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add short packet optimization

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wangyu-
2017-10-16 12:07:18 -05:00
parent dc86523464
commit 45a8cef2f5
2 changed files with 27 additions and 4 deletions
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23
fec_manager.cpp
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@@ -13,6 +13,10 @@
const int encode_fast_send=1;
const int decode_fast_send=1;
int short_packet_optimize=1;
int header_overhead=40;
blob_encode_t::blob_encode_t()
{
clear();
@@ -247,9 +251,28 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
if(type==0)
{
actual_data_num=fec_data_num;
actual_redundant_num=fec_redundant_num;
if(short_packet_optimize)
{
u32_t best_len=(blob_encode.get_shard_len(fec_data_num,0)+header_overhead)*(fec_data_num+fec_redundant_num);
int best_data_num=fec_data_num;
for(int i=1;i<actual_data_num;i++)
{
u32_t new_len=(blob_encode.get_shard_len(i,0)+header_overhead)*(i+fec_redundant_num);
if(new_len<best_len)
{
best_len=new_len;
best_data_num=i;
}
}
actual_data_num=best_data_num;
actual_redundant_num=fec_redundant_num;
mylog(log_info,"actual_data_num=%d actual_redundant_num=%d\n",best_data_num,fec_redundant_num);
}
assert(blob_encode.output(actual_data_num,blob_output,fec_len)==0);
}
else

8
main.cpp
View File

@@ -32,11 +32,11 @@ int disable_fec=0;
int debug_force_flush_fec=0;
int fec_data_num=20;
int fec_redundant_num=8;
int fec_data_num=160;
int fec_redundant_num=80;
int fec_mtu=1250;
int fec_pending_num=30;
int fec_pending_time=10000;
int fec_pending_num=50;
int fec_pending_time=10000; //10ms
int fec_type=0;
u32_t local_ip_uint32,remote_ip_uint32=0;