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main.cpp
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main.cpp
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#include "common.h"
#include "log.h"
#include "git_version.h"
#include "lib/rs.h"
#include "packet.h"
#include "connection.h"
#include "fd_manager.h"
#include "delay_manager.h"
#include "fec_manager.h"
using namespace std;
typedef unsigned long long u64_t; //this works on most platform,avoid using the PRId64
typedef long long i64_t;
typedef unsigned int u32_t;
typedef int i32_t;
int dup_num=1;
int dup_delay_min=20; //0.1ms
int dup_delay_max=20;
int jitter_min=0;
int jitter_max=0;
//int random_number_fd=-1;
int mtu_warn=1350;
int disable_mtu_warn=0;
int fec_data_num=20;
int fec_redundant_num=16;
int fec_mtu=1300;
int fec_pending_num=200;
int fec_pending_time=50000;
int fec_type=0;
u32_t local_ip_uint32,remote_ip_uint32=0;
char local_ip[100], remote_ip[100];
int local_port = -1, remote_port = -1;
u64_t last_report_time=0;
int report_interval=0;
//conn_manager_t conn_manager;
delay_manager_t delay_manager;
fd_manager_t fd_manager;
const int disable_conv_clear=0;
int socket_buf_size=1024*1024;
int VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV;
int init_listen_socket()
{
local_listen_fd =socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
int yes = 1;
//setsockopt(udp_fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));
struct sockaddr_in local_me={0};
socklen_t slen = sizeof(sockaddr_in);
//memset(&local_me, 0, sizeof(local_me));
local_me.sin_family = AF_INET;
local_me.sin_port = htons(local_port);
local_me.sin_addr.s_addr = local_ip_uint32;
if (bind(local_listen_fd, (struct sockaddr*) &local_me, slen) == -1) {
mylog(log_fatal,"socket bind error\n");
//perror("socket bind error");
myexit(1);
}
setnonblocking(local_listen_fd);
set_buf_size(local_listen_fd,socket_buf_size);
mylog(log_debug,"local_listen_fd=%d\n,",local_listen_fd);
return 0;
}
int new_connected_socket(int &fd,u32_t ip,int port)
{
char ip_port[40];
sprintf(ip_port,"%s:%d",my_ntoa(ip),port);
struct sockaddr_in remote_addr_in = { 0 };
socklen_t slen = sizeof(sockaddr_in);
//memset(&remote_addr_in, 0, sizeof(remote_addr_in));
remote_addr_in.sin_family = AF_INET;
remote_addr_in.sin_port = htons(port);
remote_addr_in.sin_addr.s_addr = ip;
fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (fd < 0) {
mylog(log_warn, "[%s]create udp_fd error\n", ip_port);
return -1;
}
setnonblocking(fd);
set_buf_size(fd, socket_buf_size);
mylog(log_debug, "[%s]created new udp_fd %d\n", ip_port, fd);
int ret = connect(fd, (struct sockaddr *) &remote_addr_in, slen);
if (ret != 0) {
mylog(log_warn, "[%s]fd connect fail\n",ip_port);
close(fd);
return -1;
}
return 0;
}
int delay_send(my_time_t delay,const dest_t &dest,char *data,int len)
{
int rand=random()%100;
//mylog(log_info,"rand = %d\n",rand);
if (dest.cook&&random_drop != 0) {
if (get_true_random_number() % 10000 < (u32_t) random_drop) {
return 0;
}
}
return delay_manager.add(delay,dest,data,len);;
}
int from_normal_to_fec(conn_info_t & conn_info,char *data,int len,int & out_n,char **&out_arr,int *&out_len,int *&out_delay)
{
static int out_delay_buf[max_fec_packet_num+100]={0};
//static int out_len_buf[max_fec_packet_num+100]={0};
static int counter=0;
out_delay=out_delay_buf;
//out_len=out_len_buf;
if(0)
{
if(data==0) return 0;
out_n=1;
static char *data_static;
data_static=data;
static int len_static;
len_static=len;
out_arr=&data_static;
out_len=&len_static;
}
else
{
counter++;
conn_info.fec_encode_manager.input(data,len);
//if(counter%5==0)
//conn_info.fec_encode_manager.input(0,0);
//int n;
//char **s_arr;
//int s_len;
conn_info.fec_encode_manager.output(out_n,out_arr,out_len);
}
//for(int i=0;i<n;i++)
//{
//delay_send(0,dest,s_arr[i],s_len);
//}
//delay_send(0,dest,data,len);
//delay_send(1000*1000,dest,data,len);
return 0;
}
int from_fec_to_normal(conn_info_t & conn_info,char *data,int len,int & out_n,char **&out_arr,int *&out_len,int *&out_delay)
{
static int out_delay_buf[max_normal_packet_num+100]={0};
out_delay=out_delay_buf;
if(0)
{
if(data==0) return 0;
out_n=1;
static char *data_static;
data_static=data;
static int len_static;
len_static=len;
out_arr=&data_static;
out_len=&len_static;
//out_len_buf[0]=len;
}
else
{
conn_info.fec_decode_manager.input(data,len);
//int n;char ** s_arr;int* len_arr;
conn_info.fec_decode_manager.output(out_n,out_arr,out_len);
for(int i=0;i<out_n;i++)
{
//out_delay_buf[i]=100*i;
}
}
// printf("<n:%d>",n);
/*
for(int i=0;i<n;i++)
{
delay_send(0,dest,s_arr[i],len_arr[i]);
//s_arr[i][len_arr[i]]=0;
//printf("<%s>\n",s_arr[i]);
}*/
//my_send(dest,data,len);
return 0;
}
int client_event_loop()
{
//char buf[buf_len];
int i, j, k;int ret;
int yes = 1;
int epoll_fd;
int remote_fd;
fd64_t remote_fd64;
conn_info_t *conn_info_p=new conn_info_t;
conn_info_t &conn_info=*conn_info_p; //huge size of conn_info,do not allocate on stack
//conn_info.conv_manager.reserve();
conn_info.fec_encode_manager.re_init(fec_data_num,fec_redundant_num,fec_mtu,fec_pending_num,fec_pending_time,fec_type);
init_listen_socket();
epoll_fd = epoll_create1(0);
assert(epoll_fd>0);
const int max_events = 4096;
struct epoll_event ev, events[max_events];
if (epoll_fd < 0) {
mylog(log_fatal,"epoll return %d\n", epoll_fd);
myexit(-1);
}
ev.events = EPOLLIN;
ev.data.u64 = local_listen_fd;
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, local_listen_fd, &ev);
if (ret!=0) {
mylog(log_fatal,"add udp_listen_fd error\n");
myexit(-1);
}
assert(new_connected_socket(remote_fd,remote_ip_uint32,remote_port)==0);
remote_fd64=fd_manager.create(remote_fd);
mylog(log_debug,"remote_fd64=%llu\n",remote_fd64);
ev.events = EPOLLIN;
ev.data.u64 = remote_fd64;
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, remote_fd, &ev);
if (ret!= 0) {
mylog(log_fatal,"add raw_fd error\n");
myexit(-1);
}
ev.events = EPOLLIN;
ev.data.u64 = delay_manager.get_timer_fd();
mylog(log_debug,"delay_manager.get_timer_fd()=%d\n",delay_manager.get_timer_fd());
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, delay_manager.get_timer_fd(), &ev);
if (ret!= 0) {
mylog(log_fatal,"add delay_manager.get_timer_fd() error\n");
myexit(-1);
}
u64_t fd64=conn_info.fec_encode_manager.get_timer_fd64();
ev.events = EPOLLIN;
ev.data.u64 = fd64;
mylog(log_debug,"conn_info.fec_encode_manager.get_timer_fd64()=%llu\n",conn_info.fec_encode_manager.get_timer_fd64());
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd_manager.to_fd(fd64), &ev);
if (ret!= 0) {
mylog(log_fatal,"add fec_encode_manager.get_timer_fd64() error\n");
myexit(-1);
}
//my_timer_t timer;
conn_info.timer.add_fd_to_epoll(epoll_fd);
conn_info.timer.set_timer_repeat_us(timer_interval*1000);
mylog(log_debug,"conn_info.timer.get_timer_fd()=%d\n",conn_info.timer.get_timer_fd());
while(1)////////////////////////
{
if(about_to_exit) myexit(0);
int nfds = epoll_wait(epoll_fd, events, max_events, 180 * 1000);
if (nfds < 0) { //allow zero
if(errno==EINTR )
{
mylog(log_info,"epoll interrupted by signal\n");
myexit(0);
}
else
{
mylog(log_fatal,"epoll_wait return %d\n", nfds);
myexit(-1);
}
}
int idx;
for (idx = 0; idx < nfds; ++idx) {
if(events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd())
{
uint64_t value;
read(conn_info.timer.get_timer_fd(), &value, 8);
conn_info.conv_manager.clear_inactive();
mylog(log_trace,"events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd()\n");
}
else if (events[idx].data.u64 == (u64_t)local_listen_fd||events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64())
{
char data[buf_len];
int data_len;
ip_port_t ip_port;
u32_t conv;
int out_n;char **out_arr;int *out_len;int *out_delay;
dest_t dest;
dest.type=type_fd64;
dest.inner.fd64=remote_fd64;
dest.cook=1;
if(events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64())
{
mylog(log_trace,"events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64()\n");
//mylog(log_info,"timer!!!\n");
uint64_t value;
if(!fd_manager.exist(fd64)) //fd64 has been closed
{
mylog(log_trace,"!fd_manager.exist(fd64)");
continue;
}
if((ret=read(fd_manager.to_fd(fd64), &value, 8))!=8)
{
mylog(log_trace,"(ret=read(fd_manager.to_fd(fd64), &value, 8))!=8,ret=%d\n",ret);
continue;
}
if(value==0)
{
mylog(log_debug,"value==0\n");
continue;
}
assert(value==1);
from_normal_to_fec(conn_info,0,0,out_n,out_arr,out_len,out_delay);
//from_normal_to_fec(conn_info,0,0,out_n,out_arr,out_len,out_delay);
}
else//events[idx].data.u64 == (u64_t)local_listen_fd
{
mylog(log_trace,"events[idx].data.u64 == (u64_t)local_listen_fd\n");
struct sockaddr_in udp_new_addr_in={0};
socklen_t udp_new_addr_len = sizeof(sockaddr_in);
if ((data_len = recvfrom(local_listen_fd, data, max_data_len, 0,
(struct sockaddr *) &udp_new_addr_in, &udp_new_addr_len)) == -1) {
mylog(log_error,"recv_from error,this shouldnt happen at client\n");
myexit(1);
};
if(!disable_mtu_warn&&data_len>=mtu_warn)
{
mylog(log_warn,"huge packet,data len=%d (>=%d).strongly suggested to set a smaller mtu at upper level,to get rid of this warn\n ",data_len,mtu_warn);
}
mylog(log_trace,"Received packet from %s:%d,len: %d\n", inet_ntoa(udp_new_addr_in.sin_addr),
ntohs(udp_new_addr_in.sin_port),data_len);
ip_port.ip=udp_new_addr_in.sin_addr.s_addr;
ip_port.port=ntohs(udp_new_addr_in.sin_port);
u64_t u64=ip_port.to_u64();
if(!conn_info.conv_manager.is_u64_used(u64))
{
if(conn_info.conv_manager.get_size() >=max_conv_num)
{
mylog(log_warn,"ignored new udp connect bc max_conv_num exceed\n");
continue;
}
conv=conn_info.conv_manager.get_new_conv();
conn_info.conv_manager.insert_conv(conv,u64);
mylog(log_info,"new packet from %s:%d,conv_id=%x\n",inet_ntoa(udp_new_addr_in.sin_addr),ntohs(udp_new_addr_in.sin_port),conv);
}
else
{
conv=conn_info.conv_manager.find_conv_by_u64(u64);
mylog(log_trace,"conv=%d\n",conv);
}
conn_info.conv_manager.update_active_time(conv);
char * new_data;
int new_len;
put_conv(conv,data,data_len,new_data,new_len);
//dest.conv=conv;
from_normal_to_fec(conn_info,new_data,new_len,out_n,out_arr,out_len,out_delay);
}
mylog(log_trace,"out_n=%d\n",out_n);
for(int i=0;i<out_n;i++)
{
delay_send(out_delay[i],dest,out_arr[i],out_len[i]);
}
//my_send(dest,data,data_len);
}
else if (events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()) {
uint64_t value;
read(delay_manager.get_timer_fd(), &value, 8);
mylog(log_trace,"events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()\n");
//printf("<timerfd_triggered, %d>",delay_mp.size());
//fflush(stdout);
}
else if(events[idx].data.u64>u32_t(-1) )
{
char data[buf_len];
if(!fd_manager.exist(events[idx].data.u64)) //fd64 has been closed
{
mylog(log_trace,"!fd_manager.exist(events[idx].data.u64)");
continue;
}
assert(events[idx].data.u64==remote_fd64);
int fd=fd_manager.to_fd(remote_fd64);
int data_len =recv(fd,data,max_data_len,0);
mylog(log_trace, "received data from udp fd %d, len=%d\n", remote_fd,data_len);
if(data_len<0)
{
if(errno==ECONNREFUSED)
{
//conn_manager.clear_list.push_back(udp_fd);
mylog(log_debug, "recv failed %d ,udp_fd%d,errno:%s\n", data_len,remote_fd,strerror(errno));
}
mylog(log_warn, "recv failed %d ,udp_fd%d,errno:%s\n", data_len,remote_fd,strerror(errno));
continue;
}
if(!disable_mtu_warn&&data_len>mtu_warn)
{
mylog(log_warn,"huge packet,data len=%d (>%d).strongly suggested to set a smaller mtu at upper level,to get rid of this warn\n ",data_len,mtu_warn);
}
if(rm_crc32(data,data_len)!=0)
{
mylog(log_debug,"crc32 check error");
}
int out_n;char **out_arr;int *out_len;int *out_delay;
from_fec_to_normal(conn_info,data,data_len,out_n,out_arr,out_len,out_delay);
mylog(log_trace,"out_n=%d\n",out_n);
for(int i=0;i<out_n;i++)
{
u32_t conv;
char *new_data;
int new_len;
if(get_conv(conv,out_arr[i],out_len[i],new_data,new_len)!=0)
{
mylog(log_debug,"get_conv(conv,out_arr[i],out_len[i],new_data,new_len)!=0");
continue;
}
if(!conn_info.conv_manager.is_conv_used(conv))
{
mylog(log_trace,"!conn_info.conv_manager.is_conv_used(conv)");
}
conn_info.conv_manager.update_active_time(conv);
u64_t u64=conn_info.conv_manager.find_u64_by_conv(conv);
dest_t dest;
dest.inner.ip_port.from_u64(u64);
dest.type=type_ip_port;
//dest.conv=conv;
delay_send(out_delay[i],dest,new_data,new_len);
}
//mylog(log_trace,"[%s] send packet\n",dest.inner.ip_port.to_s());
}
else
{
mylog(log_fatal,"unknown fd,this should never happen\n");
myexit(-1);
}
}
delay_manager.check();
}
return 0;
}
int server_event_loop()
{
//char buf[buf_len];
int i, j, k;int ret;
int yes = 1;
int epoll_fd;
int remote_fd;
// conn_info_t conn_info;
init_listen_socket();
epoll_fd = epoll_create1(0);
assert(epoll_fd>0);
const int max_events = 4096;
struct epoll_event ev, events[max_events];
if (epoll_fd < 0) {
mylog(log_fatal,"epoll return %d\n", epoll_fd);
myexit(-1);
}
ev.events = EPOLLIN;
ev.data.u64 = local_listen_fd;
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, local_listen_fd, &ev);
if (ret!=0) {
mylog(log_fatal,"add udp_listen_fd error\n");
myexit(-1);
}
ev.events = EPOLLIN;
ev.data.u64 = delay_manager.get_timer_fd();
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, delay_manager.get_timer_fd(), &ev);
if (ret!= 0) {
mylog(log_fatal,"add delay_manager.get_timer_fd() error\n");
myexit(-1);
}
mylog(log_debug," delay_manager.get_timer_fd() =%d\n", delay_manager.get_timer_fd());
mylog(log_info,"now listening at %s:%d\n",my_ntoa(local_ip_uint32),local_port);
my_timer_t timer;
timer.add_fd_to_epoll(epoll_fd);
timer.set_timer_repeat_us(timer_interval*1000);
mylog(log_debug," timer.get_timer_fd() =%d\n",timer.get_timer_fd());
while(1)////////////////////////
{
if(about_to_exit) myexit(0);
int nfds = epoll_wait(epoll_fd, events, max_events, 180 * 1000);
if (nfds < 0) { //allow zero
if(errno==EINTR )
{
mylog(log_info,"epoll interrupted by signal\n");
myexit(0);
}
else
{
mylog(log_fatal,"epoll_wait return %d\n", nfds);
myexit(-1);
}
}
int idx;
for (idx = 0; idx < nfds; ++idx)
{
/*
if ((events[idx].data.u64 ) == (u64_t)timer_fd)
{
conn_manager.clear_inactive();
u64_t dummy;
read(timer_fd, &dummy, 8);
//current_time_rough=get_current_time();
}
else */
if(events[idx].data.u64==(u64_t)timer.get_timer_fd())
{
uint64_t value;
read(timer.get_timer_fd(), &value, 8);
conn_manager.clear_inactive();
mylog(log_trace,"events[idx].data.u64==(u64_t)timer.get_timer_fd()\n");
//conn_info.conv_manager.clear_inactive();
}
else if (events[idx].data.u64 == (u64_t)local_listen_fd)
{
mylog(log_trace,"events[idx].data.u64 == (u64_t)local_listen_fd\n");
//int recv_len;
char data[buf_len];
int data_len;
struct sockaddr_in udp_new_addr_in={0};
socklen_t udp_new_addr_len = sizeof(sockaddr_in);
if ((data_len = recvfrom(local_listen_fd, data, max_data_len, 0,
(struct sockaddr *) &udp_new_addr_in, &udp_new_addr_len)) == -1) {
mylog(log_error,"recv_from error,this shouldnt happen at client\n");
myexit(1);
};
mylog(log_trace,"Received packet from %s:%d,len: %d\n", inet_ntoa(udp_new_addr_in.sin_addr),
ntohs(udp_new_addr_in.sin_port),data_len);
if(!disable_mtu_warn&&data_len>=mtu_warn)///////////////////////delete this for type 0 in furture
{
mylog(log_warn,"huge packet,data len=%d (>=%d).strongly suggested to set a smaller mtu at upper level,to get rid of this warn\n ",data_len,mtu_warn);
}
if(rm_crc32(data,data_len)!=0)
{
mylog(log_debug,"crc32 check error");
continue;
}
ip_port_t ip_port;
ip_port.ip=udp_new_addr_in.sin_addr.s_addr;
ip_port.port=ntohs(udp_new_addr_in.sin_port);
mylog(log_trace,"ip_port= %s\n",ip_port.to_s());
if(!conn_manager.exist(ip_port))
{
if(conn_manager.mp.size() >=max_conn_num)
{
mylog(log_warn,"new connection %s ignored bc max_conn_num exceed\n",ip_port.to_s());
continue;
}
conn_manager.insert(ip_port);
conn_info_t &conn_info=conn_manager.find(ip_port);
conn_info.fec_encode_manager.re_init(fec_data_num,fec_redundant_num,fec_mtu,fec_pending_num,fec_pending_time,fec_type);
//conn_info.conv_manager.reserve(); //already reserved in constructor
u64_t fec_fd64=conn_info.fec_encode_manager.get_timer_fd64();
mylog(log_debug,"fec_fd64=%llu\n",fec_fd64);
ev.events = EPOLLIN;
ev.data.u64 = fec_fd64;
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd_manager.to_fd(fec_fd64), &ev);
fd_manager.get_info(fec_fd64).ip_port=ip_port;
conn_info.timer.add_fd64_to_epoll(epoll_fd);
conn_info.timer.set_timer_repeat_us(timer_interval*100);
mylog(log_debug,"conn_info.timer.get_timer_fd64()=%llu\n",conn_info.timer.get_timer_fd64());
u64_t timer_fd64=conn_info.timer.get_timer_fd64();
fd_manager.get_info(timer_fd64).ip_port=ip_port;
mylog(log_info,"new connection from %s,conn_info.timer_fd %lld,\n",ip_port.to_s(),timer.get_timer_fd64());
}
conn_info_t &conn_info=conn_manager.find(ip_port);
conn_info.update_active_time();
int out_n;char **out_arr;int *out_len;int *out_delay;
from_fec_to_normal(conn_info,data,data_len,out_n,out_arr,out_len,out_delay);
mylog(log_trace,"out_n= %d\n",out_n);
for(int i=0;i<out_n;i++)
{
u32_t conv;
char *new_data;
int new_len;
if(get_conv(conv,out_arr[i],out_len[i],new_data,new_len)!=0)
{
mylog(log_debug,"get_conv failed");
continue;
}
/*
id_t tmp_conv_id;
memcpy(&tmp_conv_id,&data_[0],sizeof(tmp_conv_id));
tmp_conv_id=ntohl(tmp_conv_id);*/
if (!conn_info.conv_manager.is_conv_used(conv))
{
if(conn_info.conv_manager.get_size() >=max_conv_num)
{
mylog(log_warn,"ignored new udp connect bc max_conv_num exceed\n");
continue;
}
int new_udp_fd;
ret=new_connected_socket(new_udp_fd,remote_ip_uint32,remote_port);
if (ret != 0) {
mylog(log_warn, "[%s]new_connected_socket failed\n",ip_port.to_s());
continue;
}
fd64_t fd64 = fd_manager.create(new_udp_fd);
ev.events = EPOLLIN;
ev.data.u64 = fd64;
ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, new_udp_fd, &ev);
conn_info.conv_manager.insert_conv(conv, fd64);
fd_manager.get_info(fd64).ip_port=ip_port;
mylog(log_info,"[%s]new conv %x,fd %d created,fd64=%llu\n",ip_port.to_s(),conv,new_udp_fd,fd64);
//assert(!conn_manager.exist_fd64(fd64));
//conn_manager.insert_fd64(fd64,ip_port);
}
conn_info.conv_manager.update_active_time(conv);
fd64_t fd64= conn_info.conv_manager.find_u64_by_conv(conv);
//int fd=fd_manager.fd64_to_fd(fd64);
dest_t dest;
dest.type=type_fd64;
dest.inner.fd64=fd64;
//dest.conv=conv;
delay_send(out_delay[i],dest,new_data,new_len);
}
}
else if (events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()) {
uint64_t value;
read(delay_manager.get_timer_fd(), &value, 8);
mylog(log_trace,"events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()\n");
}
else if (events[idx].data.u64 >u32_t(-1))
{
char data[buf_len];
int data_len;
u32_t conv;
fd64_t fd64=events[idx].data.u64;
mylog(log_trace,"events[idx].data.u64 >u32_t(-1),%llu\n",(u64_t)events[idx].data.u64);
if(!fd_manager.exist(fd64)) //fd64 has been closed
{
mylog(log_trace,"!fd_manager.exist(fd64)\n");
continue;
}
assert(fd_manager.exist_info(fd64));
ip_port_t ip_port=fd_manager.get_info(fd64).ip_port;
assert(conn_manager.exist(ip_port));
conn_info_t &conn_info=conn_manager.find(ip_port);
//conn_info.update_active_time(); //cant put it here
int out_n=-2;char **out_arr;int *out_len;int *out_delay;
dest_t dest;
dest.type=type_ip_port;
//dest.conv=conv;
dest.inner.ip_port=ip_port;
dest.cook=1;
if(fd64==conn_info.fec_encode_manager.get_timer_fd64())
{
//mylog(log_infol,"timer!!!\n");
uint64_t value;
if((ret=read(fd_manager.to_fd(fd64), &value, 8))!=8)
{
mylog(log_trace,"fd_manager.to_fd(fd64), &value, 8)!=8 ,%d\n",ret);
continue;
}
if(value==0)
{
mylog(log_trace,"value==0\n");
continue;
}
assert(value==1);
from_normal_to_fec(conn_info,0,0,out_n,out_arr,out_len,out_delay);
}
else if(fd64==conn_info.timer.get_timer_fd64())
{
uint64_t value;
read(conn_info.timer.get_timer_fd(), &value, 8);
conn_info.conv_manager.clear_inactive();
continue;
}
else
{
assert(conn_info.conv_manager.is_u64_used(fd64));
conv=conn_info.conv_manager.find_conv_by_u64(fd64);
conn_info.conv_manager.update_active_time(conv);
conn_info.update_active_time();
int fd=fd_manager.to_fd(fd64);
data_len=recv(fd,data,max_data_len,0);
mylog(log_trace,"received a packet from udp_fd,len:%d,conv=%d\n",data_len,conv);
if(data_len<0)
{
mylog(log_debug,"udp fd,recv_len<0 continue,%s\n",strerror(errno));
continue;
}
if(!disable_mtu_warn&&data_len>=mtu_warn)
{
mylog(log_warn,"huge packet,data len=%d (>=%d).strongly suggested to set a smaller mtu at upper level,to get rid of this warn\n ",data_len,mtu_warn);
}
char * new_data;
int new_len;
put_conv(conv,data,data_len,new_data,new_len);
from_normal_to_fec(conn_info,new_data,new_len,out_n,out_arr,out_len,out_delay);
}
mylog(log_trace,"out_n=%d\n",out_n);
for(int i=0;i<out_n;i++)
{
delay_send(out_delay[i],dest,out_arr[i],out_len[i]);
}
//mylog(log_trace,"[%s] send packet\n",ip_port.to_s());
}
else
{
mylog(log_fatal,"unknown fd,this should never happen\n");
myexit(-1);
}
}
delay_manager.check();
}
return 0;
}
int unit_test()
{
int i,j,k;
void *code=fec_new(3,6);
char arr[6][100]=
{
"aaa","bbb","ccc"
,"ddd","eee","fff"
};
char *data[6];
for(i=0;i<6;i++)
{
data[i]=arr[i];
}
rs_encode2(3,6,data,3);
//printf("%d %d",(int)(unsigned char)arr[5][0],(int)('a'^'b'^'c'^'d'^'e'));
for(i=0;i<6;i++)
{
printf("<%s>",data[i]);
}
data[0]=0;
//data[1]=0;
//data[5]=0;
int ret=rs_decode2(3,6,data,3);
printf("ret:%d\n",ret);
for(i=0;i<6;i++)
{
printf("<%s>",data[i]);
}
fec_free(code);
char arr2[6][100]=
{
"aaa11111","","ccc333333333"
,"ddd444","eee5555","ff6666"
};
blob_encode_t blob_encode;
for(int i=0;i<6;i++)
blob_encode.input(arr2[i],strlen(arr2[i]));
char **output;
int shard_len;
blob_encode.output(7,output,shard_len);
printf("<shard_len:%d>",shard_len);
blob_decode_t blob_decode;
for(int i=0;i<7;i++)
{
blob_decode.input(output[i],shard_len);
}
char **decode_output;
int * len_arr;
int num;
ret=blob_decode.output(num,decode_output,len_arr);
printf("<num:%d,ret:%d>\n",num,ret);
for(int i=0;i<num;i++)
{
char buf[1000]={0};
memcpy(buf,decode_output[i],len_arr[i]);
printf("<%d:%s>",len_arr[i],buf);
}
printf("\n");
static fec_encode_manager_t fec_encode_manager;
static fec_decode_manager_t fec_decode_manager;
{
string a = "11111";
string b = "22";
string c = "33333333";
fec_encode_manager.input((char *) a.c_str(), a.length());
fec_encode_manager.input((char *) b.c_str(), b.length());
fec_encode_manager.input((char *) c.c_str(), c.length());
fec_encode_manager.input(0, 0);
int n;
char **s_arr;
int *len;
fec_encode_manager.output(n,s_arr,len);
printf("<n:%d,len:%d>",n,len[0]);
for(int i=0;i<n;i++)
{
fec_decode_manager.input(s_arr[i],len[i]);
}
{
int n;char ** s_arr;int* len_arr;
fec_decode_manager.output(n,s_arr,len_arr);
printf("<n:%d>",n);
for(int i=0;i<n;i++)
{
s_arr[i][len_arr[i]]=0;
printf("<%s>\n",s_arr[i]);
}
}
}
{
string a = "aaaaaaa";
string b = "bbbbbbbbbbbbb";
string c = "ccc";
fec_encode_manager.input((char *) a.c_str(), a.length());
fec_encode_manager.input((char *) b.c_str(), b.length());
fec_encode_manager.input((char *) c.c_str(), c.length());
fec_encode_manager.input(0, 0);
int n;
char **s_arr;
int * len;
fec_encode_manager.output(n,s_arr,len);
printf("<n:%d,len:%d>",n,len[0]);
for(int i=0;i<n;i++)
{
if(i==1||i==3||i==5||i==0)
fec_decode_manager.input(s_arr[i],len[i]);
}
{
int n;char ** s_arr;int* len_arr;
fec_decode_manager.output(n,s_arr,len_arr);
printf("<n:%d>",n);
for(int i=0;i<n;i++)
{
s_arr[i][len_arr[i]]=0;
printf("<%s>\n",s_arr[i]);
}
}
}
return 0;
}
void print_help()
{
char git_version_buf[100]={0};
strncpy(git_version_buf,gitversion,10);
printf("UDPspeeder\n");
printf("git version:%s ",git_version_buf);
printf("build date:%s %s\n",__DATE__,__TIME__);
printf("repository: https://github.com/wangyu-/UDPspeeder\n");
printf("\n");
printf("usage:\n");
printf(" run as client : ./this_program -c -l local_listen_ip:local_port -r server_ip:server_port [options]\n");
printf(" run as server : ./this_program -s -l server_listen_ip:server_port -r remote_ip:remote_port [options]\n");
printf("\n");
printf("common option,must be same on both sides:\n");
printf(" -k,--key <string> key for simple xor encryption,default:\"secret key\"\n");
printf("main options:\n");
printf(" -d <number> duplicated packet number, -d 0 means no duplicate. default value:0\n");
printf(" -t <number> duplicated packet delay time, unit: 0.1ms,default value:20(2ms)\n");
printf(" -j <number> simulated jitter.randomly delay first packet for 0~jitter_value*0.1 ms,to\n");
printf(" create simulated jitter.default value:0.do not use if you dont\n");
printf(" know what it means\n");
printf(" --report <number> turn on udp send/recv report,and set a time interval for reporting,unit:s\n");
printf("advanced options:\n");
printf(" -t tmin:tmax simliar to -t above,but delay randomly between tmin and tmax\n");
printf(" -j jmin:jmax simliar to -j above,but create jitter randomly between jmin and jmax\n");
printf(" --random-drop <number> simulate packet loss ,unit:0.01%%\n");
printf(" --disable-filter disable duplicate packet filter.\n");
printf(" -m <number> max pending packets,to prevent the program from eating up all your memory,\n");
printf(" default value:0(disabled).\n");