VxWorks的开发平台Tornado2.2升级到2.2.1的补丁。

				# http.tcl				# Client-side HTTP for GET, POST, and HEAD commands.				# These routines can be used in untrusted code that uses the Safesock				# security policy.				# These procedures use a callback interface to avoid using vwait,				# which is not defined in the safe base.				#				# SCCS: @(#) http.tcl 1.11 97/12/03 13:02:39				#				# See the http.n man page for documentation								package provide http 1.0								array set http {				    -accept */*				    -proxyhost {}				    -proxyport {}				    -useragent {Tcl http client package 1.0}				    -proxyfilter httpProxyRequired				}				proc http_config {args} {				    global http				    set options [lsort [array names http -*]]				    set usage [join $options ", "]				    if {[llength $args] == 0} {					set result {}					foreach name $options {					    lappend result $name $http($name)					}					return $result				    }				    regsub -all -- - $options {} options				    set pat ^-([join $options |])$				    if {[llength $args] == 1} {					set flag [lindex $args 0]					if {[regexp -- $pat $flag]} {					    return $http($flag)					} else {					    return -code error "Unknown option $flag, must be: $usage"					}				    } else {					foreach {flag value} $args {					    if {[regexp -- $pat $flag]} {						set http($flag) $value					    } else {						return -code error "Unknown option $flag, must be: $usage"					    }					}				    }				}								 proc httpFinish { token {errormsg ""} } {				    upvar #0 $token state				    global errorInfo errorCode				    if {[string length $errormsg] != 0} {					set state(error) [list $errormsg $errorInfo $errorCode]					set state(status) error				    }				    catch {close $state(sock)}				    catch {after cancel $state(after)}				    if {[info exists state(-command)]} {					if {[catch {eval $state(-command) {$token}} err]} {					    if {[string length $errormsg] == 0} {						set state(error) [list $err $errorInfo $errorCode]						set state(status) error					    }					}					unset state(-command)				    }				}				proc http_reset { token {why reset} } {				    upvar #0 $token state				    set state(status) $why				    catch {fileevent $state(sock) readable {}}				    httpFinish $token				    if {[info exists state(error)]} {					set errorlist $state(error)					unset state(error)					eval error $errorlist				    }				}				proc http_get { url args } {				    global http				    if {![info exists http(uid)]} {					set http(uid) 0				    }				    set token http#[incr http(uid)]				    upvar #0 $token state				    http_reset $token				    array set state {					-blocksize 	8192					-validate 	0					-headers 	{}					-timeout 	0					state		header					meta		{}					currentsize	0					totalsize	0				        type            text/html				        body            {}					status		""				    }				    set options {-blocksize -channel -command -handler -headers \						-progress -query -validate -timeout}				    set usage [join $options ", "]				    regsub -all -- - $options {} options				    set pat ^-([join $options |])$				    foreach {flag value} $args {					if {[regexp $pat $flag]} {					    # Validate numbers					    if {[info exists state($flag)] && \						    [regexp {^[0-9]+$} $state($flag)] && \						    ![regexp {^[0-9]+$} $value]} {						return -code error "Bad value for $flag ($value), must be integer"					    }					    set state($flag) $value					} else {					    return -code error "Unknown option $flag, can be: $usage"					}				    }				    if {! [regexp -nocase {^(http://)?([^/:]+)(:([0-9]+))?(/.*)?$} $url \					    x proto host y port srvurl]} {					error "Unsupported URL: $url"				    }				    if {[string length $port] == 0} {					set port 80				    }				    if {[string length $srvurl] == 0} {					set srvurl /				    }				    if {[string length $proto] == 0} {					set url http://$url				    }				    set state(url) $url				    if {![catch {$http(-proxyfilter) $host} proxy]} {					set phost [lindex $proxy 0]					set pport [lindex $proxy 1]				    }				    if {$state(-timeout) > 0} {					set state(after) [after $state(-timeout) [list http_reset $token timeout]]				    }				    if {[info exists phost] && [string length $phost]} {					set srvurl $url					set s [socket $phost $pport]				    } else {					set s [socket $host $port]				    }				    set state(sock) $s								    # Send data in cr-lf format, but accept any line terminators								    fconfigure $s -translation {auto crlf} -buffersize $state(-blocksize)								    # The following is disallowed in safe interpreters, but the socket				    # is already in non-blocking mode in that case.								    catch {fconfigure $s -blocking off}				    set len 0				    set how GET				    if {[info exists state(-query)]} {					set len [string length $state(-query)]					if {$len > 0} {					    set how POST					}				    } elseif {$state(-validate)} {					set how HEAD				    }				    puts $s "$how $srvurl HTTP/1.0"				    puts $s "Accept: $http(-accept)"				    puts $s "Host: $host"				    puts $s "User-Agent: $http(-useragent)"				    foreach {key value} $state(-headers) {					regsub -all \[\n\r\]  $value {} value					set key [string trim $key]					if {[string length $key]} {					    puts $s "$key: $value"					}				    }				    if {$len > 0} {					puts $s "Content-Length: $len"					puts $s "Content-Type: application/x-www-form-urlencoded"					puts $s ""					fconfigure $s -translation {auto binary}					puts $s $state(-query)				    } else {					puts $s ""				    }				    flush $s				    fileevent $s readable [list httpEvent $token]				    if {! [info exists state(-command)]} {					http_wait $token				    }				    return $token				}				proc http_data {token} {				    upvar #0 $token state				    return $state(body)				}				proc http_status {token} {				    upvar #0 $token state				    return $state(status)				}				proc http_code {token} {				    upvar #0 $token state				    return $state(http)				}				proc http_size {token} {				    upvar #0 $token state				    return $state(currentsize)				}								 proc httpEvent {token} {				    upvar #0 $token state				    set s $state(sock)								     if {[eof $s]} {					httpEof $token					return				    }				    if {$state(state) == "header"} {					set n [gets $s line]					if {$n == 0} {					    set state(state) body					    if {![regexp -nocase ^text $state(type)]} {						# Turn off conversions for non-text data						fconfigure $s -translation binary						if {[info exists state(-channel)]} {						    fconfigure $state(-channel) -translation binary						}					    }					    if {[info exists state(-channel)] &&						    ![info exists state(-handler)]} {						# Initiate a sequence of background fcopies						fileevent $s readable {}						httpCopyStart $s $token					    }					} elseif {$n > 0} {					    if {[regexp -nocase {^content-type:(.+)$} $line x type]} {						set state(type) [string trim $type]					    }					    if {[regexp -nocase {^content-length:(.+)$} $line x length]} {						set state(totalsize) [string trim $length]					    }					    if {[regexp -nocase {^([^:]+):(.+)$} $line x key value]} {						lappend state(meta) $key $value					    } elseif {[regexp ^HTTP $line]} {						set state(http) $line					    }					}				    } else {					if {[catch {					    if {[info exists state(-handler)]} {						set n [eval $state(-handler) {$s $token}]					    } else {						set block [read $s $state(-blocksize)]						set n [string length $block]						if {$n >= 0} {						    append state(body) $block						}					    }					    if {$n >= 0} {						incr state(currentsize) $n					    }					} err]} {					    httpFinish $token $err					} else {					    if {[info exists state(-progress)]} {						eval $state(-progress) {$token $state(totalsize) $state(currentsize)}					    }					}				    }				}				 proc httpCopyStart {s token} {				    upvar #0 $token state				    if {[catch {					fcopy $s $state(-channel) -size $state(-blocksize) -command \					    [list httpCopyDone $token]				    } err]} {					httpFinish $token $err				    }				}				 proc httpCopyDone {token count {error {}}} {				    upvar #0 $token state				    set s $state(sock)				    incr state(currentsize) $count				    if {[info exists state(-progress)]} {					eval $state(-progress) {$token $state(totalsize) $state(currentsize)}				    }				    if {([string length $error] != 0)} {					httpFinish $token $error				    } elseif {[eof $s]} {					httpEof $token				    } else {					httpCopyStart $s $token				    }				}				 proc httpEof {token} {				    upvar #0 $token state				    if {$state(state) == "header"} {					# Premature eof					set state(status) eof				    } else {					set state(status) ok				    }				    set state(state) eof				    httpFinish $token				}				proc http_wait {token} {				    upvar #0 $token state				    if {![info exists state(status)] || [string length $state(status)] == 0} {					vwait $token\(status)				    }				    if {[info exists state(error)]} {					set errorlist $state(error)					unset state(error)					eval error $errorlist				    }				    return $state(status)				}								# Call http_formatQuery with an even number of arguments, where the first is				# a name, the second is a value, the third is another name, and so on.								proc http_formatQuery {args} {				    set result ""				    set sep ""				    foreach i $args {					append result  $sep [httpMapReply $i]					if {$sep != "="} {					    set sep =					} else {					    set sep &					}				    }				    return $result				}								# do x-www-urlencoded character mapping				# The spec says: "non-alphanumeric characters are replaced by '%HH'"				# 1 leave alphanumerics characters alone				# 2 Convert every other character to an array lookup				# 3 Escape constructs that are "special" to the tcl parser				# 4 "subst" the result, doing all the array substitutions				 				 proc httpMapReply {string} {				    global httpFormMap				    set alphanumeric	a-zA-Z0-9				    if {![info exists httpFormMap]} {					 					for {set i 1} {$i 					    set c [format %c $i]					    if {![string match \[$alphanumeric\] $c]} {						set httpFormMap($c) %[format %.2x $i]					    }					}					# These are handled specially					array set httpFormMap {					    " " +   \n %0d%0a					}				    }				    regsub -all \[^$alphanumeric\] $string {$httpFormMap(&)} string				    regsub -all \n $string {\\n} string				    regsub -all \t $string {\\t} string				    regsub -all {[][{})\\]\)} $string {\\&} string				    return [subst $string]				}								# Default proxy filter. 				 proc httpProxyRequired {host} {				    global http				    if {[info exists http(-proxyhost)] && [string length $http(-proxyhost)]} {					if {![info exists http(-proxyport)] || ![string length $http(-proxyport)]} {					    set http(-proxyport) 8080					}					return [list $http(-proxyhost) $http(-proxyport)]				    } else {					return {}				    }				}