From 250b88601a0c307a357ae830b2939d8a1411d85a Mon Sep 17 00:00:00 2001
From: jmjatlanta <jmjatlanta@gmail.com>
Date: Thu, 20 Jul 2017 07:57:20 -0500
Subject: [PATCH] Beginnings of bitswap

---
 bitswap/network.c               |  8 +++++
 include/ipfs/bitswap/network.h  | 59 +++++++++++++++++++++++++++++++++
 include/ipfs/bitswap/wantlist.h | 17 ++++++++++
 3 files changed, 84 insertions(+)
 create mode 100644 bitswap/network.c
 create mode 100644 include/ipfs/bitswap/network.h
 create mode 100644 include/ipfs/bitswap/wantlist.h

diff --git a/bitswap/network.c b/bitswap/network.c
new file mode 100644
index 0000000..f90a570
--- /dev/null
+++ b/bitswap/network.c
@@ -0,0 +1,8 @@
+/***
+ * This implements the BitswapNetwork. Members of this network can fill requests and
+ * smartly handle queues of local and remote requests.
+ */
+
+#include "ipfs/bitswap/network.h"
+
+
diff --git a/include/ipfs/bitswap/network.h b/include/ipfs/bitswap/network.h
new file mode 100644
index 0000000..5eac404
--- /dev/null
+++ b/include/ipfs/bitswap/network.h
@@ -0,0 +1,59 @@
+/***
+ * This implements the BitswapNetwork. Members of this network can fill requests and
+ * smartly handle queues of local and remote requests.
+ */
+
+struct BitswapRouting {
+	/**
+	 * Find the provider of a key asyncronously
+	 * @param context the session context
+	 * @param hash the key we're looking for
+	 * @param forWhat I have yet to research this
+	 * @param responseMethod a function pointer to call when results are found
+	 * @returns true(1) on success, otherwise false(0)
+	 */
+	int (*FindProviderAsync)(struct SessionContext* context, unsigned char* hash, int forWhat, void (*responseMethod)(void*));
+
+	/**
+	 * Provides the key to the network. Is this an announcement or a fill?
+	 * I think it is an announcement
+	 * @param context the session context
+	 * @param hash the hash to announce
+	 * @returns true(1) on success, false(0) on error
+	 */
+	int (*Provide)(struct SessionContext* context, unsigned char* hash);
+};
+
+struct BitswapNetwork {
+	/***
+	 * Send a message to a particular peer
+	 * @param context the context
+	 * @param peerId the peer ID of who to send to
+	 * @param message the message to send
+	 * @returns true(1) on success, false(0) otherwise
+	 */
+	int (*SendMessage)(struct SessionContext* context, unsigned char* peerId, struct BitswapMessage* message);
+
+	/**
+	 * The BitswapReceiver is who receives messages from the network
+	 * @param receiver the struct that contains function pointers for receiving messages
+	 * @returns true(1) on success, otherwise false(0)
+	 */
+	int (*SetDelegate)(struct BitswapReceiver* receiver);
+
+	/**
+	 * Attempt a connection to a particular peer
+	 * @param context the session context
+	 * @param peerId the id of the peer
+	 * @returns true(1) on success, otherwise false(0)
+	 */
+	int (*ConnectTo)(struct SessionContext* context, unsigned char* peerId);
+
+	/**
+	 * A pointer to the method that creates a new BitswapMessageSender
+	 * @param context the session context
+	 * @param peerId the peer id of whom we should send the message to.
+	 * @reutrns a pointer to the allocated struct that contains the initialized BitswapMessageSender or NULL if there was a problem
+	 */
+	struct BitswapMessageSender* (*NewMessageSender)(struct SessionContext* context, unsigned char* peerId);
+};
diff --git a/include/ipfs/bitswap/wantlist.h b/include/ipfs/bitswap/wantlist.h
new file mode 100644
index 0000000..5d1e4f8
--- /dev/null
+++ b/include/ipfs/bitswap/wantlist.h
@@ -0,0 +1,17 @@
+/**
+ * This is a list of requests from a peer.
+ * NOTE: This tracks who wants what. If 2 peers want the same file,
+ * there will be 1 WantListEntry in the WantList. There will be 2 entries in
+ * WantListEntry.sessionsRequesting.
+ */
+
+struct WantListEntry {
+	unsigned char* cid;
+	size_t cid_length;
+	int priority;
+	struct Libp2pVector* sessionsRequesting;
+};
+
+struct WantList {
+	struct Libp2pVector* set;
+};