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-rw-r--r--sideband.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/sideband.c b/sideband.c
index 861f6219db..1b14ff8892 100644
--- a/sideband.c
+++ b/sideband.c
@@ -46,3 +46,29 @@ int recv_sideband(const char *me, int in_stream, int out, int err, char *buf, in
}
return 0;
}
+
+/*
+ * fd is connected to the remote side; send the sideband data
+ * over multiplexed packet stream.
+ */
+ssize_t send_sideband(int fd, int band, const char *data, ssize_t sz, int packet_max)
+{
+ ssize_t ssz = sz;
+ const char *p = data;
+
+ while (sz) {
+ unsigned n;
+ char hdr[5];
+
+ n = sz;
+ if (packet_max - 5 < n)
+ n = packet_max - 5;
+ sprintf(hdr, "%04x", n + 5);
+ hdr[4] = band;
+ safe_write(fd, hdr, 5);
+ safe_write(fd, p, n);
+ p += n;
+ sz -= n;
+ }
+ return ssz;
+}