path: root/contrib/tcl/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.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# 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.
#
# "@(#) socket.test 1.56 96/04/20 13:29:26"

if {[string compare test [info procs test]] == 1} then {source defs}

#
# 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] && ($tcl_platform(platform) != "macintosh")} {
    set remoteServerIP localhost
}
if {($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 remotePid -1
if {$doTestsWithRemoteServer == 1} {
    catch {close $commandSocket}
    if {[catch {set commandSocket [socket $remoteServerIP \
						$remoteServerPort]}] != 0} {
	if {[info commands exec] == ""} {
	    set doTestsWithRemoteServer 0
	} else {
	    set remoteServerIP localhost
	    if {[catch {set remotePid [exec $tcltest remote.tcl \
						-serverIsSilent \
						-port $remoteServerPort \
						-address $remoteServerIP &]} \
		   msg] == 0} {
		after 1000
		if {[catch {set commandSocket [socket $remoteServerIP \
				$remoteServerPort]}] == 0} {
		    fconfigure $commandSocket -translation crlf -buffering line
		} else {
		    set doTestsWithRemoteServer 0
		}
	    } else {
		set doTestsWithRemoteServer 0
	    }
	}
    } else {
	fconfigure $commandSocket -translation crlf -buffering line
   }
}

if {$doTestsWithRemoteServer == 0} {
   puts "Skipping tests with remote server. See tests/socket.test for"
   puts "information on how to run remote server."
}

#
# 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} {
    list [catch {socket -server} msg] $msg
} {1 {no argument given for -server option}}
test socket-1.2 {arg parsing for socket command} {
    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} {
    list [catch {socket -myaddr} msg] $msg
} {1 {no argument given for -myaddr option}}
test socket-1.4 {arg parsing for socket command} {
    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} {
    list [catch {socket -myport} msg] $msg
} {1 {no argument given for -myport option}}
test socket-1.6 {arg parsing for socket command} {
    list [catch {socket -myport xxxx} msg] $msg
} {1 {expected integer but got "xxxx"}}
test socket-1.7 {arg parsing for socket command} {
    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} {
    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} {
    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} {
    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} {
    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} {
    list [catch {socket foo badport} msg] $msg
} {1 {expected integer but got "badport"}}

test socket-2.1 {tcp connection} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	set f [socket -server accept 2828]
	proc accept {file addr port} {
	    global x
	    set x done
            close $file
	}
	puts ready
	vwait x
	close $f
	puts done
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f x
    if {[catch {socket localhost 2828} 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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
        set f [socket -server accept 2828]
	proc accept {file addr port} {
            global x
            puts "[gets $file] $port"
            close $file
            set x done
	}
	puts ready
	vwait x
	close $f
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f x
    global port
    if {[catch {socket -myport $port localhost 2828} sock]} {
        set x $sock
	close [socket localhost 2828]
	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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
        set f [socket  -server accept 2828]
	proc accept {file addr port} {
            global x
            puts "[gets $file] $addr"
            close $file
            set x done
	}
	puts ready
	vwait x
	close $f
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f x
    if {[catch {socket -myaddr localhost localhost 2828} 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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
        set f [socket -server accept -myaddr [info hostname] 2828]
	proc accept {file addr port} {
            global x
            puts "[gets $file]"
            close $file
            set x done
	}
	puts ready
	vwait x
	close $f
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f x
    if {[catch {socket [info hostname] 2828} 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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
        set f [socket -server accept 2828]
	proc accept {file addr port} {
            global x
            puts "[gets $file]"
            close $file
            set x done
	}
	puts ready
	vwait x
	close $f
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f x
    if {[catch {socket localhost 2828} 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} {unixOrPc} {
    set status ok
    if {![catch {set sock [socket localhost 2828]}]} {
	if {![catch {gets $sock}]} {
	    set status broken
	}
	close $sock
    }
    set status
} ok
test socket-2.7 {echo server, one line} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	set f [socket -server accept 2828]
	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
	vwait x
	close $f
	puts done
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f
    set s [socket localhost 2828]
    fconfigure $s -buffering line -translation lf
    puts $s "hello abcdefghijklmnop"
    set x [gets $s]
    close $s
    set y [gets $f]
    close $f
    list $x $y
} {{hello abcdefghijklmnop} done}
test socket-2.8 {echo server, loop 50 times, single connection} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	set f [socket -server accept 2828]
	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
	vwait x
	close $f
	puts "done $i"
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f
    set s [socket localhost 2828]
    fconfigure $s -buffering line
    for {set x 0} {$x < 50} {incr x} {
        puts $s "hello abcdefghijklmnop"
        gets $s
    }
    close $s
    set x [gets $f]
    close $f
    set x
} {done 50}
test socket-2.9 {socket conflict} {unixOrPc} {
    set s [socket -server accept 2828]
    removeFile script
    set f [open script w]
    puts $f {set f [socket -server accept 2828]}
    close $f
    set f [open "|$tcltest script" r]
    gets $f
    after 100
    set x [list [catch {close $f} msg] $msg]
    close $s
    set x
} {1 {couldn't open socket: address already in use
    while executing
"socket -server accept 2828"
    invoked from within
"set f [socket -server accept 2828]..."
    (file "script" line 1)}}

test socket-3.1 {socket conflict} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	set f [socket -server accept 2828]
	puts ready
	gets stdin
	close $f
    }
    close $f
    set f [open "|$tcltest script" r+]
    gets $f
    set x [list [catch {socket -server accept 2828} 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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	set counter 0
	set s [socket -server accept 2828]
	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
	vwait x
	vwait x
	vwait x
	close $s
	puts done
    }
    close $f
    set f [open "|$tcltest script" r+]
    set x [gets $f]
    set s1 [socket localhost 2828]
    fconfigure $s1 -buffering line
    set s2 [socket localhost 2828]
    fconfigure $s2 -buffering line
    set s3 [socket localhost 2828]
    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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	gets stdin
	set s [socket localhost 2828]
	fconfigure $s -buffering line
	for {set i 0} {$i < 100} {incr i} {
	    puts $s hello
	    gets $s
	}
	close $s
	puts bye
	gets stdin
    }
    close $f
    set p1 [open "|$tcltest script" r+]
    fconfigure $p1 -buffering line
    set p2 [open "|$tcltest script" r+]
    fconfigure $p2 -buffering line
    set p3 [open "|$tcltest 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 s [socket -server accept 2828]
    puts $p1 open
    puts $p2 open
    puts $p3 open
    vwait x
    vwait x
    vwait x
    close $s
    set l ""
    lappend l [list p1 [gets $p1]]
    lappend l [list p2 [gets $p2]]
    lappend l [list p3 [gets $p3]]
    puts $p1 bye
    puts $p2 bye
    puts $p3 bye
    close $p1
    close $p2
    close $p3
    set l
} {{p1 bye} {p2 bye} {p3 bye}}
test socket-4.2 {byte order problems, socket numbers, htons} {
    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} {unixOnly} {
    #
    # THIS TEST WILL FAIL if you are running as superuser.
    #
    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} {
    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} {unixOnly} {
    #
    # THIS TEST WILL FAIL if you are running as superuser.
    #
    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} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	gets stdin
	socket localhost 2848
    }
    close $f
    set f [open "|$tcltest script" r+]
    proc bgerror args {
	global x
	set x $args
    }
    proc accept {s a p} {expr 10 / 0}
    set s [socket -server accept 2848]
    puts $f hello
    close $f
    vwait x
    close $s
    rename bgerror {}
    set x
} {{divide by zero}}

test socket-7.1 {testing socket specific options} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	socket -server accept 2828
	proc accept args {
	    global x
	    set x done
	}
	puts ready
	vwait x
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f
    set s [socket localhost 2828]
    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] 2828]
    lappend l [llength $p]
} {0 0 3}
test socket-7.2 {testing socket specific options} {unixOrPc} {
    removeFile script
    set f [open script w]
    puts $f {
	socket -server accept 2828
	proc accept args {
	    global x
	    set x done
	}
	puts ready
	vwait x
    }
    close $f
    set f [open "|$tcltest script" r]
    gets $f
    set s [socket localhost 2828]
    set p [fconfigure $s -sockname]
    close $s
    close $f
    set l ""
    lappend l [llength $p]
    lappend l [lindex $p 0]
    lappend l [expr [lindex $p 2] == 2828]
} {3 127.0.0.1 0}
test socket-7.3 {testing socket specific options} {
    set s [socket -server accept 2828]
    set l [fconfigure $s]
    close $s
    llength $l
} 10
test socket-7.4 {testing socket specific options} {
    set s [socket -server accept 2828]
    proc accept {s a p} {
	global x
	set x [fconfigure $s -sockname]
	close $s
    }
    set s1 [socket localhost 2828]
    vwait x
    close $s
    close $s1
    set l ""
    lappend l [lindex $x 0] [lindex $x 2] [llength $x]
} {127.0.0.1 2828 3}

test socket-8.1 {testing -async flag on sockets} {
    # 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 2828]
    proc accept {s a p} {
	global x
	puts $s bye
	close $s
	set x done
    }
    set s1 [socket -async localhost 2828]
    vwait x
    set z [gets $s1]
    close $s
    close $s1
    set z
} bye

removeFile script

#
# The rest of the tests are run only if we are doing testing against
# a remote server.
#

if {$doTestsWithRemoteServer == 0} {
    return
}

test socket-9.1 {tcp connection} {
    sendCommand {
	set socket9_1_test_server [socket -server accept 2828]
	proc accept {s a p} {
	    puts $s done
	    close $s
	}
    }
    set s [socket $remoteServerIP 2828]
    set r [gets $s]
    close $s
    sendCommand {close $socket9_1_test_server}
    set r
} done
test socket-9.2 {client specifies its port} {
    if {[info exists port]} {
	incr port
    } else {
	set port [expr 2048 + [pid]%1024]
    }
    sendCommand {
	set socket9_2_test_server [socket -server accept 2828]
	proc accept {s a p} {
	    puts $s $p
	    close $s
	}
    }
    set s [socket -myport $port $remoteServerIP 2828]
    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
#
# Tests io-9.3, io-9.4 have been removed.
#
test socket-9.5 {trying to connect, no server} {
    set status ok
    if {![catch {set s [socket $remoteServerIp 2828]}]} {
	if {![catch {gets $s}]} {
	    set status broken
	}
	close $s
    }
    set status
} ok
test socket-9.6 {remote echo, one line} {
    sendCommand {
	set socket9_6_test_server [socket -server accept 2828]
	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 2828]
    fconfigure $f -translation crlf -buffering line
    puts $f hello
    set r [gets $f]
    close $f
    sendCommand {close $socket9_6_test_server}
    set r
} hello
test socket-9.7 {remote echo, 50 lines} {
    sendCommand {
	set socket9_7_test_server [socket -server accept 2828]
	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 2828]
    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 $socket9_7_test_server}
    set cnt
} 50
# Macintosh sockets can have more than one server per port
if {$tcl_platform(platform) == "macintosh"} {
    set conflictResult {0 2828}
} else {
    set conflictResult {1 {couldn't open socket: address already in use}}
}
test socket-9.8 {socket conflict} {
    set s1 [socket -server accept 2828]
    if {[catch {set s2 [socket -server accept 2828]} 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-9.9 {server with several clients} {
    sendCommand {
	set socket9_9_test_server [socket -server accept 2828]
	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 2828]
    fconfigure $s1 -buffering line
    set s2 [socket $remoteServerIP 2828]
    fconfigure $s2 -buffering line
    set s3 [socket $remoteServerIP 2828]
    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 $socket9_9_test_server}
    set i
} 100    
test socket-9.10 {client with several servers} {
    sendCommand {
	set s1 [socket -server "accept 3000" 3000]
	set s2 [socket -server "accept 3001" 3001]
	set s3 [socket -server "accept 3002" 3002]
	proc accept {mp s a p} {
	    puts $s $mp
	    close $s
	}
    }
    set s1 [socket $remoteServerIP 3000]
    set s2 [socket $remoteServerIP 3001]
    set s3 [socket $remoteServerIP 3002]
    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
} {3000 {} 1 3001 {} 1 3002 {} 1}
test socket-9.11 {accept callback error} {
    set s [socket -server accept 2828]
    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] 2828]
	    close $s
    	 }} msg]} {
	close $s
	error $msg
    }
    vwait x
    close $s
    rename bgerror {}
    set x
} {{divide by zero}}
test socket-9.12 {testing socket specific options} {
    sendCommand {
	set socket9_12_test_server [socket -server accept 2828]
	proc accept {s a p} {close $s}
    }
    set s [socket $remoteServerIP 2828]
    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 $socket9_12_test_server}
    set l
} {2828 3 3}

if {$remotePid != -1} {
   puts $commandSocket exit
   flush $commandSocket
}
catch {close $commandSocket}

set x ""
unset x