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|
=begin
= net/http.rb version 1.1.32
maintained by Minero Aoki <aamine@dp.u-netsurf.ne.jp>
This file is derived from "http-access.rb".
This program is free software.
You can distribute/modify this program under
the terms of the Ruby Distribute License.
Japanese version of this document is in "net" full package.
You can get it from RAA
(Ruby Application Archive: http://www.ruby-lang.org/en/raa.html).
= class HTTP
== Class Methods
: new( address = 'localhost', port = 80, proxy_addr = nil, proxy_port = nil )
creates a new Net::HTTP object.
If proxy_addr is given, this method is equals to
Net::HTTP::Proxy(proxy_addr,proxy_port).
: start( address = 'localhost', port = 80, proxy_addr = nil, proxy_port = nil )
: start( address = 'localhost', port = 80, proxy_addr = nil, proxy_port = nil ) {|http| .... }
is equals to
Net::HTTP.new( address, port, proxy_addr, proxy_port ).start(&block)
: Proxy( address, port )
creates a HTTP proxy class.
Arguments are address/port of proxy host.
You can replace HTTP class by this proxy class.
# example
proxy_http = HTTP::Proxy( 'proxy.foo.org', 8080 )
:
proxy_http.start( 'www.ruby-lang.org' ) do |http|
# connecting proxy.foo.org:8080
:
end
: proxy_class?
If self is HTTP, false.
If self is a class which was created by HTTP::Proxy(), true.
: port
HTTP default port (80).
== Methods
: start
: start {|http| .... }
creates a new Net::HTTP object and starts HTTP session.
When this method is called with block, gives a HTTP object to block
and close HTTP session after returning from the block.
: proxy?
true if self is a HTTP proxy class
: proxy_address
address of proxy host. If self is not a proxy, nil.
: proxy_port
port number of proxy host. If self is not a proxy, nil.
: get( path, header = nil, dest = '' )
: get( path, header = nil ) {|str| .... }
get data from "path" on connecting host.
"header" must be a Hash like { 'Accept' => '*/*', ... }.
Data is written to "dest" by using "<<" method.
This method returns Net::HTTPResponse object, and "dest".
# example
response, body = http.get( '/index.html' )
If called with block, give a part String of entity body.
Note:
If status is not 2xx(success), ProtocolError exception is
raised. At that time, you can get HTTPResponse object from
exception object. (same in head/post)
# example
begin
response, body = http.get( '/index.html' )
rescue Net::ProtoRetriableError => err
response = err.data
...
end
: head( path, header = nil )
gets only header from "path" on connecting host.
"header" is a Hash like { 'Accept' => '*/*', ... }.
This method returns a Net::HTTPResponse object.
You can http header from this object like:
response['content-length'] #-> '2554'
response['content-type'] #-> 'text/html'
response['Content-Type'] #-> 'text/html'
response['CoNtEnT-tYpe'] #-> 'text/html'
: post( path, data, header = nil, dest = '' )
: post( path, data, header = nil ) {|str| .... }
posts "data" (must be String now) to "path".
If the body exists, also gets entity body.
Data is written to "dest" by using "<<" method.
"header" must be a Hash like { 'Accept' => '*/*', ... }.
This method returns Net::HTTPResponse object and "dest".
If called with block, gives a part of entity body string.
: get2( path, header = nil )
: get2( path, header = nil ) {|recv| .... }
send GET request for "path".
"header" must be a Hash like { 'Accept' => '*/*', ... }.
If this method is called with block, one gives
a HTTPResponseReceiver object to block.
# example
http.get2( '/index.html' ) do |recv|
# "recv" is a HTTPResponseReceiver object
recv.header
recv.body
end
# another way
response = http.get2( '/index.html' )
response['content-type']
response.body
# this is wrong
http.get2( '/index.html' ) do |recv|
print recv.response.body # body is not read yet!!!
end
# but this is ok
http.get2( '/index.html' ) do |recv|
recv.body # read body and set recv.response.body
print recv.response.body # ref
end
: head2( path, header = nil )
: head2( path, header = nil ) {|recv| .... }
send HEAD request for "path".
"header" must be a Hash like { 'Accept' => 'text/html', ... }.
The difference between "head" method is that
"head2" does not raise exceptions.
If this method is called with block, one gives
a HTTPResponseReceiver object to block.
# example
response = http.head2( '/index.html' )
# another way
http.head2( '/index.html' ) do |recv|
recv.response
end
: post2( path, data, header = nil )
: post2( path, data, header = nil ) {|recv| .... }
posts "data" (must be String now) to "path".
"header" must be a Hash like { 'Accept' => '*/*', ... }.
If this method is called with block, one gives
a HTTPResponseReceiver object to block.
# example
http.post2( '/anycgi.rb', 'data data data...' ) do |recv|
# "recv" is a HTTPResponseReceiver object
recv.header
recv.body
end
# another way
response = http.post2( '/anycgi.rb', 'important data' )
response['content-type']
response.body
= class HTTPResponse
HTTP response object.
All "key" is case-insensitive.
== Methods
: body
the entity body. ("dest" argument for HTTP#get, post, put)
: self[ key ]
returns header field for "key".
for HTTP, value is a string like 'text/plain'(for Content-Type),
'2045'(for Content-Length), 'bytes 0-1024/10024'(for Content-Range).
Multiple header had be joined by HTTP1.1 scheme.
: self[ key ] = val
set field value for "key".
: key?( key )
true if key exists
: each {|name,value| .... }
iterates for each field name and value pair
: code
HTTP result code string. For example, '302'
: message
HTTP result message. For example, 'Not Found'
= class HTTPResponseReceiver
== Methods
: header
: response
Net::HTTPResponse object
: body( dest = '' )
: entity( dest = '' )
entity body. A body is written to "dest" using "<<" method.
: body {|str| ... }
gets entity body with block.
If this method is called twice, block is not executed and
returns first "dest".
= http.rb version 1.2 features
You can use 1.2 features by calling HTTP.version_1_2. And
calling Net::HTTP.version_1_1 allows to use 1.1 features.
# example
HTTP.start {|http1| ...(http1 has 1.1 features)... }
HTTP.version_1_2
HTTP.start {|http2| ...(http2 has 1.2 features)... }
HTTP.version_1_1
HTTP.start {|http3| ...(http3 has 1.1 features)... }
== Method (only diff to 1.1)
: get( path, u_header = nil )
: get( path, u_header = nil ) {|str| .... }
gets document from "path".
returns HTTPResponse object.
: head( path, u_header = nil )
gets only document header from "path".
returns HTTPResponse object.
: post( path, data, u_header = nil )
: post( path, data, u_header = nil ) {|str| .... }
posts "data" to "path" entity and gets document.
returns HTTPResponse object.
=end
require 'net/protocol'
module Net
class HTTPBadResponse < StandardError; end
class HTTP < Protocol
protocol_param :port, '80'
protocol_param :command_type, '::Net::NetPrivate::HTTPCommand'
###
### proxy
###
class << self
def Proxy( p_addr, p_port = nil )
::Net::NetPrivate::HTTPProxy.create_proxy_class(
p_addr, p_port || self.port )
end
alias orig_new new
def new( address = nil, port = nil, p_addr = nil, p_port = nil )
c = p_addr ? self::Proxy(p_addr, p_port) : self
i = c.orig_new( address, port )
setimplv i
i
end
def start( address = nil, port = nil, p_addr = nil, p_port = nil, &block )
new( address, port, p_addr, p_port ).start( &block )
end
def proxy_class?
false
end
def proxy_address
nil
end
def proxy_port
nil
end
end
def proxy?
false
end
def proxy_address
nil
end
def proxy_port
nil
end
def edit_path( path )
path
end
###
### 1.2 implementation
###
@@newimpl = false
#class << self
def self.version_1_2
@@newimpl = true
end
def self.version_1_1
@@newimpl = false
end
#private
def self.setimplv( obj )
f = @@newimpl
obj.instance_eval { @newimpl = f }
end
#end
###
### http operations
###
def get( path, u_header = nil, dest = nil, &block )
resp = get2( path, u_header ) {|f| f.body( dest, &block ) }
if @newimpl then
resp
else
resp.value
return resp, resp.body
end
end
def get2( path, u_header = nil, &block )
common_oper( u_header, true, block ) {|uh|
@command.get edit_path(path), uh
}
end
def head( path, u_header = nil )
resp = head2( path, u_header )
unless @newimpl then
resp.value
end
resp
end
def head2( path, u_header = nil, &block )
common_oper( u_header, false, block ) {|uh|
@command.head edit_path(path), uh
}
end
def post( path, data, u_header = nil, dest = nil, &block )
resp = post2( path, data, u_header ) {|f| f.body( dest, &block ) }
if @newimpl then
resp
else
resp.value
return resp, resp.body
end
end
def post2( path, data, u_header = nil, &block )
common_oper( u_header, true, block ) {|uh|
@command.post edit_path(path), uh, data
}
end
# not tested because I could not setup apache (__;;;
def put( path, src, u_header = nil )
resp = put2( path, src, u_header ) {|f| f.body }
if @newimpl then
resp
else
resp.value
return resp, resp.body
end
end
def put2( path, src, u_header = nil, &block )
common_oper( u_header, true, block ) {|uh|
@command.put path, uh, src
}
end
private
def common_oper( u_header, body_exist, block )
header = procheader( u_header )
recv = err = nil
connecting( header ) {
recv = HTTPResponseReceiver.new( @command, body_exist )
yield header
begin
block.call recv if block
rescue Exception => err
;
end
recv.terminate
recv.response
}
raise err if err
recv.response
end
def connecting( header )
if not @socket then
header['Connection'] = 'close'
start
elsif @socket.closed? then
@socket.reopen
end
resp = yield
unless keep_alive? header, resp then
@socket.close
end
end
def keep_alive?( header, resp )
if resp.key? 'connection' then
if /keep-alive/i === resp['connection'] then
return true
end
elsif resp.key? 'proxy-connection' then
if /keep-alive/i === resp['proxy-connection'] then
return true
end
elsif header.key? 'Connection' then
if /keep-alive/i === header['Connection'] then
return true
end
else
if @command.http_version == '1.1' then
return true
end
end
false
end
def procheader( h )
ret = {}
ret[ 'Host' ] = address +
((port == HTTP.port) ? '' : ":#{port}")
ret[ 'Connection' ] = 'Keep-Alive'
ret[ 'Accept' ] = '*/*'
return ret unless h
tmp = {}
h.each do |k,v|
key = k.split('-').collect {|i| i.capitalize }.join('-')
if tmp[key] then
$stderr.puts "'#{key}' http header appered twice" if $VERBOSE
end
tmp[key] = v
end
ret.update tmp
ret
end
def do_finish
end
end
HTTPSession = HTTP
module NetPrivate
module HTTPProxy
class << self
def create_proxy_class( p_addr, p_port )
klass = Class.new( HTTP )
klass.module_eval {
include HTTPProxy
@proxy_address = p_addr
@proxy_port = p_port
}
def klass.proxy_class?
true
end
def klass.proxy_address
@proxy_address
end
def klass.proxy_port
@proxy_port
end
klass
end
end
def initialize( addr, port )
super
@proxy_address = type.proxy_address
@proxy_port = type.proxy_port
end
attr_reader :proxy_address, :proxy_port
alias proxyaddr proxy_address
alias proxyport proxy_port
def proxy?
true
end
def connect( addr = nil, port = nil )
super @proxy_address, @proxy_port
end
def edit_path( path )
'http://' + address + (port == type.port ? '' : ":#{port}") + path
end
end
end # net private
class HTTPResponseReceiver
def initialize( command, body_exist )
@command = command
@body_exist = body_exist
@header = @body = nil
end
def inspect
"#<#{type}>"
end
def read_header
unless @header then
stream_check
@header = @command.get_response
end
@header
end
alias header read_header
alias response read_header
def read_body( dest = nil, &block )
unless @body then
read_header
to = procdest( dest, block )
stream_check
if @body_exist and @header.code_type.body_exist? then
@command.get_body @header, to
@header.body = @body = to
else
@command.no_body
@header.body = nil
@body = 1
end
end
@body == 1 ? nil : @body
end
alias body read_body
alias entity read_body
def terminate
read_header
read_body
@command = nil
end
private
def stream_check
unless @command then
raise IOError, 'receiver was used out of block'
end
end
def procdest( dest, block )
if dest and block then
raise ArgumentError,
'both of arg and block are given for HTTP method'
end
if block then
NetPrivate::ReadAdapter.new block
else
dest or ''
end
end
end
HTTPReadAdapter = HTTPResponseReceiver
class HTTPResponse < Response
def initialize( code_type, code, msg )
super
@data = {}
@body = nil
end
attr_accessor :body
def inspect
"#<#{type.name} #{code}>"
end
def []( key )
@data[ key.downcase ]
end
def []=( key, val )
@data[ key.downcase ] = val
end
def each( &block )
@data.each( &block )
end
def each_key( &block )
@data.each_key( &block )
end
def each_value( &block )
@data.each_value( &block )
end
def delete( key )
@data.delete key.downcase
end
def key?( key )
@data.key? key.downcase
end
def to_hash
@data.dup
end
def value
unless SuccessCode === self then
error! self
end
end
end
class Code
def http_mkchild( bodyexist = nil )
c = mkchild(nil)
be = if bodyexist.nil? then @body_exist else bodyexist end
c.instance_eval { @body_exist = be }
c
end
def body_exist?
@body_exist
end
end
HTTPInformationCode = InformationCode.http_mkchild( false )
HTTPSuccessCode = SuccessCode .http_mkchild( true )
HTTPRedirectionCode = RetriableCode .http_mkchild( true )
HTTPRetriableCode = HTTPRedirectionCode
HTTPClientErrorCode = FatalErrorCode .http_mkchild( true )
HTTPFatalErrorCode = HTTPClientErrorCode
HTTPServerErrorCode = ServerErrorCode.http_mkchild( true )
HTTPSwitchProtocol = HTTPInformationCode.http_mkchild
HTTPOK = HTTPSuccessCode.http_mkchild
HTTPCreated = HTTPSuccessCode.http_mkchild
HTTPAccepted = HTTPSuccessCode.http_mkchild
HTTPNonAuthoritativeInformation = HTTPSuccessCode.http_mkchild
HTTPNoContent = HTTPSuccessCode.http_mkchild( false )
HTTPResetContent = HTTPSuccessCode.http_mkchild( false )
HTTPPartialContent = HTTPSuccessCode.http_mkchild
HTTPMultipleChoice = HTTPRedirectionCode.http_mkchild
HTTPMovedPermanently = HTTPRedirectionCode.http_mkchild
HTTPMovedTemporarily = HTTPRedirectionCode.http_mkchild
HTTPNotModified = HTTPRedirectionCode.http_mkchild( false )
HTTPUseProxy = HTTPRedirectionCode.http_mkchild( false )
HTTPBadRequest = HTTPClientErrorCode.http_mkchild
HTTPUnauthorized = HTTPClientErrorCode.http_mkchild
HTTPPaymentRequired = HTTPClientErrorCode.http_mkchild
HTTPForbidden = HTTPClientErrorCode.http_mkchild
HTTPNotFound = HTTPClientErrorCode.http_mkchild
HTTPMethodNotAllowed = HTTPClientErrorCode.http_mkchild
HTTPNotAcceptable = HTTPClientErrorCode.http_mkchild
HTTPProxyAuthenticationRequired = HTTPClientErrorCode.http_mkchild
HTTPRequestTimeOut = HTTPClientErrorCode.http_mkchild
HTTPConflict = HTTPClientErrorCode.http_mkchild
HTTPGone = HTTPClientErrorCode.http_mkchild
HTTPLengthRequired = HTTPClientErrorCode.http_mkchild
HTTPPreconditionFailed = HTTPClientErrorCode.http_mkchild
HTTPRequestEntityTooLarge = HTTPClientErrorCode.http_mkchild
HTTPRequestURITooLarge = HTTPClientErrorCode.http_mkchild
HTTPUnsupportedMediaType = HTTPClientErrorCode.http_mkchild
HTTPNotImplemented = HTTPServerErrorCode.http_mkchild
HTTPBadGateway = HTTPServerErrorCode.http_mkchild
HTTPServiceUnavailable = HTTPServerErrorCode.http_mkchild
HTTPGatewayTimeOut = HTTPServerErrorCode.http_mkchild
HTTPVersionNotSupported = HTTPServerErrorCode.http_mkchild
module NetPrivate
class HTTPCommand < Command
HTTPVersion = '1.1'
def initialize( sock )
@http_version = HTTPVersion
super sock
end
attr_reader :http_version
def inspect
"#<Net::HTTPCommand>"
end
###
### request
###
public
def get( path, u_header )
return unless begin_critical
request sprintf('GET %s HTTP/%s', path, HTTPVersion), u_header
end
def head( path, u_header )
return unless begin_critical
request sprintf('HEAD %s HTTP/%s', path, HTTPVersion), u_header
end
def post( path, u_header, data )
return unless begin_critical
u_header[ 'Content-Length' ] = data.size.to_s
request sprintf('POST %s HTTP/%s', path, HTTPVersion), u_header
@socket.write data
end
def put( path, u_header, src )
return unless begin_critical
request sprintf('PUT %s HTTP/%s', path, HTTPVersion), u_header
@socket.write_bin src
end
# def delete
# def trace
# def options
def quit
end
private
def request( req, u_header )
@socket.writeline req
u_header.each do |n,v|
@socket.writeline n + ': ' + v
end
@socket.writeline ''
end
###
### response line & header
###
public
def get_response
resp = get_resp0
resp = get_resp0 while ContinueCode === resp
resp
end
private
def get_resp0
resp = get_reply
while true do
line = @socket.readline
break if line.empty?
m = /\A([^:]+):\s*/.match( line )
unless m then
raise HTTPBadResponse, 'wrong header line format'
end
nm = m[1]
line = m.post_match
if resp.key? nm then
resp[nm] << ', ' << line
else
resp[nm] = line
end
end
resp
end
def get_reply
str = @socket.readline
m = /\AHTTP\/(\d+\.\d+)?\s+(\d\d\d)\s*(.*)\z/i.match( str )
unless m then
raise HTTPBadResponse, "wrong status line: #{str}"
end
@http_version = m[1]
status = m[2]
discrip = m[3]
code = HTTPCODE_TO_OBJ[status] ||
HTTPCODE_CLASS_TO_OBJ[status[0,1]] ||
UnknownCode
HTTPResponse.new( code, status, discrip )
end
HTTPCODE_CLASS_TO_OBJ = {
'1' => HTTPInformationCode,
'2' => HTTPSuccessCode,
'3' => HTTPRedirectionCode,
'4' => HTTPClientErrorCode,
'5' => HTTPServerErrorCode
}
HTTPCODE_TO_OBJ = {
'100' => ContinueCode,
'101' => HTTPSwitchProtocol,
'200' => HTTPOK,
'201' => HTTPCreated,
'202' => HTTPAccepted,
'203' => HTTPNonAuthoritativeInformation,
'204' => HTTPNoContent,
'205' => HTTPResetContent,
'206' => HTTPPartialContent,
'300' => HTTPMultipleChoice,
'301' => HTTPMovedPermanently,
'302' => HTTPMovedTemporarily,
'303' => HTTPMovedPermanently,
'304' => HTTPNotModified,
'305' => HTTPUseProxy,
'400' => HTTPBadRequest,
'401' => HTTPUnauthorized,
'402' => HTTPPaymentRequired,
'403' => HTTPForbidden,
'404' => HTTPNotFound,
'405' => HTTPMethodNotAllowed,
'406' => HTTPNotAcceptable,
'407' => HTTPProxyAuthenticationRequired,
'408' => HTTPRequestTimeOut,
'409' => HTTPConflict,
'410' => HTTPGone,
'411' => HTTPFatalErrorCode,
'412' => HTTPPreconditionFailed,
'413' => HTTPRequestEntityTooLarge,
'414' => HTTPRequestURITooLarge,
'415' => HTTPUnsupportedMediaType,
'500' => HTTPFatalErrorCode,
'501' => HTTPNotImplemented,
'502' => HTTPBadGateway,
'503' => HTTPServiceUnavailable,
'504' => HTTPGatewayTimeOut,
'505' => HTTPVersionNotSupported
}
###
### body
###
public
def get_body( resp, dest )
if chunked? resp then
read_chunked dest
else
clen = content_length( resp )
if clen then
@socket.read clen, dest
else
clen = range_length( resp )
if clen then
@socket.read clen, dest
else
@socket.read_all dest
end
end
end
end_critical
end
def no_body
end_critical
end
private
def read_chunked( dest )
len = nil
total = 0
while true do
line = @socket.readline
m = /[0-9a-fA-F]+/.match( line )
unless m then
raise HTTPBadResponse, "wrong chunk size line: #{line}"
end
len = m[0].hex
break if len == 0
@socket.read( len, dest ); total += len
@socket.read 2 # \r\n
end
until @socket.readline.empty? do
;
end
end
def content_length( resp )
if resp.key? 'content-length' then
m = /\d+/.match( resp['content-length'] )
unless m then
raise HTTPBadResponse, 'wrong Content-Length format'
end
m[0].to_i
else
nil
end
end
def chunked?( resp )
tmp = resp['transfer-encoding']
tmp and /(?:\A|\s+)chunked(?:\s+|\z)/i === tmp
end
def range_length( resp )
if resp.key? 'content-range' then
m = %r<bytes\s+(\d+)-(\d+)/\d+>.match( resp['content-range'] )
unless m then
raise HTTPBadResponse, 'wrong Content-Range format'
end
l = m[2].to_i
u = m[1].to_i
if l > u then
nil
else
u - l
end
else
nil
end
end
end
end # module Net::NetPrivate
end # module Net
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