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protocol: add decline response for HTLC.

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We don't have to accept an HTLC they offer; we might not be able to
route it, or it might offer insufficient payment.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2015-09-24 15:02:46 +09:30
parent 5bc22f0368
commit 807ac38308
3 changed files with 329 additions and 14 deletions
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95
lightning.pb-c.h
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@@ -19,12 +19,14 @@ typedef struct _Sha256Hash Sha256Hash;
typedef struct _Signature Signature;
typedef struct _Locktime Locktime;
typedef struct _BitcoinPubkey BitcoinPubkey;
typedef struct _Funding Funding;
typedef struct _OpenChannel OpenChannel;
typedef struct _OpenAnchor OpenAnchor;
typedef struct _OpenCommitSig OpenCommitSig;
typedef struct _OpenComplete OpenComplete;
typedef struct _Update Update;
typedef struct _UpdateAddHtlc UpdateAddHtlc;
typedef struct _UpdateDeclineHtlc UpdateDeclineHtlc;
typedef struct _UpdateCompleteHtlc UpdateCompleteHtlc;
typedef struct _UpdateRemoveHtlc UpdateRemoveHtlc;
typedef struct _UpdateRemoveHtlcDelay UpdateRemoveHtlcDelay;
@@ -122,6 +124,28 @@ struct _BitcoinPubkey
, {0,NULL} }
/*
* How much a node charges (or pays!) for sending.
*/
struct _Funding
{
ProtobufCMessage base;
/*
* Base amount (in satoshi).
*/
protobuf_c_boolean has_fixed;
int64_t fixed;
/*
* This is charge per millionth of a satoshi.
*/
protobuf_c_boolean has_per_micro_satoshi;
int32_t per_micro_satoshi;
};
#define FUNDING__INIT \
{ PROTOBUF_C_MESSAGE_INIT (&funding__descriptor) \
, 0,0ll, 0,0 }
/*
* Set channel params.
*/
@@ -271,6 +295,29 @@ struct _UpdateAddHtlc
, NULL, 0, NULL, NULL }
typedef enum {
UPDATE_DECLINE_HTLC__REASON__NOT_SET = 0,
UPDATE_DECLINE_HTLC__REASON_INSUFFICIENT_FUNDS = 1,
UPDATE_DECLINE_HTLC__REASON_CANNOT_ROUTE = 2,
} UpdateDeclineHtlc__ReasonCase;
/*
* We can't do this HTLC, sorry.
*/
struct _UpdateDeclineHtlc
{
ProtobufCMessage base;
UpdateDeclineHtlc__ReasonCase reason_case;
union {
Funding *insufficient_funds;
protobuf_c_boolean cannot_route;
};
};
#define UPDATE_DECLINE_HTLC__INIT \
{ PROTOBUF_C_MESSAGE_INIT (&update_decline_htlc__descriptor) \
, UPDATE_DECLINE_HTLC__REASON__NOT_SET, {} }
/*
* Complete an HTLC
*/
@@ -449,6 +496,7 @@ typedef enum {
PKT__PKT_UPDATE_COMPLETE_HTLC = 6,
PKT__PKT_UPDATE_REMOVE_HTLC = 7,
PKT__PKT_UPDATE_REMOVE_HTLC_DELAY = 8,
PKT__PKT_UPDATE_DECLINE_HTLC = 9,
PKT__PKT_CLOSE = 401,
PKT__PKT_CLOSE_COMPLETE = 402,
PKT__PKT_ERROR = 1000,
@@ -480,6 +528,7 @@ struct _Pkt
UpdateCompleteHtlc *update_complete_htlc;
UpdateRemoveHtlc *update_remove_htlc;
UpdateRemoveHtlcDelay *update_remove_htlc_delay;
UpdateDeclineHtlc *update_decline_htlc;
/*
* Closing
*/
@@ -572,6 +621,25 @@ BitcoinPubkey *
void bitcoin_pubkey__free_unpacked
(BitcoinPubkey *message,
ProtobufCAllocator *allocator);
/* Funding methods */
void funding__init
(Funding *message);
size_t funding__get_packed_size
(const Funding *message);
size_t funding__pack
(const Funding *message,
uint8_t *out);
size_t funding__pack_to_buffer
(const Funding *message,
ProtobufCBuffer *buffer);
Funding *
funding__unpack
(ProtobufCAllocator *allocator,
size_t len,
const uint8_t *data);
void funding__free_unpacked
(Funding *message,
ProtobufCAllocator *allocator);
/* OpenChannel methods */
void open_channel__init
(OpenChannel *message);
@@ -686,6 +754,25 @@ UpdateAddHtlc *
void update_add_htlc__free_unpacked
(UpdateAddHtlc *message,
ProtobufCAllocator *allocator);
/* UpdateDeclineHtlc methods */
void update_decline_htlc__init
(UpdateDeclineHtlc *message);
size_t update_decline_htlc__get_packed_size
(const UpdateDeclineHtlc *message);
size_t update_decline_htlc__pack
(const UpdateDeclineHtlc *message,
uint8_t *out);
size_t update_decline_htlc__pack_to_buffer
(const UpdateDeclineHtlc *message,
ProtobufCBuffer *buffer);
UpdateDeclineHtlc *
update_decline_htlc__unpack
(ProtobufCAllocator *allocator,
size_t len,
const uint8_t *data);
void update_decline_htlc__free_unpacked
(UpdateDeclineHtlc *message,
ProtobufCAllocator *allocator);
/* UpdateCompleteHtlc methods */
void update_complete_htlc__init
(UpdateCompleteHtlc *message);
@@ -890,6 +977,9 @@ typedef void (*Locktime_Closure)
typedef void (*BitcoinPubkey_Closure)
(const BitcoinPubkey *message,
void *closure_data);
typedef void (*Funding_Closure)
(const Funding *message,
void *closure_data);
typedef void (*OpenChannel_Closure)
(const OpenChannel *message,
void *closure_data);
@@ -908,6 +998,9 @@ typedef void (*Update_Closure)
typedef void (*UpdateAddHtlc_Closure)
(const UpdateAddHtlc *message,
void *closure_data);
typedef void (*UpdateDeclineHtlc_Closure)
(const UpdateDeclineHtlc *message,
void *closure_data);
typedef void (*UpdateCompleteHtlc_Closure)
(const UpdateCompleteHtlc *message,
void *closure_data);
@@ -948,6 +1041,7 @@ extern const ProtobufCMessageDescriptor sha256_hash__descriptor;
extern const ProtobufCMessageDescriptor signature__descriptor;
extern const ProtobufCMessageDescriptor locktime__descriptor;
extern const ProtobufCMessageDescriptor bitcoin_pubkey__descriptor;
extern const ProtobufCMessageDescriptor funding__descriptor;
extern const ProtobufCMessageDescriptor open_channel__descriptor;
extern const ProtobufCEnumDescriptor open_channel__anchor_offer__descriptor;
extern const ProtobufCMessageDescriptor open_anchor__descriptor;
@@ -955,6 +1049,7 @@ extern const ProtobufCMessageDescriptor open_commit_sig__descriptor;
extern const ProtobufCMessageDescriptor open_complete__descriptor;
extern const ProtobufCMessageDescriptor update__descriptor;
extern const ProtobufCMessageDescriptor update_add_htlc__descriptor;
extern const ProtobufCMessageDescriptor update_decline_htlc__descriptor;
extern const ProtobufCMessageDescriptor update_complete_htlc__descriptor;
extern const ProtobufCMessageDescriptor update_remove_htlc__descriptor;
extern const ProtobufCMessageDescriptor update_remove_htlc_delay__descriptor;