binarysec / node-tuntap Goto Github PK

i use:
tt.write(packet);
to send ip packet and than use tcp dump to capture the packet:
tcpdump -i tun8
it seems tcp dump can't recognize the packet.
here is my tun device setup:
tt = tuntap({
type: 'tun',
name: 'tun8',
mtu: 1500,
addr: '192.168.100.1',
dest: '192.168.100.2',
mask: '255.255.255.0',
ethtype_comp: 'none',
persist: true,
up: true,
running: true,
});

than i look into the code, and modify the code in
src/tuntap-itf/tuntap-itf-linux.inc.cc
while open the tun device, and add the flag as follows:

109 if(opts.mode == tuntap_itf_opts_t::MODE_TUN)
110 ifr.ifr_flags |= IFF_TUN;
111 else if(opts.mode == tuntap_itf_opts_t::MODE_TAP)
112 ifr.ifr_flags |= IFF_TAP;
113
114 //add by chengen
115 ifr.ifr_flags |= IFF_NO_PI;
116
117 MK_IOCTL(*fd, TUNSETIFF, &ifr)

line 115. and then it works. tcpdump can recognize the packet. is this a bug or i missed something on configuration?

Hi,

do you think to extends this project to node v4?

The build process fail on node v4 but is working on v0.12.

Bests
Walter

Would be nice to have Mac OSX support. Currently fails right off the bat with a #include <linux/if.h>.

Hi,

trying to use this module, but apparently I suck at nodejs and I can't create working tun tunnel.
Could you please add some more code snippets with the example usage?

Thx.

When a ipv4 packet is sent (I reply successfully to ARP), node has a crash:

*** Error in `node': double free or corruption (!prev): 0x000055a74504ab30 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7908b)[0x7f436149208b]
/lib/x86_64-linux-gnu/libc.so.6(+0x826fa)[0x7f436149b6fa]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7f436149f12c]
node(_ZN2v88internal18ArrayBufferTracker18FreeDeadInNewSpaceEPNS0_4HeapE+0x13c)[0x55a74266d50c]
node(_ZN2v88internal4Heap8ScavengeEv+0x189b)[0x55a74268e43b]
node(_ZN2v88internal4Heap24PerformGarbageCollectionENS0_16GarbageCollectorENS_15GCCallbackFlagsE+0x119)[0x55a74268ecf9]
node(_ZN2v88internal4Heap14CollectGarbageENS0_16GarbageCollectorENS0_23GarbageCollectionReasonEPKcNS_15GCCallbackFlagsE+0x153)[0x55a74268f7c3]
node(_ZN2v88internal7Factory15NewFillerObjectEibNS0_15AllocationSpaceE+0x7f)[0x55a74263a9cf]
node(_ZN2v88internal26Runtime_AllocateInNewSpaceEiPPNS0_6ObjectEPNS0_7IsolateE+0x78)[0x55a742941bc8]
[0x37977ff843a7]

Hi,

What is necessary to support ipv6?