# class Bundler::Persistent::Net::HTTP::Persistent

`Persistent` connections for `Net::HTTP`

`Bundler::Persistent::Net::HTTP::Persistent` maintains persistent connections across all the servers you wish to talk to. For each host:port you communicate with a single persistent connection is created.

Multiple `Bundler::Persistent::Net::HTTP::Persistent` objects will share the same set of connections.

For each thread you start a new connection will be created. A `Bundler::Persistent::Net::HTTP::Persistent` connection will not be shared across threads.

You can shut down the HTTP connections when done by calling `shutdown`. You should name your `Bundler::Persistent::Net::HTTP::Persistent` object if you intend to call this method.

Example:

    require 'bundler/vendor/net-http-persistent/lib/net/http/persistent'

    uri = URI 'http://example.com/awesome/web/service'

    http = Bundler::Persistent::Net::HTTP::Persistent.new 'my_app_name'

    # perform a GET
    response = http.request uri

    # or

    get = Net::HTTP::Get.new uri.request_uri
    response = http.request get

    # create a POST
    post_uri = uri + 'create'
    post = Net::HTTP::Post.new post_uri.path
    post.set_form_data 'some' => 'cool data'

    # perform the POST, the URI is always required
    response http.request post_uri, post

Note that for GET, HEAD and other requests that do not have a body you want to use URI#request_uri not URI#path. The request_uri contains the query params which are sent in the body for other requests.

## SSL¶ ↑

SSL connections are automatically created depending upon the scheme of the `URI`. SSL connections are automatically verified against the default certificate store for your computer. You can override this by changing `verify_mode` or by specifying an alternate cert_store.

Here are the SSL settings, see the individual methods for documentation:

`certificate`

  This client's certificate

`ca_file`

  The certificate-authority

`cert_store`

  An SSL certificate store

`private_key`

  The client's SSL private key

`reuse_ssl_sessions`

  Reuse a previously opened SSL session for a new connection

`ssl_version`

  Which specific SSL version to use

`verify_callback`

  For server certificate verification

`verify_mode`

  How connections should be verified

## Proxies¶ ↑

A proxy can be set through `proxy=` or at initialization time by providing a second argument to `::new`. The proxy may be the `URI` of the proxy server or `:ENV` which will consult environment variables.

See `proxy=` and `proxy_from_env` for details.

## Headers¶ ↑

Headers may be specified for use in every request. `headers` are appended to any headers on the request. `override_headers` replace existing headers on the request.

The difference between the two can be seen in setting the User-Agent. Using `http.headers['User-Agent'] = 'MyUserAgent'` will send “Ruby, MyUserAgent” while `http.override_headers['User-Agent'] = 'MyUserAgent'` will send “MyUserAgent”.

## Tuning¶ ↑

### Segregation¶ ↑

By providing an application name to `::new` you can separate your connections from the connections of other applications.

### Idle `Timeout`¶ ↑

If a connection hasn't been used for this number of seconds it will automatically be reset upon the next use to avoid attempting to send to a closed connection. The default value is 5 seconds. nil means no timeout. `Set` through `idle_timeout`.

Reducing this value may help avoid the “too many connection resets” error when sending non-idempotent requests while increasing this value will cause fewer round-trips.

### Read `Timeout`¶ ↑

The amount of time allowed between reading two chunks from the socket. `Set` through `read_timeout`

### Max Requests¶ ↑

The number of requests that should be made before opening a new connection. Typically many keep-alive capable servers tune this to 100 or less, so the 101st request will fail with ECONNRESET. If unset (default), this value has no effect, if set, connections will be reset on the request after max_requests.

### Open `Timeout`¶ ↑

The amount of time to wait for a connection to be opened. `Set` through `open_timeout`.

### `Socket` Options¶ ↑

`Socket` options may be set on newly-created connections. See `socket_options` for details.

### Non-Idempotent Requests¶ ↑

By default non-idempotent requests will not be retried per RFC 2616. By setting `retry_change_requests` to true requests will automatically be retried once.

Only do this when you know that retrying a POST or other non-idempotent request is safe for your application and will not create duplicate resources.

The recommended way to handle non-idempotent requests is the following:

    require 'bundler/vendor/net-http-persistent/lib/net/http/persistent'

    uri = URI 'http://example.com/awesome/web/service'
    post_uri = uri + 'create'

    http = Bundler::Persistent::Net::HTTP::Persistent.new 'my_app_name'

    post = Net::HTTP::Post.new post_uri.path
    # ... fill in POST request

    begin
      response = http.request post_uri, post
    rescue Bundler::Persistent::Net::HTTP::Persistent::Error

      # POST failed, make a new request to verify the server did not process
      # the request
      exists_uri = uri + '...'
      response = http.get exists_uri

      # Retry if it failed
      retry if response.code == '404'
    end

The method of determining if the resource was created or not is unique to the particular service you are using. Of course, you will want to add protection from infinite looping.

### Connection Termination¶ ↑

If you are done using the `Bundler::Persistent::Net::HTTP::Persistent` instance you may shut down all the connections in the current thread with `shutdown`. This is not recommended for normal use, it should only be used when it will be several minutes before you make another HTTP request.

If you are using multiple threads, call `shutdown` in each thread when the thread is done making requests. If you don't call shutdown, that's OK. Ruby will automatically garbage collect and shutdown your HTTP connections when the thread terminates.

### Constants

VERSION

  The version of `Bundler::Persistent::Net::HTTP::Persistent` you are using

### Attributes

ca_file[R]

An SSL certificate authority. Setting this will set `verify_mode` to VERIFY_PEER.

cert[R]

This client's `OpenSSL::X509::Certificate`

cert_store[R]

An SSL certificate store. Setting this will override the default certificate store. See `verify_mode` for more information.

certificate[R]

This client's `OpenSSL::X509::Certificate`

debug_output[RW]

Sends `debug_output` to this `IO` via `Net::HTTP#set_debug_output`.

Never use this method in production code, it causes a serious security hole.

headers[R]

Headers that are added to every request using Net::HTTP#add_field

http_versions[R]

Maps host:port to an HTTP version. This allows us to enable version specific features.

idle_timeout[RW]

Maximum time an unused connection can remain idle before being automatically closed.

keep_alive[RW]

The value sent in the Keep-Alive header. Defaults to 30. Not needed for HTTP/1.1 servers.

This may not work correctly for HTTP/1.0 servers

This method may be removed in a future version as RFC 2616 does not require this header.

key[R]

This client's SSL private key

max_requests[RW]

Maximum number of requests on a connection before it is considered expired and automatically closed.

name[R]

A name for this connection. Allows you to keep your connections apart from everybody else's.

no_proxy[R]

List of host suffixes which will not be proxied

open_timeout[RW]

Seconds to wait until a connection is opened. See `Net::HTTP#open_timeout`

override_headers[R]

Headers that are added to every request using Net::HTTP#[]=

private_key[R]

This client's SSL private key

proxy_uri[R]

The URL through which requests will be proxied

read_timeout[RW]

Seconds to wait until reading one block. See `Net::HTTP#read_timeout`

retry_change_requests[RW]

Enable retries of non-idempotent requests that change data (e.g. POST requests) when the server has disconnected.

This will in the worst case lead to multiple requests with the same data, but it may be useful for some applications. Take care when enabling this option to ensure it is safe to POST or perform other non-idempotent requests to the server.

reuse_ssl_sessions[RW]

By default SSL sessions are reused to avoid extra SSL handshakes. `Set` this to false if you have problems communicating with an HTTPS server like:

    SSL_connect [...] read finished A: unexpected message (OpenSSL::SSL::SSLError)

socket_options[R]

An array of options for `Socket#setsockopt`.

By default the TCP_NODELAY option is set on sockets.

To set additional options append them to this array:

    http.socket_options << [Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, 1]

ssl_version[R]

SSL version to use.

By default, the version will be negotiated automatically between client and server. Ruby 1.9 and newer only.

verify_callback[R]

SSL verification callback. Used when `ca_file` is set.

verify_mode[R]

HTTPS verify mode. Defaults to OpenSSL::SSL::VERIFY_PEER which verifies the server certificate.

If no `ca_file` or `cert_store` is set the default system certificate store is used.

You can use `verify_mode` to override any default values.

### Public Class Methods

detect_idle_timeout(uri, max = 10) click to toggle source

Use this method to detect the idle timeout of the host at `uri`. The value returned can be used to configure `idle_timeout`. `max` controls the maximum idle timeout to detect.

After

Idle timeout detection is performed by creating a connection then performing a HEAD request in a loop until the connection terminates waiting one additional second per loop.

NOTE: This may not work on ruby > 1.9.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 243
    def self.detect_idle_timeout uri, max = 10
      uri = URI uri unless URI::Generic === uri
      uri += '/'

      req = Net::HTTP::Head.new uri.request_uri

      http = new 'net-http-persistent detect_idle_timeout'

      connection = http.connection_for uri

      sleep_time = 0

      loop do
        response = connection.request req

        $stderr.puts "HEAD #{uri} => #{response.code}" if $DEBUG

        unless Net::HTTPOK === response then
          raise Error, "bad response code #{response.code} detecting idle timeout"
        end

        break if sleep_time >= max

        sleep_time += 1

        $stderr.puts "sleeping #{sleep_time}" if $DEBUG
        sleep sleep_time
      end
    rescue
      # ignore StandardErrors, we've probably found the idle timeout.
    ensure
      http.shutdown

      return sleep_time unless $!
    end

new(name = nil, proxy = nil) click to toggle source

Creates a new `Bundler::Persistent::Net::HTTP::Persistent`.

`Set` `name` to keep your connections apart from everybody else's. Not required currently, but highly recommended. Your library name should be good enough. This parameter will be required in a future version.

`proxy` may be set to a `URI::HTTP` or :ENV to pick up proxy options from the environment. See `proxy_from_env` for details.

In order to use a `URI` for the proxy you may need to do some extra work beyond `URI` parsing if the proxy requires a password:

    proxy = URI 'http://proxy.example'
    proxy.user     = 'AzureDiamond'
    proxy.password = 'hunter2'

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 482
    def initialize name = nil, proxy = nil
      @name = name

      @debug_output     = nil
      @proxy_uri        = nil
      @no_proxy         = []
      @headers          = {}
      @override_headers = {}
      @http_versions    = {}
      @keep_alive       = 30
      @open_timeout     = nil
      @read_timeout     = nil
      @idle_timeout     = 5
      @max_requests     = nil
      @socket_options   = []

      @socket_options << [Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1] if
        Socket.const_defined? :TCP_NODELAY

      key = ['net_http_persistent', name].compact
      @generation_key     = [key, 'generations'    ].join('_').intern
      @ssl_generation_key = [key, 'ssl_generations'].join('_').intern
      @request_key        = [key, 'requests'       ].join('_').intern
      @timeout_key        = [key, 'timeouts'       ].join('_').intern

      @certificate        = nil
      @ca_file            = nil
      @private_key        = nil
      @ssl_version        = nil
      @verify_callback    = nil
      @verify_mode        = nil
      @cert_store         = nil

      @generation         = 0 # incremented when proxy URI changes
      @ssl_generation     = 0 # incremented when SSL session variables change

      if HAVE_OPENSSL then
        @verify_mode        = OpenSSL::SSL::VERIFY_PEER
        @reuse_ssl_sessions = OpenSSL::SSL.const_defined? :Session
      end

      @retry_change_requests = false

      @ruby_1 = RUBY_VERSION < '2'
      @retried_on_ruby_2 = !@ruby_1

      self.proxy = proxy if proxy
    end

### Public Instance Methods

ca_file=(file) click to toggle source

Sets the SSL certificate authority file.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 546
    def ca_file= file
      @ca_file = file

      reconnect_ssl
    end

can_retry?(req, retried_on_ruby_2 = false) click to toggle source

Is the request `req` idempotent or is `retry_change_requests` allowed.

If `retried_on_ruby_2` is true, true will be returned if we are on ruby, `retry_change_requests` is allowed and the request is not idempotent.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 761
    def can_retry? req, retried_on_ruby_2 = false
      return @retry_change_requests && !idempotent?(req) if retried_on_ruby_2

      @retry_change_requests || idempotent?(req)
    end

cert=(certificate)

For `Net::HTTP` parity

Alias for: certificate=
cert_store=(store) click to toggle source

Overrides the default SSL certificate store used for verifying connections.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 556
    def cert_store= store
      @cert_store = store

      reconnect_ssl
    end

certificate=(certificate) click to toggle source

Sets this client's `OpenSSL::X509::Certificate`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 534
    def certificate= certificate
      @certificate = certificate

      reconnect_ssl
    end

Also aliased as: cert=
connection_close?(header) click to toggle source

Workaround for missing `Net::HTTPHeader#connection_close?` on Ruby 1.8

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 771
    def connection_close? header
      header.connection_close?
    end

connection_for(uri) click to toggle source

Creates a new connection for `uri`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 588
    def connection_for uri
      Thread.current[@generation_key]     ||= Hash.new { |h,k| h[k] = {} }
      Thread.current[@ssl_generation_key] ||= Hash.new { |h,k| h[k] = {} }
      Thread.current[@request_key]        ||= Hash.new 0
      Thread.current[@timeout_key]        ||= Hash.new EPOCH

      use_ssl = uri.scheme.downcase == 'https'

      if use_ssl then
        raise Bundler::Persistent::Net::HTTP::Persistent::Error, 'OpenSSL is not available' unless
          HAVE_OPENSSL

        ssl_generation = @ssl_generation

        ssl_cleanup ssl_generation

        connections = Thread.current[@ssl_generation_key][ssl_generation]
      else
        generation = @generation

        cleanup generation

        connections = Thread.current[@generation_key][generation]
      end

      net_http_args = [uri.host, uri.port]
      connection_id = net_http_args.join ':'

      if @proxy_uri and not proxy_bypass? uri.host, uri.port then
        connection_id << @proxy_connection_id
        net_http_args.concat @proxy_args
      else
        net_http_args.concat [nil, nil, nil, nil]
      end

      connection = connections[connection_id]

      unless connection = connections[connection_id] then
        connections[connection_id] = http_class.new(*net_http_args)
        connection = connections[connection_id]
        ssl connection if use_ssl
      else
        reset connection if expired? connection
      end

      start connection unless connection.started?

      connection.read_timeout = @read_timeout if @read_timeout
      connection.keep_alive_timeout = @idle_timeout if @idle_timeout && connection.respond_to?(:keep_alive_timeout=)

      connection
    rescue Errno::ECONNREFUSED
      address = connection.proxy_address || connection.address
      port    = connection.proxy_port    || connection.port

      raise Error, "connection refused: #{address}:#{port}"
    rescue Errno::EHOSTDOWN
      address = connection.proxy_address || connection.address
      port    = connection.proxy_port    || connection.port

      raise Error, "host down: #{address}:#{port}"
    end

connection_keep_alive?(header) click to toggle source

Workaround for missing `Net::HTTPHeader#connection_keep_alive?` on Ruby 1.8

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 778
    def connection_keep_alive? header
      header.connection_keep_alive?
    end

error_message(connection) click to toggle source

Returns an error message containing the number of requests performed on this connection

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 655
    def error_message connection
      requests = Thread.current[@request_key][connection.object_id] - 1 # fixup
      last_use = Thread.current[@timeout_key][connection.object_id]

      age = Time.now - last_use

      "after #{requests} requests on #{connection.object_id}, " \
        "last used #{age} seconds ago"
    end

escape(str) click to toggle source

URI::escape wrapper

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 668
    def escape str
      CGI.escape str if str
    end

expired?(connection) click to toggle source

Returns true if the connection should be reset due to an idle timeout, or maximum request count, false otherwise.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 684
    def expired? connection
      requests = Thread.current[@request_key][connection.object_id]
      return true  if     @max_requests && requests >= @max_requests
      return false unless @idle_timeout
      return true  if     @idle_timeout.zero?

      last_used = Thread.current[@timeout_key][connection.object_id]

      Time.now - last_used > @idle_timeout
    end

finish(connection, thread = Thread.current) click to toggle source

Finishes the `Net::HTTP` `connection`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 716
    def finish connection, thread = Thread.current
      if requests = thread[@request_key] then
        requests.delete connection.object_id
      end

      connection.finish
    rescue IOError
    end

http_version(uri) click to toggle source

Returns the HTTP protocol version for `uri`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 740
    def http_version uri
      @http_versions["#{uri.host}:#{uri.port}"]
    end

idempotent?(req) click to toggle source

Is `req` idempotent according to RFC 2616?

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 747
    def idempotent? req
      case req
      when Net::HTTP::Delete, Net::HTTP::Get, Net::HTTP::Head,
           Net::HTTP::Options, Net::HTTP::Put, Net::HTTP::Trace then
        true
      end
    end

key=(key)

For `Net::HTTP` parity

Alias for: private_key=
normalize_uri(uri) click to toggle source

Adds “http://” to the `String` `uri` if it is missing.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 811
    def normalize_uri uri
      (uri =~ /^https?:/) ? uri : "http://#{uri}"
    end

pipeline(uri, requests) { |responses| ... } click to toggle source

Pipelines `requests` to the HTTP server at `uri` yielding responses if a block is given. Returns all responses received.

See Net::HTTP::Pipeline for further details.

Only if `net-http-pipeline` was required before `net-http-persistent` `pipeline` will be present.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 826
    def pipeline uri, requests, &block # :yields: responses
      connection = connection_for uri

      connection.pipeline requests, &block
    end

private_key=(key) click to toggle source

Sets this client's SSL private key

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 835
    def private_key= key
      @private_key = key

      reconnect_ssl
    end

Also aliased as: key=
proxy=(proxy) click to toggle source

Sets the proxy server. The `proxy` may be the `URI` of the proxy server, the symbol `:ENV` which will read the proxy from the environment or nil to disable use of a proxy. See `proxy_from_env` for details on setting the proxy from the environment.

If the proxy `URI` is set after requests have been made, the next request will shut-down and re-open all connections.

The `no_proxy` query parameter can be used to specify hosts which shouldn't be reached via proxy; if set it should be a comma separated list of hostname suffixes, optionally with `:port` appended, for example `example.com,some.host:8080`.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 858
    def proxy= proxy
      @proxy_uri = case proxy
                   when :ENV      then proxy_from_env
                   when URI::HTTP then proxy
                   when nil       then # ignore
                   else raise ArgumentError, 'proxy must be :ENV or a URI::HTTP'
                   end

      @no_proxy.clear

      if @proxy_uri then
        @proxy_args = [
          @proxy_uri.host,
          @proxy_uri.port,
          unescape(@proxy_uri.user),
          unescape(@proxy_uri.password),
        ]

        @proxy_connection_id = [nil, *@proxy_args].join ':'

        if @proxy_uri.query then
          @no_proxy = CGI.parse(@proxy_uri.query)['no_proxy'].join(',').downcase.split(',').map { |x| x.strip }.reject { |x| x.empty? }
        end
      end

      reconnect
      reconnect_ssl
    end

proxy_bypass?(host, port) click to toggle source

Returns true when proxy should by bypassed for host.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 932
    def proxy_bypass? host, port
      host = host.downcase
      host_port = [host, port].join ':'

      @no_proxy.each do |name|
        return true if host[-name.length, name.length] == name or
           host_port[-name.length, name.length] == name
      end

      false
    end

proxy_from_env() click to toggle source

Creates a `URI` for an HTTP proxy server from `ENV` variables.

If `HTTP_PROXY` is set a proxy will be returned.

If `HTTP_PROXY_USER` or `HTTP_PROXY_PASS` are set the `URI` is given the indicated user and password unless HTTP_PROXY contains either of these in the `URI`.

The `NO_PROXY` `ENV` variable can be used to specify hosts which shouldn't be reached via proxy; if set it should be a comma separated list of hostname suffixes, optionally with `:port` appended, for example `example.com,some.host:8080`. When set to `*` no proxy will be returned.

For Windows users, lowercase `ENV` variables are preferred over uppercase `ENV` variables.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 905
    def proxy_from_env
      env_proxy = ENV['http_proxy'] || ENV['HTTP_PROXY']

      return nil if env_proxy.nil? or env_proxy.empty?

      uri = URI normalize_uri env_proxy

      env_no_proxy = ENV['no_proxy'] || ENV['NO_PROXY']

      # '*' is special case for always bypass
      return nil if env_no_proxy == '*'

      if env_no_proxy then
        uri.query = "no_proxy=#{escape(env_no_proxy)}"
      end

      unless uri.user or uri.password then
        uri.user     = escape ENV['http_proxy_user'] || ENV['HTTP_PROXY_USER']
        uri.password = escape ENV['http_proxy_pass'] || ENV['HTTP_PROXY_PASS']
      end

      uri
    end

reconnect() click to toggle source

Forces reconnection of HTTP connections.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 947
    def reconnect
      @generation += 1
    end

reconnect_ssl() click to toggle source

Forces reconnection of SSL connections.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 954
    def reconnect_ssl
      @ssl_generation += 1
    end

request(uri, req = nil, &block) click to toggle source

Makes a request on `uri`. If `req` is nil a `Net::HTTP::Get` is performed against `uri`.

If a block is passed `request` behaves like `Net::HTTP#request` (the body of the response will not have been read).

`req` must be a `Net::HTTPRequest` subclass (see `Net::HTTP` for a list).

If there is an error and the request is idempotent according to RFC 2616 it will be retried automatically.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 990
    def request uri, req = nil, &block
      retried      = false
      bad_response = false

      req = request_setup req || uri

      connection = connection_for uri
      connection_id = connection.object_id

      begin
        Thread.current[@request_key][connection_id] += 1
        response = connection.request req, &block

        if connection_close?(req) or
           (response.http_version <= '1.0' and
            not connection_keep_alive?(response)) or
           connection_close?(response) then
          connection.finish
        end
      rescue Net::HTTPBadResponse => e
        message = error_message connection

        finish connection

        raise Error, "too many bad responses #{message}" if
          bad_response or not can_retry? req

        bad_response = true
        retry
      rescue *RETRIED_EXCEPTIONS => e # retried on ruby 2
        request_failed e, req, connection if
          retried or not can_retry? req, @retried_on_ruby_2

        reset connection

        retried = true
        retry
      rescue Errno::EINVAL, Errno::ETIMEDOUT => e # not retried on ruby 2
        request_failed e, req, connection if retried or not can_retry? req

        reset connection

        retried = true
        retry
      rescue Exception => e
        finish connection

        raise
      ensure
        Thread.current[@timeout_key][connection_id] = Time.now
      end

      @http_versions["#{uri.host}:#{uri.port}"] ||= response.http_version

      response
    end

reset(connection) click to toggle source

Finishes then restarts the `Net::HTTP` `connection`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 961
    def reset connection
      Thread.current[@request_key].delete connection.object_id
      Thread.current[@timeout_key].delete connection.object_id

      finish connection

      start connection
    rescue Errno::ECONNREFUSED
      e = Error.new "connection refused: #{connection.address}:#{connection.port}"
      e.set_backtrace $@
      raise e
    rescue Errno::EHOSTDOWN
      e = Error.new "host down: #{connection.address}:#{connection.port}"
      e.set_backtrace $@
      raise e
    end

shutdown(thread = Thread.current) click to toggle source

Shuts down all connections for `thread`.

Uses the current thread by default.

If you've used `Bundler::Persistent::Net::HTTP::Persistent` across multiple threads you should call this in each thread when you're done making HTTP requests.

NOTE: Calling shutdown for another thread can be dangerous!

If the thread is still using the connection it may cause an error! It is best to call `shutdown` in the thread at the appropriate time instead!

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 1105
    def shutdown thread = Thread.current
      generation = reconnect
      cleanup generation, thread, @generation_key

      ssl_generation = reconnect_ssl
      cleanup ssl_generation, thread, @ssl_generation_key

      thread[@request_key] = nil
      thread[@timeout_key] = nil
    end

shutdown_in_all_threads() click to toggle source

Shuts down all connections in all threads

NOTE: THIS METHOD IS VERY DANGEROUS!

Do not call this method if other threads are still using their connections! Call `shutdown` at the appropriate time instead!

Use this method only as a last resort!

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 1126
    def shutdown_in_all_threads
      Thread.list.each do |thread|
        shutdown thread
      end

      nil
    end

ssl(connection) click to toggle source

Enables SSL on `connection`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 1137
      def ssl connection
        connection.use_ssl = true

        connection.ssl_version = @ssl_version if @ssl_version

        connection.verify_mode = @verify_mode

        if OpenSSL::SSL::VERIFY_PEER == OpenSSL::SSL::VERIFY_NONE and
           not Object.const_defined?(:I_KNOW_THAT_OPENSSL_VERIFY_PEER_EQUALS_VERIFY_NONE_IS_WRONG) then
          warn <<-WARNING
                                 !!!SECURITY WARNING!!!

    The SSL HTTP connection to:

      #{connection.address}:#{connection.port}

                               !!!MAY NOT BE VERIFIED!!!

    On your platform your OpenSSL implementation is broken.

    There is no difference between the values of VERIFY_NONE and VERIFY_PEER.

    This means that attempting to verify the security of SSL connections may not
    work.  This exposes you to man-in-the-middle exploits, snooping on the
    contents of your connection and other dangers to the security of your data.

    To disable this warning define the following constant at top-level in your
    application:

      I_KNOW_THAT_OPENSSL_VERIFY_PEER_EQUALS_VERIFY_NONE_IS_WRONG = nil

          WARNING
        end

        if @ca_file then
          connection.ca_file = @ca_file
          connection.verify_mode = OpenSSL::SSL::VERIFY_PEER
          connection.verify_callback = @verify_callback if @verify_callback
        end

        if @certificate and @private_key then
          connection.cert = @certificate
          connection.key  = @private_key
        end

        connection.cert_store = if @cert_store then
                                  @cert_store
                                else
                                  store = OpenSSL::X509::Store.new
                                  store.set_default_paths
                                  store
                                end
      end

ssl_version=(ssl_version) click to toggle source

SSL version to use

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 1202
    def ssl_version= ssl_version
      @ssl_version = ssl_version

      reconnect_ssl
    end

start(connection) click to toggle source

Starts the `Net::HTTP` `connection`

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 698
    def start connection
      connection.set_debug_output @debug_output if @debug_output
      connection.open_timeout = @open_timeout if @open_timeout

      connection.start

      socket = connection.instance_variable_get :@socket

      if socket then # for fakeweb
        @socket_options.each do |option|
          socket.io.setsockopt(*option)
        end
      end
    end

unescape(str) click to toggle source

URI::unescape wrapper

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 675
    def unescape str
      CGI.unescape str if str
    end

verify_callback=(callback) click to toggle source

SSL verification callback.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 1224
    def verify_callback= callback
      @verify_callback = callback

      reconnect_ssl
    end

verify_mode=(verify_mode) click to toggle source

Sets the HTTPS verify mode. Defaults to OpenSSL::SSL::VERIFY_PEER.

Setting this to VERIFY_NONE is a VERY BAD IDEA and should NEVER be used. Securely transfer the correct certificate and update the default certificate store or set the ca file instead.

    # File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 1215
    def verify_mode= verify_mode
      @verify_mode = verify_mode

      reconnect_ssl
    end