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timestamp property on 'packet' listener #88

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timestamp property on 'packet' listener #88

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d654041
pass timestamps on packet listener
Apr 16, 2019
0fd4c5f
README samples update
Apr 16, 2019
5b0d61e
refactoring
Apr 16, 2019
44eb928
Commented out cb_packets assert(status == 0). Output actual status wh…
Jul 5, 2019
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4 changes: 3 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -44,9 +44,11 @@ var linkType = c.open(device, filter, bufSize, buffer);

c.setMinBytes && c.setMinBytes(0);

c.on('packet', function(nbytes, trunc) {
c.on('packet', function(nbytes, trunc, ts) {
console.log('packet: length ' + nbytes + ' bytes, truncated? '
+ (trunc ? 'yes' : 'no'));
const timestamp = Number(`${ts.seconds}${Math.floor(ts.microseconds/1000)}`);
console.log(`timestamp: ${new Date(timestamp).toISOString()}`);

// raw packet data === buffer.slice(0, nbytes)

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16 changes: 12 additions & 4 deletions src/binding.cc
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Expand Up @@ -134,15 +134,23 @@ class Pcap : public Nan::ObjectWrap {
}
memcpy(obj->buffer_data, pkt_data, copy_len);

Local<Value> emit_argv[3] = {
Local<Object> Timestamp;
Timestamp = Nan::New<Object>();
Timestamp->Set(Nan::New<String>("seconds").ToLocalChecked(),
Nan::New<Number>(pkt_hdr->ts.tv_sec));
Timestamp->Set(Nan::New<String>("microseconds").ToLocalChecked(),
Nan::New<Number>(pkt_hdr->ts.tv_usec));

Local<Value> emit_argv[4] = {
Nan::New<String>(packet_symbol),
Nan::New<Number>(copy_len),
Nan::New<Boolean>(truncated)
Nan::New<Boolean>(truncated),
Timestamp
};
Nan::MakeCallback(
Nan::New<Object>(obj->persistent()),
Nan::New<Function>(obj->Emit),
3,
4,
emit_argv
);
}
Expand Down Expand Up @@ -183,7 +191,7 @@ class Pcap : public Nan::ObjectWrap {
}
#else
static void cb_packets(uv_poll_t* handle, int status, int events) {
assert(status == 0);
// assert(status == 0);
Pcap *obj = (Pcap*)handle->data;
int packet_count;

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