diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bafe145
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.exe
+
diff --git a/libnetwork.lua b/libnetwork.lua
new file mode 100644
index 0000000..a9c25b2
--- /dev/null
+++ b/libnetwork.lua
@@ -0,0 +1,59 @@
+function socket() -- Allocate a new socket
+
+end
+
+function connect(sfd,remote_tag,port) -- Connect to a remote device
+
+end
+
+function bind(sfd,port) -- Bind socket at specific port
+
+end
+
+function listen(sfd,sz) -- Set size of queue for waiting connections
+
+end
+
+function accept(sfd) -- Accept Connection
+
+end
+
+function send(sfd,...) -- Standard Network I/O
+
+end
+
+function recv(sfd) -- Standard Network I/O
+
+end
+
+function shutdown(sfd) -- Close Socket
+
+end
+
+function close(sfd) -- Close Socket
+
+end
+
+function do_dhcp_client() -- Connect to DHCP Server and try to get a tag.
+
+end
+
+function do_arp_broadcast() -- ARP: Broadcast tag and uuid information of this device
+
+end
+
+function arp_listener() -- ARP: Listen to arp broadcast and record informations. Notice that this listener also replies to specific arp-request
+
+end
+
+function do_arp_query() -- ARP: Query uuid with tag, will send arp-request
+
+end
+
+function run_arp() -- Start ARP Services in background
+
+end
+
+function run_dhcp_client() -- Start DHCP Client in background
+
+end
\ No newline at end of file
diff --git a/vector.lua b/vector.lua
index 278a876..d36cedc 100644
--- a/vector.lua
+++ b/vector.lua
@@ -1,93 +1,109 @@
 require("class")
 
-Vector=class("Vector")
+Vector = class("Vector")
 
 function Vector:_reset()
-self.sz=0
-self.bus={}
+    self.sz = 0
+    self.bus = {}
 end
 
 function Vector:ctor(t)
-self:_reset()
-if((t ~= nil) and (type(t) == "table")) then
-for k,v in pairs(t) do
-local x={}
-x.first=k
-x.second=v
-self:push_back(x)
-end --for
-end --if
+    self:_reset()
+    if ((t ~= nil) and (type(t) == "table")) then
+        for k, v in pairs(t) do
+            local x = {}
+            x.first = k
+            x.second = v
+            self:push_back(x)
+        end --for
+    end --if
 end --func
 
 function Vector:empty()
-return self.sz==0
+    return self.sz == 0
 end
 
 function Vector:push_back(val)
-self.bus[self.sz]=val
-self.sz=self.sz+1
+    self.bus[self.sz] = val
+    self.sz = self.sz + 1
 end
 
 function Vector:pop_back()
-if(self:empty()) then return nil
-else
-local val=self.bus[self.sz-1]
-self.bus[self.sz-1]=nil
-self.sz=self.sz-1
-return val
-end
+    if (self:empty()) then
+        return nil
+    else
+        local val = self.bus[self.sz - 1]
+        self.bus[self.sz - 1] = nil
+        self.sz = self.sz - 1
+        return val
+    end
 end
 
 function Vector:front()
-if(self:empty()) then return nil
-else return self.bus[0]
-end
+    if (self:empty()) then
+        return nil
+    else
+        return self.bus[0]
+    end
 end
 
 function Vector:back()
-if(self:empty()) then return nil
-else return self.bus[self.sz-1]
-end
+    if (self:empty()) then
+        return nil
+    else
+        return self.bus[self.sz - 1]
+    end
 end
 
 function Vector:clear()
-self:_reset()
+    self:_reset()
 end
 
 function Vector:at(index)
-if(type(index) ~= "number") then return nil
-elseif(self:empty()) then return nil
-elseif(index<0) then return nil
-elseif(index>=self.sz) then return nil
-else return self.bus[index]
-end
+    if (type(index) ~= "number") then
+        return nil
+    elseif (self:empty()) then
+        return nil
+    elseif (index < 0) then
+        return nil
+    elseif (index >= self.sz) then
+        return nil
+    else
+        return self.bus[index]
+    end
 end
 
 function Vector:size()
-return self.sz
+    return self.sz
 end
 
-function Vector:insert_after(index,val)
-if(type(index) ~= "number") then return nil
-elseif(index>=self.sz) then return nil
-elseif(index<-1) then return nil
-else
-for i=self.sz-1,index+1,-1 do
-self.bus[i+1]=self.bus[i]
-end
-self.bus[index+1]=val
-self.sz=self.sz+1
-end
+function Vector:insert_after(index, val)
+    if (type(index) ~= "number") then
+        return nil
+    elseif (index >= self.sz) then
+        return nil
+    elseif (index < -1) then
+        return nil
+    else
+        for i = self.sz - 1, index + 1, -1 do
+            self.bus[i + 1] = self.bus[i]
+        end
+        self.bus[index + 1] = val
+        self.sz = self.sz + 1
+    end
 end
 
 function Vector:erase(index)
-if(type(index) ~= "number") then return nil
-elseif(index>=self.sz) then return nil
-elseif(index<0) then return nil
-else
-for i=index+1,self.sz-1,1 do
-self.bus[i-1]=self.bus[i]
-end
-self.sz=self.sz-1
-end
+    if (type(index) ~= "number") then
+        return nil
+    elseif (index >= self.sz) then
+        return nil
+    elseif (index < 0) then
+        return nil
+    else
+        for i = index + 1, self.sz - 1, 1 do
+            self.bus[i - 1] = self.bus[i]
+        end
+        self.sz = self.sz - 1
+    end
 end