diff --git a/specs/.idea/.gitignore b/specs/.idea/.gitignore
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index 0000000..3413c68
--- /dev/null
+++ b/specs/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/../../../../../../../../../../../:\Users\Nicolas\OneDrive\Ecole\RES\Labo\Lab03\Teaching-HEIGVD-RES-2021-Exercise-Protocol-Design\specs\.idea/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/specs/.idea/misc.xml b/specs/.idea/misc.xml
new file mode 100644
index 0000000..ca489bb
--- /dev/null
+++ b/specs/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
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diff --git a/specs/.idea/modules.xml b/specs/.idea/modules.xml
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index 0000000..304bf2d
--- /dev/null
+++ b/specs/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/specs.iml" filepath="$PROJECT_DIR$/.idea/specs.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/specs/.idea/specs.iml b/specs/.idea/specs.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/specs/.idea/specs.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/specs/.idea/vcs.xml b/specs/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/specs/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/specs/Meridas/PROTOCOL.md b/specs/Meridas/PROTOCOL.md
new file mode 100644
index 0000000..bcc4f99
--- /dev/null
+++ b/specs/Meridas/PROTOCOL.md
@@ -0,0 +1,16 @@
+What transport protocol do we use?TCP   
+How does the client find the server (addresses and ports)?
+Server has a static adress/port combination  
+Who speaks first?Client  
+What is the sequence of messages exchanged by the client and the server? (flow)
+Client : request connexion
+Server : allow connexion, available operations  
+Client : request operation operand1 operand2  
+Server : Result (Value, noErr)  
+Client : Close connexion  
+What happens when a message is received from the other party? (semantics)  
+Message parsed and interpreted    
+What is the syntax of the messages? How we generate and parse them? (syntax)  
+Operations are separated by a blank space  
+Who closes the connection and when?  
+Client when he wants to quit.
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