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42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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#include <ccan/tal/str/str.h>
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#include <fcntl.h>
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#include <lightningd/crypto_sync.h>
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#include <lightningd/peer_failed.h>
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#include <status.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <wire/gen_peer_wire.h>
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/* We only support one channel per peer anyway */
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void peer_failed(int peer_fd, struct crypto_state *cs,
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const struct channel_id *channel_id,
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u16 error_code, const char *fmt, ...)
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{
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va_list ap;
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const char *errmsg;
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struct channel_id all_channels;
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u8 *msg;
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/* BOLT #1:
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*
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* A node sending `error` MUST fail the channel referred to by the
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* `channel-id`, or if `channel-id` is `0xFFFFFFFFFFFFFFFF` it MUST
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* fail all channels and MUST close the connection.
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*/
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if (!channel_id) {
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memset(&all_channels, 0xFF, sizeof(all_channels));
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channel_id = &all_channels;
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}
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va_start(ap, fmt);
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errmsg = tal_vfmt(NULL, fmt, ap);
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va_end(ap);
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msg = towire_error(errmsg, channel_id, (const u8 *)errmsg);
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/* This is only best-effort; don't block. */
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fcntl(peer_fd, F_SETFL, fcntl(peer_fd, F_GETFL) | O_NONBLOCK);
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sync_crypto_write(cs, peer_fd, msg);
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status_failed(error_code, "%s", errmsg);
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}
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