class Net::HTTP::Persistent

Persistent connections for Net::HTTP

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.

Connections will be shared across threads through a connection pool to increase reuse of connections.

You can shut down any remaining HTTP connections when done by calling shutdown.

Example:

require 'net/http/persistent'

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

http = Net::HTTP::Persistent.new

# 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.

TLS/SSL

TLS connections are automatically created depending upon the scheme of the URI. TLS 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 TLS settings, see the individual methods for documentation:

certificate

This client's certificate

ca_file

The certificate-authorities

ca_path

Directory with certificate-authorities

cert_store

An SSL certificate store

ciphers

List of SSl ciphers allowed

private_key

The client's SSL private key

reuse_ssl_sessions

Reuse a previously opened SSL session for a new connection

ssl_timeout

Session lifetime

ssl_version

Which specific SSL version to use

verify_callback

For server certificate verification

verify_depth

Depth of 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

Each Net::HTTP::Persistent instance has its own pool of connections. There is no sharing with other instances (as was true in earlier versions).

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.

Connection Termination

If you are done using the 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

DEFAULT_POOL_SIZE
VERSION

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

Attributes

ca_file[R]

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

ca_path[R]

A directory of SSL certificates to be used as certificate authorities. 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

ciphers[R]

The ciphers allowed for SSL connections

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.

max_retries[R]

Number of retries to perform if a request fails.

See also max_retries=, Net::HTTP#max_retries=.

max_version[R]

Maximum SSL version to use, e.g. :TLS1_2

By default, the version will be negotiated automatically between client and server. Ruby 2.5 and newer only.

min_version[R]

Minimum SSL version to use, e.g. :TLS1_1

By default, the version will be negotiated automatically between client and server. Ruby 2.5 and newer only.

name[R]

The name for this collection of persistent connections.

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

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_timeout[R]

SSL session lifetime

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. Deprecated since Ruby 2.5.

verify_callback[R]

SSL verification callback. Used when ca_file or ca_path is set.

verify_depth[R]

Sets the depth of SSL certificate verification

verify_mode[R]

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

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

You can use verify_mode to override any default values.

write_timeout[RW]

Seconds to wait until writing one block. See Net::HTTP#write_timeout

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/net/http/persistent.rb, line 197
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'

  http.connection_for uri do |connection|
    sleep_time = 0

    http = connection.http

    loop do
      response = http.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
  end
rescue
  # ignore StandardErrors, we've probably found the idle timeout.
ensure
  return sleep_time unless $!
end
new(name: nil, proxy: nil, pool_size: DEFAULT_POOL_SIZE) click to toggle source

Creates a new Net::HTTP::Persistent.

Set a name for fun. Your library name should be good enough, but this otherwise has no purpose.

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'

Set pool_size to limit the maximum number of connections allowed. Defaults to 1/4 the number of allowed file handles or 256 if your OS does not support a limit on allowed file handles. You can have no more than this many threads with active HTTP transactions.

# File lib/net/http/persistent.rb, line 471
def initialize name: nil, proxy: nil, pool_size: DEFAULT_POOL_SIZE
  @name = name

  @debug_output     = nil
  @proxy_uri        = nil
  @no_proxy         = []
  @headers          = {}
  @override_headers = {}
  @http_versions    = {}
  @keep_alive       = 30
  @open_timeout     = nil
  @read_timeout     = nil
  @write_timeout    = nil
  @idle_timeout     = 5
  @max_requests     = nil
  @max_retries      = 1
  @socket_options   = []
  @ssl_generation   = 0 # incremented when SSL session variables change

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

  @pool = Net::HTTP::Persistent::Pool.new size: pool_size do |http_args|
    Net::HTTP::Persistent::Connection.new Net::HTTP, http_args, @ssl_generation
  end

  @certificate        = nil
  @ca_file            = nil
  @ca_path            = nil
  @ciphers            = nil
  @private_key        = nil
  @ssl_timeout        = nil
  @ssl_version        = nil
  @min_version        = nil
  @max_version        = nil
  @verify_callback    = nil
  @verify_depth       = nil
  @verify_mode        = nil
  @cert_store         = nil

  @generation         = 0 # incremented when proxy URI changes

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

  self.proxy = proxy if proxy
end

Public Instance Methods

ca_file=(file) click to toggle source

Sets the SSL certificate authority file.

# File lib/net/http/persistent.rb, line 536
def ca_file= file
  @ca_file = file

  reconnect_ssl
end
ca_path=(path) click to toggle source

Sets the SSL certificate authority path.

# File lib/net/http/persistent.rb, line 545
def ca_path= path
  @ca_path = path

  reconnect_ssl
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/net/http/persistent.rb, line 555
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/net/http/persistent.rb, line 524
def certificate= certificate
  @certificate = certificate

  reconnect_ssl
end
Also aliased as: cert=
ciphers=(ciphers) click to toggle source

The ciphers allowed for SSL connections

# File lib/net/http/persistent.rb, line 564
def ciphers= ciphers
  @ciphers = ciphers

  reconnect_ssl
end
connection_for(uri) { |connection| ... } click to toggle source

Creates a new connection for uri

# File lib/net/http/persistent.rb, line 573
def connection_for uri
  use_ssl = uri.scheme.downcase == 'https'

  net_http_args = [uri.hostname, uri.port]

  # I'm unsure if uri.host or uri.hostname should be checked against
  # the proxy bypass list.
  if @proxy_uri and not proxy_bypass? uri.host, uri.port then
    net_http_args.concat @proxy_args
  else
    net_http_args.concat [nil, nil, nil, nil]
  end

  connection = @pool.checkout net_http_args

  http = connection.http

  connection.ressl @ssl_generation if
    connection.ssl_generation != @ssl_generation

  if not http.started? then
    ssl   http if use_ssl
    start http
  elsif expired? connection then
    reset connection
  end

  http.keep_alive_timeout = @idle_timeout  if @idle_timeout
  http.max_retries        = @max_retries   if http.respond_to?(:max_retries=)
  http.read_timeout       = @read_timeout  if @read_timeout
  http.write_timeout      = @write_timeout if
    @write_timeout && http.respond_to?(:write_timeout=)

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

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

  raise Error, "host down: #{address}:#{port}"
ensure
  @pool.checkin net_http_args
end
escape(str) click to toggle source

CGI::escape wrapper

# File lib/net/http/persistent.rb, line 624
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/net/http/persistent.rb, line 640
def expired? connection
  return true  if     @max_requests && connection.requests >= @max_requests
  return false unless @idle_timeout
  return true  if     @idle_timeout.zero?

  Time.now - connection.last_use > @idle_timeout
end
finish(connection) click to toggle source

Finishes the Net::HTTP connection

# File lib/net/http/persistent.rb, line 669
def finish connection
  connection.finish

  connection.http.instance_variable_set :@last_communicated, nil
  connection.http.instance_variable_set :@ssl_session, nil unless
    @reuse_ssl_sessions
end
http_version(uri) click to toggle source

Returns the HTTP protocol version for uri

# File lib/net/http/persistent.rb, line 680
def http_version uri
  @http_versions["#{uri.hostname}:#{uri.port}"]
end
key=(key)

For Net::HTTP parity

Alias for: private_key=
max_retries=(retries) click to toggle source

Set the maximum number of retries for a request.

Defaults to one retry.

Set this to 0 to disable retries.

# File lib/net/http/persistent.rb, line 698
def max_retries= retries
  retries = retries.to_int

  raise ArgumentError, "max_retries must be positive" if retries < 0

  @max_retries = retries

  reconnect
end
max_version=(max_version) click to toggle source

maximum SSL version to use

# File lib/net/http/persistent.rb, line 1048
def max_version= max_version
  @max_version = max_version

  reconnect_ssl
end
min_version=(min_version) click to toggle source

Minimum SSL version to use

# File lib/net/http/persistent.rb, line 1039
def min_version= min_version
  @min_version = min_version

  reconnect_ssl
end
normalize_uri(uri) click to toggle source

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

# File lib/net/http/persistent.rb, line 687
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/net/http/persistent.rb, line 719
def pipeline uri, requests, &block # :yields: responses
  connection_for uri do |connection|
    connection.http.pipeline requests, &block
  end
end
private_key=(key) click to toggle source

Sets this client's SSL private key

# File lib/net/http/persistent.rb, line 728
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/net/http/persistent.rb, line 751
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.hostname,
      @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/net/http/persistent.rb, line 825
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/net/http/persistent.rb, line 798
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 all HTTP connections, including TLS/SSL connections.

# File lib/net/http/persistent.rb, line 841
def reconnect
  @generation += 1
end
reconnect_ssl() click to toggle source

Forces reconnection of only TLS/SSL connections.

# File lib/net/http/persistent.rb, line 848
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::HTTPGenericRequest subclass (see Net::HTTP for a list).

# File lib/net/http/persistent.rb, line 880
def request uri, req = nil, &block
  uri      = URI uri
  req      = request_setup req || uri
  response = nil

  connection_for uri do |connection|
    http = connection.http

    begin
      connection.requests += 1

      response = http.request req, &block

      if req.connection_close? or
        (response.http_version <= '1.0' and
          not response.connection_keep_alive?) or
          response.connection_close? then
        finish connection
      end
    rescue Exception # make sure to close the connection when it was interrupted
      finish connection

      raise
    ensure
      connection.last_use = Time.now
    end
  end

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

  response
end
reset(connection) click to toggle source

Finishes then restarts the Net::HTTP connection

# File lib/net/http/persistent.rb, line 855
def reset connection
  http = connection.http

  finish connection

  start http
rescue Errno::ECONNREFUSED
  e = Error.new "connection refused: #{http.address}:#{http.port}"
  e.set_backtrace $@
  raise e
rescue Errno::EHOSTDOWN
  e = Error.new "host down: #{http.address}:#{http.port}"
  e.set_backtrace $@
  raise e
end
shutdown() click to toggle source

Shuts down all connections

NOTE: Calling shutdown for can be dangerous!

If any thread is still using a connection it may cause an error! Call shutdown when you are completely done making requests!

# File lib/net/http/persistent.rb, line 950
def shutdown
  @pool.shutdown { |http| http.finish }
end
ssl(connection) click to toggle source

Enables SSL on connection

# File lib/net/http/persistent.rb, line 957
  def ssl connection
    connection.use_ssl = true

    connection.ciphers     = @ciphers     if @ciphers
    connection.ssl_timeout = @ssl_timeout if @ssl_timeout
    connection.ssl_version = @ssl_version if @ssl_version
    connection.min_version = @min_version if @min_version
    connection.max_version = @max_version if @max_version

    connection.verify_depth = @verify_depth
    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

    connection.ca_file = @ca_file if @ca_file
    connection.ca_path = @ca_path if @ca_path

    if @ca_file or @ca_path then
      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_timeout=(ssl_timeout) click to toggle source

SSL session lifetime

# File lib/net/http/persistent.rb, line 1021
def ssl_timeout= ssl_timeout
  @ssl_timeout = ssl_timeout

  reconnect_ssl
end
ssl_version=(ssl_version) click to toggle source

SSL version to use

# File lib/net/http/persistent.rb, line 1030
def ssl_version= ssl_version
  @ssl_version = ssl_version

  reconnect_ssl
end
start(http) click to toggle source

Starts the Net::HTTP connection

# File lib/net/http/persistent.rb, line 651
def start http
  http.set_debug_output @debug_output if @debug_output
  http.open_timeout = @open_timeout if @open_timeout

  http.start

  socket = http.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

CGI::unescape wrapper

# File lib/net/http/persistent.rb, line 631
def unescape str
  CGI.unescape str if str
end
verify_callback=(callback) click to toggle source

SSL verification callback.

# File lib/net/http/persistent.rb, line 1079
def verify_callback= callback
  @verify_callback = callback

  reconnect_ssl
end
verify_depth=(verify_depth) click to toggle source

Sets the depth of SSL certificate verification

# File lib/net/http/persistent.rb, line 1057
def verify_depth= verify_depth
  @verify_depth = verify_depth

  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/net/http/persistent.rb, line 1070
def verify_mode= verify_mode
  @verify_mode = verify_mode

  reconnect_ssl
end