From 03e473a36dc489f1c3a58f6f89aa2b9c0ae6b1b6 Mon Sep 17 00:00:00 2001
From: Laszlo Papp <laszlo.papp@sumup.com>
Date: Fri, 8 Nov 2013 16:20:47 +0000
Subject: [PATCH 1/4] Sms can be longer than 127 characters

---
 lib/smpp/pdu/base.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/smpp/pdu/base.rb b/lib/smpp/pdu/base.rb
index 73f3281..13c9127 100644
--- a/lib/smpp/pdu/base.rb
+++ b/lib/smpp/pdu/base.rb
@@ -88,7 +88,11 @@ def initialize(command_id, command_status, seq, body='')
       @command_status = command_status
       @body = body
       @sequence_number = seq
-      @data = fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq) + body   
+      if RUBY_VERSION < 1.9
+        @data = fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq) + body
+      else
+        @data =  (fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq)).force_encoding("BINARY") + body.force_encoding("BINARY")
+      end
     end      
 
     def logger

From ca5cc6e62080407e05ca79d3934e97c527fcaa06 Mon Sep 17 00:00:00 2001
From: Laszlo Papp <laszlo.papp@sumup.com>
Date: Fri, 8 Nov 2013 17:29:09 +0000
Subject: [PATCH 2/4] Compare string with string.

---
 lib/smpp/pdu/base.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/smpp/pdu/base.rb b/lib/smpp/pdu/base.rb
index 13c9127..0be1dc6 100644
--- a/lib/smpp/pdu/base.rb
+++ b/lib/smpp/pdu/base.rb
@@ -88,7 +88,7 @@ def initialize(command_id, command_status, seq, body='')
       @command_status = command_status
       @body = body
       @sequence_number = seq
-      if RUBY_VERSION < 1.9
+      if RUBY_VERSION < "1.9"
         @data = fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq) + body
       else
         @data =  (fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq)).force_encoding("BINARY") + body.force_encoding("BINARY")

From 23fb4875e6f2d5789d95cbfd50293b067f3c7b9c Mon Sep 17 00:00:00 2001
From: Laszlo Papp <laszlo.papp@sumup.com>
Date: Tue, 12 Nov 2013 11:07:28 +0000
Subject: [PATCH 3/4] Using UTF-8 encoding to be able to send messages longer
 than 255 chars.

---
 lib/smpp/pdu/base.rb      | 2 +-
 lib/smpp/pdu/submit_sm.rb | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/smpp/pdu/base.rb b/lib/smpp/pdu/base.rb
index 0be1dc6..e66e76e 100644
--- a/lib/smpp/pdu/base.rb
+++ b/lib/smpp/pdu/base.rb
@@ -91,7 +91,7 @@ def initialize(command_id, command_status, seq, body='')
       if RUBY_VERSION < "1.9"
         @data = fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq) + body
       else
-        @data =  (fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq)).force_encoding("BINARY") + body.force_encoding("BINARY")
+        @data =  (fixed_int(length) + fixed_int(command_id) + fixed_int(command_status) + fixed_int(seq)).force_encoding("UTF-8") + body.force_encoding("UTF-8")
       end
     end      
 
diff --git a/lib/smpp/pdu/submit_sm.rb b/lib/smpp/pdu/submit_sm.rb
index edf7fdc..8d7f2b4 100644
--- a/lib/smpp/pdu/submit_sm.rb
+++ b/lib/smpp/pdu/submit_sm.rb
@@ -1,3 +1,5 @@
+# -*- encoding : utf-8 -*-
+
 # Sending an MT message
 class Smpp::Pdu::SubmitSm < Smpp::Pdu::Base
   handles_cmd SUBMIT_SM

From 4400f15b8430ee31526b42e5862b9051f31f0977 Mon Sep 17 00:00:00 2001
From: Laszlo Papp <laszlo.papp@sumup.com>
Date: Wed, 5 Feb 2014 10:27:37 +0000
Subject: [PATCH 4/4] Added UTF-8 sentinels

---
 config/environment.rb                     | 1 +
 examples/sample_gateway.rb                | 1 +
 examples/sample_smsc.rb                   | 1 +
 lib/smpp.rb                               | 1 +
 lib/smpp/base.rb                          | 1 +
 lib/smpp/encoding/utf8_encoder.rb         | 1 +
 lib/smpp/optional_parameter.rb            | 1 +
 lib/smpp/pdu/base.rb                      | 1 +
 lib/smpp/pdu/bind_base.rb                 | 1 +
 lib/smpp/pdu/bind_receiver.rb             | 1 +
 lib/smpp/pdu/bind_receiver_response.rb    | 1 +
 lib/smpp/pdu/bind_resp_base.rb            | 1 +
 lib/smpp/pdu/bind_transceiver.rb          | 1 +
 lib/smpp/pdu/bind_transceiver_response.rb | 1 +
 lib/smpp/pdu/bind_transmitter.rb          | 1 +
 lib/smpp/pdu/bind_transmitter_response.rb | 1 +
 lib/smpp/pdu/deliver_sm.rb                | 1 +
 lib/smpp/pdu/deliver_sm_response.rb       | 1 +
 lib/smpp/pdu/enquire_link.rb              | 1 +
 lib/smpp/pdu/enquire_link_response.rb     | 1 +
 lib/smpp/pdu/generic_nack.rb              | 1 +
 lib/smpp/pdu/submit_multi.rb              | 1 +
 lib/smpp/pdu/submit_multi_response.rb     | 1 +
 lib/smpp/pdu/submit_sm_response.rb        | 1 +
 lib/smpp/pdu/unbind.rb                    | 1 +
 lib/smpp/pdu/unbind_response.rb           | 1 +
 lib/smpp/receiver.rb                      | 1 +
 lib/smpp/server.rb                        | 1 +
 lib/smpp/transceiver.rb                   | 1 +
 lib/smpp/transmitter.rb                   | 1 +
 lib/smpp/version.rb                       | 1 +
 lib/sms.rb                                | 3 ++-
 test/delegate.rb                          | 1 +
 test/encoding_test.rb                     | 1 +
 test/optional_parameter_test.rb           | 1 +
 test/pdu_parsing_test.rb                  | 1 +
 test/receiver_test.rb                     | 1 +
 test/responsive_delegate.rb               | 1 +
 test/server.rb                            | 1 +
 test/smpp_test.rb                         | 1 +
 test/submit_sm_test.rb                    | 1 +
 test/transceiver_test.rb                  | 1 +
 42 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/config/environment.rb b/config/environment.rb
index 3b7b109..6c018f3 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,2 +1,3 @@
+# -*- encoding : utf-8 -*-
 require "rubygems"
 require "bundler/setup"
diff --git a/examples/sample_gateway.rb b/examples/sample_gateway.rb
index 86b3a31..9e48fde 100755
--- a/examples/sample_gateway.rb
+++ b/examples/sample_gateway.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 #!/usr/bin/env ruby
 
 # Sample SMS gateway that can receive MOs (mobile originated messages) and
diff --git a/examples/sample_smsc.rb b/examples/sample_smsc.rb
index 5f38568..2342cd3 100755
--- a/examples/sample_smsc.rb
+++ b/examples/sample_smsc.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 #!/usr/bin/env ruby
 
 # Sample SMPP SMS Gateway. 
diff --git a/lib/smpp.rb b/lib/smpp.rb
index 2ec90bc..4e8f8d2 100644
--- a/lib/smpp.rb
+++ b/lib/smpp.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # SMPP v3.4 subset implementation.
 # SMPP is a short message peer-to-peer protocol typically used to communicate
 # with SMS Centers (SMSCs) over TCP/IP.
diff --git a/lib/smpp/base.rb b/lib/smpp/base.rb
index 0d2c904..213fcc7 100644
--- a/lib/smpp/base.rb
+++ b/lib/smpp/base.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'timeout'
 require 'scanf'
 require 'monitor'
diff --git a/lib/smpp/encoding/utf8_encoder.rb b/lib/smpp/encoding/utf8_encoder.rb
index 241cb1c..0b01963 100644
--- a/lib/smpp/encoding/utf8_encoder.rb
+++ b/lib/smpp/encoding/utf8_encoder.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'iconv'
 
 module Smpp
diff --git a/lib/smpp/optional_parameter.rb b/lib/smpp/optional_parameter.rb
index 1b85417..6f68b30 100644
--- a/lib/smpp/optional_parameter.rb
+++ b/lib/smpp/optional_parameter.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::OptionalParameter
 
   attr_reader :tag, :value
diff --git a/lib/smpp/pdu/base.rb b/lib/smpp/pdu/base.rb
index e66e76e..6b88362 100644
--- a/lib/smpp/pdu/base.rb
+++ b/lib/smpp/pdu/base.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # PDUs are the protcol base units in SMPP
 module Smpp::Pdu
   class Base
diff --git a/lib/smpp/pdu/bind_base.rb b/lib/smpp/pdu/bind_base.rb
index aac4cfa..fb8a50a 100644
--- a/lib/smpp/pdu/bind_base.rb
+++ b/lib/smpp/pdu/bind_base.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # this class serves as the base for all the bind* commands.
 # since the command format remains the same for all bind commands, 
 # sub classes just change the @@command_id
diff --git a/lib/smpp/pdu/bind_receiver.rb b/lib/smpp/pdu/bind_receiver.rb
index a551004..834d26e 100644
--- a/lib/smpp/pdu/bind_receiver.rb
+++ b/lib/smpp/pdu/bind_receiver.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindReceiver < Smpp::Pdu::BindBase
   @command_id = BIND_RECEIVER
   handles_cmd BIND_RECEIVER
diff --git a/lib/smpp/pdu/bind_receiver_response.rb b/lib/smpp/pdu/bind_receiver_response.rb
index a5ca7dd..c19f87b 100644
--- a/lib/smpp/pdu/bind_receiver_response.rb
+++ b/lib/smpp/pdu/bind_receiver_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindReceiverResponse < Smpp::Pdu::BindRespBase
   @command_id = BIND_RECEIVER_RESP
   handles_cmd BIND_RECEIVER_RESP
diff --git a/lib/smpp/pdu/bind_resp_base.rb b/lib/smpp/pdu/bind_resp_base.rb
index 4395d77..0ca5b17 100644
--- a/lib/smpp/pdu/bind_resp_base.rb
+++ b/lib/smpp/pdu/bind_resp_base.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindRespBase < Smpp::Pdu::Base
   class << self; attr_accessor :command_id ; end
   attr_accessor :system_id
diff --git a/lib/smpp/pdu/bind_transceiver.rb b/lib/smpp/pdu/bind_transceiver.rb
index cf60a85..26d0923 100644
--- a/lib/smpp/pdu/bind_transceiver.rb
+++ b/lib/smpp/pdu/bind_transceiver.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindTransceiver < Smpp::Pdu::BindBase
   @command_id = BIND_TRANSCEIVER
   handles_cmd BIND_TRANSCEIVER
diff --git a/lib/smpp/pdu/bind_transceiver_response.rb b/lib/smpp/pdu/bind_transceiver_response.rb
index 711613e..17ba166 100644
--- a/lib/smpp/pdu/bind_transceiver_response.rb
+++ b/lib/smpp/pdu/bind_transceiver_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindTransceiverResponse < Smpp::Pdu::BindRespBase
   @command_id = BIND_TRANSCEIVER_RESP
   handles_cmd BIND_TRANSCEIVER_RESP
diff --git a/lib/smpp/pdu/bind_transmitter.rb b/lib/smpp/pdu/bind_transmitter.rb
index 411d6a9..5128500 100644
--- a/lib/smpp/pdu/bind_transmitter.rb
+++ b/lib/smpp/pdu/bind_transmitter.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindTransmitter < Smpp::Pdu::BindBase
   @command_id = BIND_TRANSMITTER
   handles_cmd BIND_TRANSMITTER
diff --git a/lib/smpp/pdu/bind_transmitter_response.rb b/lib/smpp/pdu/bind_transmitter_response.rb
index 185dab4..0c0a485 100644
--- a/lib/smpp/pdu/bind_transmitter_response.rb
+++ b/lib/smpp/pdu/bind_transmitter_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::BindTransmitterResponse < Smpp::Pdu::BindRespBase
   @command_id = BIND_TRANSMITTER_RESP
   handles_cmd BIND_TRANSMITTER_RESP
diff --git a/lib/smpp/pdu/deliver_sm.rb b/lib/smpp/pdu/deliver_sm.rb
index 356a31f..cf65393 100644
--- a/lib/smpp/pdu/deliver_sm.rb
+++ b/lib/smpp/pdu/deliver_sm.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 
 # Received for MO message or delivery notification
 class Smpp::Pdu::DeliverSm < Smpp::Pdu::Base 
diff --git a/lib/smpp/pdu/deliver_sm_response.rb b/lib/smpp/pdu/deliver_sm_response.rb
index caa4077..17ecaf7 100644
--- a/lib/smpp/pdu/deliver_sm_response.rb
+++ b/lib/smpp/pdu/deliver_sm_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::DeliverSmResponse < Smpp::Pdu::Base
   handles_cmd DELIVER_SM_RESP
 
diff --git a/lib/smpp/pdu/enquire_link.rb b/lib/smpp/pdu/enquire_link.rb
index 78b874c..f86a4fb 100644
--- a/lib/smpp/pdu/enquire_link.rb
+++ b/lib/smpp/pdu/enquire_link.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::EnquireLink < Smpp::Pdu::Base
   handles_cmd ENQUIRE_LINK
 
diff --git a/lib/smpp/pdu/enquire_link_response.rb b/lib/smpp/pdu/enquire_link_response.rb
index 96e8a46..4e561de 100644
--- a/lib/smpp/pdu/enquire_link_response.rb
+++ b/lib/smpp/pdu/enquire_link_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::EnquireLinkResponse < Smpp::Pdu::Base
   handles_cmd ENQUIRE_LINK_RESP
 
diff --git a/lib/smpp/pdu/generic_nack.rb b/lib/smpp/pdu/generic_nack.rb
index dd0e278..76fc26e 100644
--- a/lib/smpp/pdu/generic_nack.rb
+++ b/lib/smpp/pdu/generic_nack.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # signals invalid message header
 class Smpp::Pdu::GenericNack < Smpp::Pdu::Base
   handles_cmd GENERIC_NACK
diff --git a/lib/smpp/pdu/submit_multi.rb b/lib/smpp/pdu/submit_multi.rb
index 960a378..933529a 100644
--- a/lib/smpp/pdu/submit_multi.rb
+++ b/lib/smpp/pdu/submit_multi.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # Sending an MT message to multiple addresses
 # Author: Abhishek Parolkar, (abhishek[at]parolkar.com)
 #TODO: Implement from_wire_data for this pdu class.
diff --git a/lib/smpp/pdu/submit_multi_response.rb b/lib/smpp/pdu/submit_multi_response.rb
index d543946..3316a91 100644
--- a/lib/smpp/pdu/submit_multi_response.rb
+++ b/lib/smpp/pdu/submit_multi_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # Recieving response for an MT message sent to multiple addresses
 # Author: Abhishek Parolkar, (abhishek[at]parolkar.com)
 class Smpp::Pdu::SubmitMultiResponse < Smpp::Pdu::Base
diff --git a/lib/smpp/pdu/submit_sm_response.rb b/lib/smpp/pdu/submit_sm_response.rb
index 966d25c..701a052 100644
--- a/lib/smpp/pdu/submit_sm_response.rb
+++ b/lib/smpp/pdu/submit_sm_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::SubmitSmResponse < Smpp::Pdu::Base
   handles_cmd SUBMIT_SM_RESP
 
diff --git a/lib/smpp/pdu/unbind.rb b/lib/smpp/pdu/unbind.rb
index 2d548c6..685d838 100644
--- a/lib/smpp/pdu/unbind.rb
+++ b/lib/smpp/pdu/unbind.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::Unbind < Smpp::Pdu::Base
   handles_cmd UNBIND
 
diff --git a/lib/smpp/pdu/unbind_response.rb b/lib/smpp/pdu/unbind_response.rb
index b0d4053..9be0732 100644
--- a/lib/smpp/pdu/unbind_response.rb
+++ b/lib/smpp/pdu/unbind_response.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 class Smpp::Pdu::UnbindResponse < Smpp::Pdu::Base
   handles_cmd UNBIND_RESP
 
diff --git a/lib/smpp/receiver.rb b/lib/smpp/receiver.rb
index 87d9e7c..26506eb 100644
--- a/lib/smpp/receiver.rb
+++ b/lib/smpp/receiver.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # The SMPP Receiver maintains a unidirectional connection to an SMSC.
 # Provide a config hash with connection options to get started. 
 # See the sample_gateway.rb for examples of config values.
diff --git a/lib/smpp/server.rb b/lib/smpp/server.rb
index 6ee8579..1350c55 100644
--- a/lib/smpp/server.rb
+++ b/lib/smpp/server.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # --------
 # This is experimental stuff submitted by taryn@taryneast.org
 # --------
diff --git a/lib/smpp/transceiver.rb b/lib/smpp/transceiver.rb
index 70516c6..ed771d1 100644
--- a/lib/smpp/transceiver.rb
+++ b/lib/smpp/transceiver.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # The SMPP Transceiver maintains a bidirectional connection to an SMSC.
 # Provide a config hash with connection options to get started. 
 # See the sample_gateway.rb for examples of config values.
diff --git a/lib/smpp/transmitter.rb b/lib/smpp/transmitter.rb
index 72e5104..0410655 100644
--- a/lib/smpp/transmitter.rb
+++ b/lib/smpp/transmitter.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # The SMPP Transmitter maintains a unidirectional connection to an SMSC.
 # Provide a config hash with connection options to get started.
 # See the sample_gateway.rb for examples of config values.
diff --git a/lib/smpp/version.rb b/lib/smpp/version.rb
index d84a70f..d9810b3 100644
--- a/lib/smpp/version.rb
+++ b/lib/smpp/version.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module Smpp
   VERSION = "0.6.0"
 end
diff --git a/lib/sms.rb b/lib/sms.rb
index ae3d48d..df853f4 100644
--- a/lib/sms.rb
+++ b/lib/sms.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # Basic SMS class for sample gateway
 
 class Sms
@@ -6,4 +7,4 @@ class Sms
   def initialize(body)
     self.body = body
   end
-end
\ No newline at end of file
+end
diff --git a/test/delegate.rb b/test/delegate.rb
index 060d9c9..42ccf41 100644
--- a/test/delegate.rb
+++ b/test/delegate.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # the delagate receives callbacks when interesting things happen on the connection
 class Delegate
 
diff --git a/test/encoding_test.rb b/test/encoding_test.rb
index 8f52247..9387aa6 100644
--- a/test/encoding_test.rb
+++ b/test/encoding_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'test/unit'
 require 'smpp/encoding/utf8_encoder'
diff --git a/test/optional_parameter_test.rb b/test/optional_parameter_test.rb
index 59b5932..f5bdd16 100644
--- a/test/optional_parameter_test.rb
+++ b/test/optional_parameter_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'test/unit'
 require 'smpp'
diff --git a/test/pdu_parsing_test.rb b/test/pdu_parsing_test.rb
index 82608ed..a7f8993 100644
--- a/test/pdu_parsing_test.rb
+++ b/test/pdu_parsing_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'test/unit'
 require File.expand_path(File.dirname(__FILE__) + "../../lib/smpp")
diff --git a/test/receiver_test.rb b/test/receiver_test.rb
index 4625c38..0b75300 100644
--- a/test/receiver_test.rb
+++ b/test/receiver_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'test/unit'
 require 'smpp'
diff --git a/test/responsive_delegate.rb b/test/responsive_delegate.rb
index 7a20225..b438ac3 100644
--- a/test/responsive_delegate.rb
+++ b/test/responsive_delegate.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 #TODO This should be made prettier with mocha
 class ResponsiveDelegate
   attr_reader :seq, :event_counter
diff --git a/test/server.rb b/test/server.rb
index e281f87..bfa4e98 100644
--- a/test/server.rb
+++ b/test/server.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 # a server which immediately requests the client to unbind
 module Server
   def self.config
diff --git a/test/smpp_test.rb b/test/smpp_test.rb
index 0d71ecf..368e8cd 100644
--- a/test/smpp_test.rb
+++ b/test/smpp_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'test/unit'
 require 'smpp'
diff --git a/test/submit_sm_test.rb b/test/submit_sm_test.rb
index 7611457..f0e32f6 100644
--- a/test/submit_sm_test.rb
+++ b/test/submit_sm_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'test/unit'
 require 'smpp'
diff --git a/test/transceiver_test.rb b/test/transceiver_test.rb
index 3f825cb..104bdbf 100644
--- a/test/transceiver_test.rb
+++ b/test/transceiver_test.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require "rubygems"
 require "test/unit"
 require File.expand_path(File.dirname(__FILE__) + "../../lib/smpp")