Beginnings of bitswap

yamux
jmjatlanta 2017-07-20 07:57:20 -05:00
parent cb05b249ba
commit 250b88601a
3 changed files with 84 additions and 0 deletions

8
bitswap/network.c Normal file
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/***
* 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"

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/***
* 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);
};

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/**
* 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;
};