From 388c0f38f7d2096efd1049b59851b00c448f940f Mon Sep 17 00:00:00 2001
From: irungentoo <irungentoo@gmail.com>
Date: Mon, 24 Jun 2013 08:59:42 -0400
Subject: [PATCH] More Functions.

---
 core/DHT.c | 67 +++++++++++++++++++++++++++++++++++++++++++-----------
 core/DHT.h |  3 ++-
 2 files changed, 56 insertions(+), 14 deletions(-)

diff --git a/core/DHT.c b/core/DHT.c
index 7c40e9fe..4b1c6f13 100644
--- a/core/DHT.c
+++ b/core/DHT.c
@@ -9,8 +9,42 @@ int sendpacket(IP_Port ip_port, char * data, uint32_t length)
     return sendto(sock, data, length, 0, (struct sockaddr *)&addr, sizeof(addr));
 }
 
+//Attempt to add client with ip_port and client_id to the friends client list and close_clientlist
+int addto_lists(IP_Port ip_port, char * client_id)
+{
+    
+    
+    
+}
 
 
+//send a ping request
+//Currently incomplete: missing the ping_id part
+int pingreq(IP_Port ip_port)
+{
+    char data[37];
+    data[0] = 0;
+    
+    memcpy(data + 5, self_client_id, 32);
+    
+    sendpacket(ip_port, data, sizeof(data));
+    
+}
+
+//send a ping response
+//Currently incomplete: missing the ping_id part
+int pingres(IP_Port ip_port, uint32_t ping_id)
+{
+    char data[37];
+    data[0] = 1;
+    
+    memcpy(data + 1, &ping_id, 4);
+    memcpy(data + 5, self_client_id, 32);
+    
+    sendpacket(ip_port, data, sizeof(data));
+    
+}
+
 //send a getnodes request
 //Currently incomplete: missing the ping_id part
 int getnodes(IP_Port ip_port, char * client_id)
@@ -24,26 +58,32 @@ int getnodes(IP_Port ip_port, char * client_id)
    sendpacket(ip_port, data, sizeof(data));
 }
 
-//send a ping request
+//send a getnodes request
 //Currently incomplete: missing the ping_id part
-int ping(IP_Port ip_port)
+int sendnodes(IP_Port ip_port, char * client_id)
 {
-    char data[37];
-    data[0] = 0;
-    
-    memcpy(data + 5, self_client_id, 32);
-    
-    sendpacket(ip_port, data, sizeof(data));
-    
+   char data[325];
+   data[0] = 3;
+   
+   memcpy(data + 5, self_client_id, 32);
+   memcpy(data + 37, client_id, 32);
+   
+   sendpacket(ip_port, data, sizeof(data));
 }
 
 
+
+
 //Packet handling functions
 //One to handle each types of packets
 
 int handle_pingreq(char * packet, uint32_t length, IP_Port source)
 {
+    uint32_t ping_id;
     
+    memcpy(&ping_id, packet + 1, 4);
+    
+    pingres(source, ping_id);
     
 }
 
@@ -108,18 +148,20 @@ void DHT_recvpacket(char * packet, uint32_t length, IP_Port source)
     switch (packet[0]) {
     case 0:
         handle_pingreq(packet, length, source);
+        //TODO: try to add requesting node to client_list if packet is valid
         break;        
     case 1:
         handle_pingres(packet, length, source);
         break;        
     case 2:
         handle_getnodes(packet, length, source);
+        //TODO: try to add requesting node to client_list if packet is valid
         break;        
     case 3:
         handle_sendnodes(packet, length, source);
         break;
     default: 
-        break;
+        return;
         
     }
     
@@ -141,9 +183,8 @@ void doDHT()
 
 void bootstrap(IP_Port ip_port)
 {
-    
-    
-    
+
+    getnodes(ip_port, self_client_id);
     
 }
 
diff --git a/core/DHT.h b/core/DHT.h
index 2e6dde6f..d89d0f76 100644
--- a/core/DHT.h
+++ b/core/DHT.h
@@ -116,9 +116,10 @@ char self_client_id[32];
 //We only use one so it's much easier to have it as a global variable
 int sock;
 
+//A list of the clients mathematically closest to ours.
 #define LCLIENT_LIST 32
+Client_data close_clientlist[LCLIENT_LIST];
 
-Client_data client_list[LCLIENT_LIST];
 
 //Let's start with a static array for testing.
 Friend friends_list[256];