shi-yan

void setTcpKeepalive(SOCKET &sockfd)
{
    const uint32_t keepaliveIntervalSec = 10;

#ifdef _WIN32
    tcp_keepalive keepaliveParams;
    DWORD ret = 0;
    keepaliveParams.onoff = 1;
    keepaliveParams.keepaliveinterval = keepaliveParams.keepalivetime = keepaliveIntervalSec * 1000;
    WSAIoctl(sockfd, SIO_KEEPALIVE_VALS, &keepaliveParams, sizeof(keepaliveParams), NULL, 0, &ret, NULL, NULL);

shi-yan

#both protopath and protos need to use the relative path.
#otherwise you will see this protobuf compiler message:
#You must specify a --proto_path which encompasses this file.  Note that the proto_path must be an exact prefix
#of the .proto file names -- protoc is too dumb to figure out when two paths
# (e.g. absolute and relative) are equivalent (it's harder than you think).
PROTOPATH += ../../../../common/protocols/protos #this is the folder contains *.proto
PROTOPATHS =
for(p, PROTOPATH):PROTOPATHS += --proto_path=$${p}

PROTOS += ../../../../common/protocols/protos/xxx.proto #the actual *.proto files need to be compiled.

shi-yan

The webrtc build instruction is very shitty in my opinion. It has way too much confusing information that is unrelated to webrtc.

here are the steps I went through to build it on ubuntu:

1. install tools:
  git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
  $ export PATH=`pwd`/depot_tools:"$PATH"

2. sync code:
  gclient config --name src http://webrtc.googlecode.com/svn/trunk

shi-yan

I'm so used to Mac key mapping that I want to use the windows key as the ctrl, and the ctrl as the windows key.

I found a very useful link here:
http://stackoverflow.com/questions/21845209/remap-ctrl-alt-super-keys-in-ubuntu-13-10

first run this to generate the keymap
  xmodmap -pke > ~/.Xmodmap.

open .Xmodmap file, add these at the beginning:
  clear control

shi-yan

Force loading debug symbols (for example, mismatched simbols) with windbg:

.symopt+0x40

This command enables SYMOPT_LOAD_ANYTHING option.

Details are here: http://seclib.blogspot.com/2005/07/force-windbg-to-load-symbols.html

shi-yan

chromium/src$ export GYP_DEFINES="proprietary_codecs=1 ffmpeg_branding=Chrome"
chromium/src$ build/gyp_chromium

shi-yan

X: 1
T: Crunchy Crunchy Apple Chips
M: 4/4
L: 1/8
Q:1/4=180
K:D % 2 sharps
C:Stewie Yan
O:San Jose CA
N:Generated with AI
df df Af e2| \

shi-yan

Building Caffe on Ubuntu 16 with Cuda 8.0 wasn't smooth for me.

I googled, many people saw the same problem. I want to briefly document what I did to build Caffe.

symptoms, you might see errors like this, this is because of gcc 5.

a new feature added to gcc5 called abi_tag will cause problems like this:

https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Attributes.html

shi-yan

check symbol:
http://stackoverflow.com/questions/34732/how-do-i-list-the-symbols-in-a-so-file
nm -g yourLib.so
nm -gC yourLib.so

debug dlopen
http://stackoverflow.com/questions/34415168/dlopen-returns-with-file-not-found-although-file-exist
export LD_DEBUG=all

let gdb break into a program with ctrl-c

shi-yan

downstream github

git remote add <upstream>/<repo> ssh://git@bitbucket.org/<upstream>/<repo>.git
git fetch <upstream>/<repo>
git checkout master
git merge remotes/<upstream>/<repo>/master


sync submodules
git submodule update --init --recursive