11.5 {remote echo, 50 lines} {socket doTestsWithRemoteServer} {
    sendCommand {
	set socket10_7_test_server [socket -server accept 2836]
	proc accept {s a p} {
	    fileevent $s readable [list echo $s]
	    fconfigure $s -buffering line -translation crlf
	}
	proc echo {s} {
	    set l [gets $s]
	    if {[eof $s]} {
		close $s
	    } else {
		puts $s $l
	    }
	}
    }
    set f [socket $remoteServerIP 2836]
    fconfigure $f -translation crlf -buffering line
    for {set cnt 0} {$cnt < 50} {incr cnt} {
	puts $f "hello, $cnt"
	if {[string compare [gets $f] "hello, $cnt"] != 0} {
	    break
	}
    }
    close $f
    sendCommand {close $socket10_7_test_server}
    set cnt
} 50
# Macintosh sockets can have more than one server per port
if {$tcl_platform(platform) == "macintosh"} {
    set conflictResult {0 2836}
} else {
    set conflictResult {1 {couldn't open socket: address already in use}}
}
test socket-11.6 {socket conflict} {socket doTestsWithRemoteServer} {
    set s1 [socket -server accept 2836]
    if {[catch {set s2 [socket -server accept 2836]} msg]} {
	set result [list 1 $msg]
    } else {
	set result [list 0 [lindex [fconfigure $s2 -sockname] 2]]
	close $s2
    }
    close $s1
    set result
} $conflictResult
test socket-11.7 {server with several clients} {socket doTestsWithRemoteServer} {
    sendCommand {
	set socket10_9_test_server [socket -server accept 2836]
	proc accept {s a p} {
	    fconfigure $s -buffering line
	    fileevent $s readable [list echo $s]
	}
	proc echo {s} {
	    set l [gets $s]
	    if {[eof $s]} {
		close $s
	    } else {
		puts $s $l
	    }
	}
    }
    set s1 [socket $remoteServerIP 2836]
    fconfigure $s1 -buffering line
    set s2 [socket $remoteServerIP 2836]
    fconfigure $s2 -buffering line
    set s3 [socket $remoteServerIP 2836]
    fconfigure $s3 -buffering line
    for {set i 0} {$i < 100} {incr i} {
	puts $s1 hello,s1
	gets $s1
	puts $s2 hello,s2
	gets $s2
	puts $s3 hello,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    sendCommand {close $socket10_9_test_server}
    set i
} 100    
test socket-11.8 {client with several servers} {socket doTestsWithRemoteServer} {
    sendCommand {
	set s1 [socket -server "accept 4003" 4003]
	set s2 [socket -server "accept 4004" 4004]
	set s3 [socket -server "accept 4005" 4005]
	proc accept {mp s a p} {
	    puts $s $mp
	    close $s
	}
    }
    set s1 [socket $remoteServerIP 4003]
    set s2 [socket $remoteServerIP 4004]
    set s3 [socket $remoteServerIP 4005]
    set l ""
    lappend l [gets $s1] [gets $s1] [eof $s1] [gets $s2] [gets $s2] [eof $s2] \
	[gets $s3] [gets $s3] [eof $s3]
    close $s1
    close $s2
    close $s3
    sendCommand {
	close $s1
	close $s2
	close $s3
    }
    set l
} {4003 {} 1 4004 {} 1 4005 {} 1}
test socket-11.9 {accept callback error} {socket doTestsWithRemoteServer} {
    set s [socket -server accept 2836]
    proc accept {s a p} {expr 10 / 0}
    proc bgerror args {
	global x
	set x $args
    }
    if {[catch {sendCommand {
	    set peername [fconfigure $callerSocket -peername]
	    set s [socket [lindex $peername 0] 2836]
	    close $s
    	 }} msg]} {
	close $s
	error $msg
    }
    set timer [after 10000 "set x timed_out"]
    vwait x
    after cancel $timer
    close $s
    rename bgerror {}
    set x
} {{divide by zero}}
test socket-11.10 {testing socket specific options} {socket doTestsWithRemoteServer} {
    sendCommand {
	set socket10_12_test_server [socket -server accept 2836]
	proc accept {s a p} {close $s}
    }
    set s [socket $remoteServerIP 2836]
    set p [fconfigure $s -peername]
    set n [fconfigure $s -sockname]
    set l ""
    lappend l [lindex $p 2] [llength $p] [llength $p]
    close $s
    sendCommand {close $socket10_12_test_server}
    set l
} {2836 3 3}
test socket-11.11 {testing spurious events} {socket doTestsWithRemoteServer} {
    sendCommand {
	set socket10_13_test_server [socket -server accept 2836]
	proc accept {s a p} {
	    fconfigure $s -translation "auto lf"
	    after 100 writesome $s
	}
	proc writesome {s} {
	    for {set i 0} {$i < 100} {incr i} {
		puts $s "line $i from remote server"
	    }
	    close $s
	}
    }
    set len 0
    set spurious 0
    set done 0
    proc readlittle {s} {
	global spurious done len
	set l [read $s 1]
	if {[string length $l] == 0} {
	    if {![eof $s]} {
		incr spurious
	    } else {
		close $s
		set done 1
	    }
	} else {
	    incr len [string length $l]
	}
    }
    set c [socket $remoteServerIP 2836]
    fileevent $c readable "readlittle $c"
    set timer [after 10000 "set done timed_out"]
    vwait done
    after cancel $timer
    sendCommand {close $socket10_13_test_server}
    list $spurious $len
} {0 2690}

test socket-11.12 {testing EOF stickyness} {socket doTestsWithRemoteServer} {
    set counter 0
    set done 0
    proc count_up {s} {
	global counter done after_id
	set l [gets $s]
	if {[eof $s]} {
	    incr counter
	    if {$counter > 9} {
		set done {EOF is sticky}
		after cancel $after_id
		close $s
	    }
	}
    }
    proc timed_out {} {
	global c done
	set done {timed_out, EOF is not sticky}
	close $c
    }
    sendCommand {
	set socket10_14_test_server [socket -server accept 2836]
	proc accept {s a p} {
	    after 100 close $s
	}
    }
    set c [socket $remoteServerIP 2836]
    fileevent $c readable [list count_up $c]
    set after_id [after 1000 timed_out]
    vwait done
    sendCommand {close $socket10_14_test_server}
    set done
} {EOF is sticky}

test socket-11.13 {testing async write, async flush, async close} \
	{socket doTestsWithRemoteServer} {
    proc readit {s} {
	global count done
	set l [read $s]
	incr count [string length $l]
	if {[eof $s]} {
	    close $s
	    set done 1
	}
    }
    sendCommand {
	set firstblock ""
	for {set i 0} {$i < 5} {incr i} {
		set firstblock "a$firstblock$firstblock"
	}
	set secondblock ""
	for {set i 0} {$i < 16} {incr i} {
	    set secondblock "b$secondblock$secondblock"
	}
	set l [socket -server accept 2845]
	proc accept {s a p} {
	    fconfigure $s -blocking 0 -translation lf -buffersize 16384 \
		-buffering line
	    fileevent $s readable "readable $s"
	}
	proc readable {s} {
	    set l [gets $s]
	    fileevent $s readable {}
	    after 1000 respond $s
	}
	proc respond {s} {
	    global firstblock
	    puts -nonewline $s $firstblock
	    after 1000 writedata $s
	}
	proc writedata {s} {
	    global secondblock
	    puts -nonewline $s $secondblock
	    close $s
	}
    }
    set s [socket $remoteServerIP 2845]
    fconfigure $s -blocking 0 -trans lf -buffering line
    set count 0
    puts $s hello
    fileevent $s readable "readit $s"
    set timer [after 10000 "set done timed_out"]
    vwait done
    after cancel $timer
    sendCommand {close $l}
    set count
} 65566

set path(script1) [makeFile {} script1]
set path(script2) [makeFile {} script2]

test socket-12.1 {testing inheritance of server sockets} {socket stdio exec} {
    file delete $path(script1)
    file delete $path(script2)

    # Script1 is just a 10 second delay.  If the server socket
    # is inherited, it will be held open for 10 seconds

    set f [open $path(script1) w]
    puts $f {
	after 10000 exit
	vwait forever
    }
    close $f

    # Script2 creates the server socket, launches script1,
    # waits a second, and exits.  The server socket will now
    # be closed unless script1 inherited it.

    set f [open $path(script2) w]
    puts $f [list set tcltest [interpreter]]
    puts -nonewline $f {
	set f [socket -server accept 0]
	puts [lindex [fconfigure $f -sockname] 2]
	proc accept { file addr port } {
	    close $file
	}
	exec $tcltest }
    puts $f [list $path(script1) &]
    puts $f {
	close $f
	after 1000 exit
	vwait forever
    }
    close $f
	
    # Launch script2 and wait 5 seconds

    ### exec [interpreter] script2 &
    set p [open "|[list [interpreter] $path(script2)]" r]
    gets $p listen

    after 5000 { set ok_to_proceed 1 }
    vwait ok_to_proceed

    # If we can still connect to the server, the socket got inherited.

    if {[catch {socket 127.0.0.1 $listen} msg]} {
	set x {server socket was not inherited}
    } else {
	close $msg
	set x {server socket was inherited}
    }

    close $p
    set x
} {server socket was not inherited}
test socket-12.2 {testing inheritance of client sockets} {socket stdio exec} {
    file delete $path(script1)
    file delete $path(script2)

    # Script1 is just a 20 second delay.  If the server socket
    # is inherited, it will be held open for 10 seconds

    set f [open $path(script1) w]
    puts $f {
	after 20000 exit
	vwait forever
    }
    close $f

    # Script2 opens the client socket and writes to it.  It then
    # launches script1 and exits.  If the child process inherited the
    # client socket, the socket will still be open.

    set f [open $path(script2) w]
    puts $f [list set tcltest [interpreter]]
    puts -nonewline $f {
        gets stdin port
	set f [socket 127.0.0.1 $port]
        exec $tcltest }
    puts $f [list $path(script1) &]
    puts $f {
	puts $f testing
	flush $f
	after 1000 exit
	vwait forever
    }
    close $f

    # Create the server socket

    set server [socket -server accept 0]
    proc accept { file host port } {
	# When the client connects, establish the read handler
	global server
	close $server
	fileevent $file readable [list getdata $file]
	fconfigure $file -buffering line -blocking 0
	return
    }
    proc getdata { file } {
	# Read handler on the accepted socket.
	global x
	global failed
	set status [catch {read $file} data]
	if {$status != 0} {
	    set x {read failed, error was $data}
	    catch { close $file }
	} elseif {[string compare {} $data]} {
	} elseif {[fblocked $file]} {
	} elseif {[eof $file]} {
	    if {$failed} {
		set x {client socket was inherited}
	    } else {
		set x {client socket was not inherited}
	    }
	    catch { close $file }
	} else {
	    set x {impossible case}
	    catch { close $file }
	}
	return
    }

    # If the socket doesn't hit end-of-file in 10 seconds, the
    # script1 process must have inherited the client.

    set failed 0
    after 10000 [list set failed 1]

    # Launch the script2 process
    ### exec [interpreter] script2 &

    set p [open "|[list [interpreter] $path(script2)]" w]
    puts $p [lindex [fconfigure $server -sockname] 2] ; flush $p

    vwait x
    if {!$failed} {
	vwait failed
    }
    close $p
    set x
} {client socket was not inherited}
test socket-12.3 {testing inheritance of accepted sockets} {socket stdio exec} {
    file delete $path(script1)
    file delete $path(script2)

    set f [open $path(script1) w]
    puts $f {
	after 10000 exit
	vwait forever
    }
    close $f

    set f [open $path(script2) w]
    puts $f [list set tcltest [interpreter]]
    puts -nonewline $f {
	set server [socket -server accept 0]
	puts stdout [lindex [fconfigure $server -sockname] 2]
	proc accept { file host port } }
    puts $f \{
    puts -nonewline $f {
	    global tcltest
	    puts $file {test data on socket}
	    exec $tcltest }
    puts $f [list $path(script1) &]
    puts $f {
	    after 1000 exit
	}
    puts $f \} 
    puts $f {
	vwait forever
    }
    close $f

    # Launch the script2 process and connect to it.  See how long
    # the socket stays open

    ## exec [interpreter] script2 &
    set p [open "|[list [interpreter] $path(script2)]" r]
    gets $p listen

    after 1000 set ok_to_proceed 1
    vwait ok_to_proceed

    set f [socket 127.0.0.1 $listen]
    fconfigure $f -buffering full -blocking 0
    fileevent $f readable [list getdata $f]

    # If the socket is still open after 5 seconds, the script1 process
    # must have inherited the accepted socket.

    set failed 0
    after 5000 set failed 1

    proc getdata { file } {
	# Read handler on the client socket.
	global x
	global failed
	set status [catch {read $file} data]
	if {$status != 0} {
	    set x {read failed, error was $data}
	    catch { close $file }
	} elseif {[string compare {} $data]} {
	} elseif {[fblocked $file]} {
	} elseif {[eof $file]} {
	    if {$failed} {
		set x {accepted socket was inherited}
	    } else {
		set x {accepted socket was not inherited}
	    }
	    catch { close $file }
	} else {
	    set x {impossible case}
	    catch { close $file }
	}
	return
    }
    
    vwait x

    close $p
    set x
} {accepted socket was not inherited}

test socket-13.1 {Testing use of shared socket between two threads} \
	-constraints {socket testthread} -setup {

    threadReap

    set path(script) [makeFile {
	set f [socket -server accept 0]
	set listen [lindex [fconfigure $f -sockname] 2]
	proc accept {s a p} {
            fileevent $s readable [list echo $s]
            fconfigure $s -buffering line
        }
	proc echo {s} {
	     global i
             set l [gets $s]
             if {[eof $s]} {
                 global x
                 close $s
                 set x done
             } else { 
	         incr i
                 puts $s $l
             }
	}
	set i 0
	vwait x
	close $f

	# thread cleans itself up.
	testthread exit
    } script]

} -body {
    # create a thread
    set serverthread [testthread create { source $path(script) } ]
    update
    set port [testthread send $serverthread {set listen}]
    update

    after 1000
    set s [socket 127.0.0.1 $port]
    fconfigure $s -buffering line

    catch {
	puts $s "hello"
	gets $s result
    }
    close $s
    update

    after 2000
    lappend result [threadReap]
} -cleanup {
    removeFile script
} -result {hello 1}

removeFile script1
removeFile script2

# cleanup
if {[string match sock* $commandSocket] == 1} {
   puts $commandSocket exit
   flush $commandSocket
}
catch {close $commandSocket}
catch {close $remoteProcChan}
::tcltest::cleanupTests
flush stdout
return