Class: OverSIP::SIP::NonInviteServerTransaction

Inherits:
ServerTransaction show all
Defined in:
lib/oversip/sip/server_transaction.rb

Instance Attribute Summary

Attributes inherited from ServerTransaction

#core, #last_response, #request, #state

Instance Method Summary collapse

Methods inherited from ServerTransaction

#retransmit_last_response

Methods included from Logger

fg_system_msg2str, load_methods, #log_id

Constructor Details

#initialize(request) ⇒ NonInviteServerTransaction

Returns a new instance of NonInviteServerTransaction.



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# File 'lib/oversip/sip/server_transaction.rb', line 193

def initialize request
  super
  @request.connection.class.non_invite_server_transactions[@transaction_id] = self

  @log_id = "NIST #{@transaction_id}"
  # Can be :trying, :proceeding, :completed or :terminated.
  @state = :trying

  start_timer_INT1
end

Instance Method Details

#receive_response(status_code) ⇒ Object 



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# File 'lib/oversip/sip/server_transaction.rb', line 236

def receive_response(status_code)
  # Provisional response
  if status_code < 200
    case @state
    when :trying
      @state = :proceeding
      return true
    when :proceeding
      return true
    when :completed, :terminated
      log_system_notice "attempt to send a provisional response while in #{@state} state"
      return false
    end

  # Final response.
  else
    case @state
    when :trying, :proceeding
      @timer_INT1.cancel
      @timer_INT2.cancel  if @timer_INT2
      @state = :completed
      if @request.transport == :udp
        start_timer_J
      else
        terminate_transaction
      end
      return true
    when :completed, :terminated
      log_system_notice "attempt to send a final response while in #{@state} state"
      return false
    end
  end
end

#start_timer_INT1 ⇒ Object

RFC 4320 - Section 4.1.



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# File 'lib/oversip/sip/server_transaction.rb', line 205

def start_timer_INT1
  @timer_INT1 = ::EM::Timer.new(INT1) do
    unless @last_response
      log_system_debug "no final response within #{INT1} seconds => 100"  if $oversip_debug
      @request.reply 100, "I'm alive"
    end
    start_timer_INT2
  end
end

#start_timer_INT2 ⇒ Object

RFC 4320 - Section 4.2.



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# File 'lib/oversip/sip/server_transaction.rb', line 216

def start_timer_INT2
  @timer_INT2 = ::EM::Timer.new(INT2) do
    log_system_debug "no final response within #{INT1+INT2} seconds, transaction terminated"  if $oversip_debug
    terminate_transaction
  end
end

#start_timer_J ⇒ Object 



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# File 'lib/oversip/sip/server_transaction.rb', line 223

def start_timer_J
  ::EM.add_timer(TIMER_J_UDP) do
    log_system_debug "timer J expires, transaction terminated"  if $oversip_debug
    terminate_transaction
  end
end

#terminate_transaction ⇒ Object

Terminate current transaction and delete from the list of transactions.



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# File 'lib/oversip/sip/server_transaction.rb', line 231

def terminate_transaction
  @state = :terminated
  @request.connection.class.non_invite_server_transactions.delete(@transaction_id)
end

#valid_response?(status_code) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/oversip/sip/server_transaction.rb', line 270

def valid_response? status_code
  # Provisional response
  if status_code < 200
    case @state
    when :trying
      return true
    when :proceeding
      return true
    when :completed, :terminated
      return false
    end

  # Final response.
  else
    case @state
    when :trying, :proceeding
      return true
    when :completed, :terminated
      return false
    end
  end
end