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udp2raw/server.cpp
root e8daf7c263 more fix of memory access
2020-07-26 19:07:17 +00:00

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/*
* server.cpp
*
* Created on: Aug 29, 2018
* Author: root
*/
#ifndef UDP2RAW_MP
#include "common.h"
#include "network.h"
#include "connection.h"
#include "misc.h"
#include "log.h"
#include "lib/md5.h"
#include "encrypt.h"
#include "fd_manager.h"
int server_on_timer_multi(conn_info_t &conn_info) //for server. called when a timer is ready in epoll.for server,there will be one timer for every connection
// there is also a global timer for server,but its not handled here
{
char ip_port[max_addr_len];
//u32_t ip=conn_info.raw_info.send_info.dst_ip;
//u32_t port=conn_info.raw_info.send_info.dst_port;
address_t tmp_addr;
tmp_addr.from_ip_port_new(raw_ip_version,&conn_info.raw_info.send_info.new_dst_ip,conn_info.raw_info.send_info.dst_port);
//sprintf(ip_port,"%s:%d",my_ntoa(ip),port);
tmp_addr.to_str(ip_port);
//keep_iptables_rule();
mylog(log_trace,"server timer!\n");
raw_info_t &raw_info=conn_info.raw_info;
assert(conn_info.state.server_current_state==server_ready);
if(conn_info.state.server_current_state==server_ready)
{
conn_info.blob->conv_manager.s.clear_inactive(ip_port);
/*
if( get_current_time()-conn_info.last_hb_recv_time>heartbeat_timeout )
{
mylog(log_trace,"%lld %lld\n",get_current_time(),conn_info.last_state_time);
conn_info.server_current_state=server_nothing;
//conn_manager.current_ready_ip=0;
//conn_manager.current_ready_port=0;
mylog(log_info,"changed state to server_nothing\n");
return 0;
}*/ //dont need to do this at server,conn_manger will clear expired connections
if(get_current_time()-conn_info.last_hb_sent_time<heartbeat_interval)
{
return 0;
}
if(hb_mode==0)
send_safer(conn_info,'h',hb_buf,0); /////////////send
else
send_safer(conn_info,'h',hb_buf,hb_len);
conn_info.last_hb_sent_time=get_current_time();
mylog(log_debug,"heart beat sent<%x,%x>\n",conn_info.my_id,conn_info.oppsite_id);
}
else
{
mylog(log_fatal,"this shouldnt happen!\n");
myexit(-1);
}
return 0;
}
int server_on_raw_recv_ready(conn_info_t &conn_info,char * ip_port,char type,char *data,int data_len) //called while the state for a connection is server_ready
//receives data and heart beat by recv_safer.
{
raw_info_t &raw_info = conn_info.raw_info;
packet_info_t &send_info = conn_info.raw_info.send_info;
packet_info_t &recv_info = conn_info.raw_info.recv_info;
//char ip_port[40];
//sprintf(ip_port,"%s:%d",my_ntoa(recv_info.src_ip),recv_info.src_port);
/*
if (recv_info.src_ip != send_info.dst_ip
|| recv_info.src_port != send_info.dst_port) {
mylog(log_debug, "unexpected adress\n");
return 0;
}*/
if (type == 'h' && data_len >= 0) {
//u32_t tmp = ntohl(*((u32_t *) &data[sizeof(u32_t)]));
mylog(log_debug,"[%s][hb]received hb \n",ip_port);
conn_info.last_hb_recv_time = get_current_time();
return 0;
} else if (type== 'd' && data_len >=int( sizeof(u32_t) ))
{
//u32_t tmp_conv_id = ntohl(*((u32_t *) &data[0]));
my_id_t tmp_conv_id;
memcpy(&tmp_conv_id,&data[0],sizeof(tmp_conv_id));
tmp_conv_id=ntohl(tmp_conv_id);
if(hb_mode==0)
conn_info.last_hb_recv_time = get_current_time();
mylog(log_trace, "conv:%u\n", tmp_conv_id);
if (!conn_info.blob->conv_manager.s.is_conv_used(tmp_conv_id)) {
if (conn_info.blob->conv_manager.s.get_size() >= max_conv_num) {
mylog(log_warn,
"[%s]ignored new conv %x connect bc max_conv_num exceed\n",ip_port,
tmp_conv_id);
return 0;
}
/*
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(remote_port);
remote_addr_in.sin_addr.s_addr = remote_ip_uint32;
int new_udp_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (new_udp_fd < 0) {
mylog(log_warn, "[%s]create udp_fd error\n",ip_port);
return -1;
}
setnonblocking(new_udp_fd);
set_buf_size(new_udp_fd,socket_buf_size);
mylog(log_debug, "[%s]created new udp_fd %d\n",ip_port, new_udp_fd);
int ret = connect(new_udp_fd, (struct sockaddr *) &remote_addr_in,
slen);
if (ret != 0) {
mylog(log_warn, "udp fd connect fail\n");
close(new_udp_fd);
return -1;
}*/
int new_udp_fd=remote_addr.new_connected_udp_fd();
if (new_udp_fd < 0) {
mylog(log_warn, "[%s]new_connected_udp_fd() failed\n",ip_port);
return -1;
}
struct epoll_event ev;
fd64_t new_udp_fd64 = fd_manager.create(new_udp_fd);
fd_manager.get_info(new_udp_fd64).p_conn_info=&conn_info;
mylog(log_trace, "[%s]u64: %lld\n",ip_port, new_udp_fd64);
ev.events = EPOLLIN;
ev.data.u64 = new_udp_fd64;
int ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, new_udp_fd, &ev);
if (ret != 0) {
mylog(log_warn, "[%s]add udp_fd error\n",ip_port);
close(new_udp_fd);
return -1;
}
conn_info.blob->conv_manager.s.insert_conv(tmp_conv_id, new_udp_fd64);
//assert(conn_manager.udp_fd_mp.find(new_udp_fd)==conn_manager.udp_fd_mp.end());
//conn_manager.udp_fd_mp[new_udp_fd] = &conn_info;
//pack_u64(conn_info.raw_info.recv_info.src_ip,conn_info.raw_info.recv_info.src_port);
mylog(log_info, "[%s]new conv conv_id=%x, assigned fd=%d\n",ip_port,
tmp_conv_id, new_udp_fd);
}
fd64_t fd64 = conn_info.blob->conv_manager.s.find_data_by_conv(tmp_conv_id);
conn_info.blob->conv_manager.s.update_active_time(tmp_conv_id);
int fd = fd_manager.to_fd(fd64);
mylog(log_trace, "[%s]received a data from fake tcp,len:%d\n",ip_port, data_len);
int ret = send(fd, data + sizeof(u32_t),
data_len - ( sizeof(u32_t)), 0);
mylog(log_trace, "[%s]%d byte sent ,fd :%d\n ",ip_port, ret, fd);
if (ret < 0) {
mylog(log_warn, "send returned %d\n", ret);
//perror("what happened????");
}
return 0;
}
return 0;
}
int server_on_raw_recv_pre_ready(conn_info_t &conn_info,char * ip_port,u32_t tmp_oppsite_const_id)// do prepare work before state change to server ready for a specifc connection
//connection recovery is also handle here
{
//u32_t ip;uint16_t port;
//ip=conn_info.raw_info.recv_info.src_ip;
//port=conn_info.raw_info.recv_info.src_port;
//char ip_port[40];
//sprintf(ip_port,"%s:%d",my_ntoa(ip),port);
mylog(log_info,"[%s]received handshake oppsite_id:%x my_id:%x\n",ip_port,conn_info.oppsite_id,conn_info.my_id);
mylog(log_info,"[%s]oppsite const_id:%x \n",ip_port,tmp_oppsite_const_id);
if(conn_manager.const_id_mp.find(tmp_oppsite_const_id)==conn_manager.const_id_mp.end())
{
//conn_manager.const_id_mp=
if(conn_manager.ready_num>=max_ready_conn_num)
{
mylog(log_info,"[%s]max_ready_conn_num,cant turn to ready\n",ip_port);
conn_info.state.server_current_state =server_idle;
return 0;
}
conn_info.prepare();
conn_info.state.server_current_state = server_ready;
conn_info.oppsite_const_id=tmp_oppsite_const_id;
conn_manager.ready_num++;
conn_manager.const_id_mp[tmp_oppsite_const_id]=&conn_info;
//conn_info.last_state_time=get_current_time(); //dont change this!!!!!!!!!!!!!!!!!!!!!!!!!
//conn_manager.current_ready_ip=ip;
//conn_manager.current_ready_port=port;
//my_id=conn_info.my_id;
//oppsite_id=conn_info.oppsite_id;
conn_info.last_hb_recv_time = get_current_time();
conn_info.last_hb_sent_time = conn_info.last_hb_recv_time;//=get_current_time()
if(hb_mode==0)
send_safer(conn_info,'h',hb_buf,0);/////////////send
else
send_safer(conn_info,'h',hb_buf,hb_len);
mylog(log_info, "[%s]changed state to server_ready\n",ip_port);
conn_info.blob->anti_replay.re_init();
//g_conn_info=conn_info;
int new_timer_fd;
set_timer_server(epollfd, new_timer_fd,conn_info.timer_fd64);
fd_manager.get_info(conn_info.timer_fd64).p_conn_info=&conn_info;
//assert(conn_manager.timer_fd_mp.find(new_timer_fd)==conn_manager.timer_fd_mp.end());
//conn_manager.timer_fd_mp[new_timer_fd] = &conn_info;//pack_u64(ip,port);
//timer_fd_mp[new_timer_fd]
/*
if(oppsite_const_id!=0&&tmp_oppsite_const_id!=oppsite_const_id) //TODO MOVE TO READY
{
mylog(log_info,"cleared all conv bc of const id doesnt match\n");
conv_manager.clear();
}*/
//oppsite_const_id=tmp_oppsite_const_id;
}
else
{
conn_info_t &ori_conn_info=*conn_manager.const_id_mp[tmp_oppsite_const_id];
if(ori_conn_info.state.server_current_state==server_ready)
{
if(conn_info.last_state_time<ori_conn_info.last_state_time)
{
mylog(log_info,"[%s]conn_info.last_state_time<ori_conn_info.last_state_time. ignored new handshake\n",ip_port);
conn_info.state.server_current_state=server_idle;
conn_info.oppsite_const_id=0;
return 0;
}
address_t addr1;addr1.from_ip_port_new(raw_ip_version,&ori_conn_info.raw_info.recv_info.new_src_ip,ori_conn_info.raw_info.recv_info.src_port);
if(!conn_manager.exist(addr1))//TODO remove this
{
mylog(log_fatal,"[%s]this shouldnt happen\n",ip_port);
myexit(-1);
}
address_t addr2;addr2.from_ip_port_new(raw_ip_version,&conn_info.raw_info.recv_info.new_src_ip,conn_info.raw_info.recv_info.src_port);
if(!conn_manager.exist(addr2))//TODO remove this
{
mylog(log_fatal,"[%s]this shouldnt happen2\n",ip_port);
myexit(-1);
}
conn_info_t *&p_ori=conn_manager.find_insert_p(addr1);
conn_info_t *&p=conn_manager.find_insert_p(addr2);
conn_info_t *tmp=p;
p=p_ori;
p_ori=tmp;
mylog(log_info,"[%s]grabbed a connection\n",ip_port);
//ori_conn_info.state.server_current_state=server_ready;
ori_conn_info.recover(conn_info);
//send_safer(ori_conn_info, 'h',hb_buf, hb_len);
//ori_conn_info.blob->anti_replay.re_init();
if(hb_mode==0)
send_safer(ori_conn_info,'h',hb_buf,0);/////////////send
else
send_safer(ori_conn_info,'h',hb_buf,hb_len);
ori_conn_info.last_hb_recv_time=get_current_time();
conn_info.state.server_current_state=server_idle;
conn_info.oppsite_const_id=0;
}
else
{
mylog(log_fatal,"[%s]this should never happen\n",ip_port);
myexit(-1);
}
return 0;
}
return 0;
}
int server_on_raw_recv_handshake1(conn_info_t &conn_info,char * ip_port,char * data, int data_len)//called when server received a handshake1 packet from client
{
packet_info_t &send_info=conn_info.raw_info.send_info;
packet_info_t &recv_info=conn_info.raw_info.recv_info;
raw_info_t &raw_info=conn_info.raw_info;
//u32_t ip=conn_info.raw_info.recv_info.src_ip;
//uint16_t port=conn_info.raw_info.recv_info.src_port;
//char ip_port[40];
//sprintf(ip_port,"%s:%d",my_ntoa(ip),port);
if(data_len<int( 3*sizeof(my_id_t)))
{
mylog(log_debug,"[%s] data_len=%d too short to be a handshake\n",ip_port,data_len);
return -1;
}
//id_t tmp_oppsite_id= ntohl(* ((u32_t *)&data[0]));
my_id_t tmp_oppsite_id;
memcpy(&tmp_oppsite_id,(u32_t *)&data[0],sizeof(tmp_oppsite_id));
tmp_oppsite_id=ntohl(tmp_oppsite_id);
//id_t tmp_my_id=ntohl(* ((u32_t *)&data[sizeof(id_t)]));
my_id_t tmp_my_id;
memcpy(&tmp_my_id,&data[sizeof(my_id_t)],sizeof(tmp_my_id));
tmp_my_id=ntohl(tmp_my_id);
if(tmp_my_id==0) //received init handshake again
{
if(raw_mode==mode_faketcp)
{
send_info.seq=recv_info.ack_seq;
send_info.ack_seq=recv_info.seq+raw_info.recv_info.data_len;
send_info.ts_ack=recv_info.ts;
}
if(raw_mode==mode_icmp)
{
send_info.my_icmp_seq=recv_info.my_icmp_seq;
}
send_handshake(raw_info,conn_info.my_id,tmp_oppsite_id,const_id); //////////////send
mylog(log_info,"[%s]changed state to server_handshake1,my_id is %x\n",ip_port,conn_info.my_id);
}
else if(tmp_my_id==conn_info.my_id)
{
conn_info.oppsite_id=tmp_oppsite_id;
//id_t tmp_oppsite_const_id=ntohl(* ((u32_t *)&data[sizeof(id_t)*2]));
my_id_t tmp_oppsite_const_id;
memcpy(&tmp_oppsite_const_id,&data[sizeof(my_id_t)*2],sizeof(tmp_oppsite_const_id));
tmp_oppsite_const_id=ntohl(tmp_oppsite_const_id);
if(raw_mode==mode_faketcp)
{
send_info.seq=recv_info.ack_seq;
send_info.ack_seq=recv_info.seq+raw_info.recv_info.data_len;
send_info.ts_ack=recv_info.ts;
}
if(raw_mode==mode_icmp)
{
send_info.my_icmp_seq=recv_info.my_icmp_seq;
}
server_on_raw_recv_pre_ready(conn_info,ip_port,tmp_oppsite_const_id);
}
else
{
mylog(log_debug,"[%s]invalid my_id %x,my_id is %x\n",ip_port,tmp_my_id,conn_info.my_id);
}
return 0;
}
int server_on_recv_safer_multi(conn_info_t &conn_info,char type,char *data,int data_len)
{
return 0;
}
int server_on_raw_recv_multi() //called when server received an raw packet
{
char dummy_buf[buf_len];
raw_info_t peek_raw_info;
peek_raw_info.peek=1;
packet_info_t &peek_info=peek_raw_info.recv_info;
mylog(log_trace,"got a packet\n");
if(pre_recv_raw_packet()<0) return -1;
if(peek_raw(peek_raw_info)<0)
{
discard_raw_packet();
//recv(raw_recv_fd, 0,0, 0 );//
//struct sockaddr saddr;
//socklen_t saddr_size=sizeof(saddr);
///recvfrom(raw_recv_fd, 0,0, 0 ,&saddr , &saddr_size);//
mylog(log_trace,"peek_raw failed\n");
return -1;
}else
{
mylog(log_trace,"peek_raw success\n");
}
//u32_t ip=peek_info.src_ip;uint16_t port=peek_info.src_port;
int data_len; char *data;
address_t addr;
addr.from_ip_port_new(raw_ip_version,&peek_info.new_src_ip,peek_info.src_port);
char ip_port[max_addr_len];
addr.to_str(ip_port);
//sprintf(ip_port,"%s:%d",my_ntoa(ip),port);
mylog(log_trace,"[%s]peek_raw\n",ip_port);
if(raw_mode==mode_faketcp&&peek_info.syn==1)
{
if(!conn_manager.exist(addr)||conn_manager.find_insert(addr).state.server_current_state!=server_ready)
{//reply any syn ,before state become ready
raw_info_t tmp_raw_info;
if(recv_raw0(tmp_raw_info,data,data_len)<0)
{
return 0;
}
if(data_len>=max_data_len+1)
{
mylog(log_debug,"data_len=%d >= max_data_len+1,ignored",data_len);
return -1;
}
if(use_tcp_dummy_socket!=0)
return 0;
raw_info_t &raw_info=tmp_raw_info;
packet_info_t &send_info=raw_info.send_info;
packet_info_t &recv_info=raw_info.recv_info;
send_info.new_src_ip=recv_info.new_dst_ip;
send_info.src_port=recv_info.dst_port;
send_info.dst_port = recv_info.src_port;
send_info.new_dst_ip = recv_info.new_src_ip;
if(lower_level)
{
handle_lower_level(raw_info);
}
if(data_len==0&&raw_info.recv_info.syn==1&&raw_info.recv_info.ack==0)
{
send_info.ack_seq = recv_info.seq + 1;
send_info.psh = 0;
send_info.syn = 1;
send_info.ack = 1;
send_info.ts_ack=recv_info.ts;
mylog(log_info,"[%s]received syn,sent syn ack back\n",ip_port);
send_raw0(raw_info, 0, 0);
return 0;
}
}
else
{
discard_raw_packet();
//recv(raw_recv_fd, 0,0,0);
}
return 0;
}
if(!conn_manager.exist(addr))
{
if(conn_manager.mp.size()>=max_handshake_conn_num)
{
mylog(log_info,"[%s]reached max_handshake_conn_num,ignored new handshake\n",ip_port);
discard_raw_packet();
//recv(raw_recv_fd, 0,0, 0 );//
return 0;
}
raw_info_t tmp_raw_info;
if(raw_mode==mode_icmp)
{
tmp_raw_info.send_info.dst_port=tmp_raw_info.send_info.src_port=addr.get_port();
}
if(recv_bare(tmp_raw_info,data,data_len)<0)
{
return 0;
}
if(data_len<int( 3*sizeof(my_id_t)))
{
mylog(log_debug,"[%s]too short to be a handshake\n",ip_port);
return -1;
}
//id_t zero=ntohl(* ((u32_t *)&data[sizeof(id_t)]));
my_id_t zero;
memcpy(&zero,&data[sizeof(my_id_t)],sizeof(zero));
zero=ntohl(zero);
if(zero!=0)
{
mylog(log_debug,"[%s]not a invalid initial handshake\n",ip_port);
return -1;
}
mylog(log_info,"[%s]got packet from a new ip\n",ip_port);
conn_info_t &conn_info=conn_manager.find_insert(addr);
conn_info.raw_info=tmp_raw_info;
raw_info_t &raw_info=conn_info.raw_info;
packet_info_t &send_info=conn_info.raw_info.send_info;
packet_info_t &recv_info=conn_info.raw_info.recv_info;
//conn_info.ip_port.ip=ip;
//conn_info.ip_port.port=port;
send_info.new_src_ip=recv_info.new_dst_ip;
send_info.src_port=recv_info.dst_port;
send_info.dst_port = recv_info.src_port;
send_info.new_dst_ip = recv_info.new_src_ip;
if(lower_level)
{
handle_lower_level(raw_info);
}
//id_t tmp_oppsite_id= ntohl(* ((u32_t *)&data[0]));
//mylog(log_info,"[%s]handshake1 received %x\n",ip_port,tmp_oppsite_id);
conn_info.my_id=get_true_random_number_nz();
mylog(log_info,"[%s]created new conn,state: server_handshake1,my_id is %x\n",ip_port,conn_info.my_id);
conn_info.state.server_current_state = server_handshake1;
conn_info.last_state_time = get_current_time();
server_on_raw_recv_handshake1(conn_info,ip_port,data,data_len);
return 0;
}
conn_info_t & conn_info=conn_manager.find_insert(addr);//insert if not exist
packet_info_t &send_info=conn_info.raw_info.send_info;
packet_info_t &recv_info=conn_info.raw_info.recv_info;
raw_info_t &raw_info=conn_info.raw_info;
if(conn_info.state.server_current_state==server_handshake1)
{
if(recv_bare(raw_info,data,data_len)!=0)
{
return -1;
}
return server_on_raw_recv_handshake1(conn_info,ip_port,data,data_len);
}
if(conn_info.state.server_current_state==server_ready)
{
vector<char> type_vec;
vector<string> data_vec;
recv_safer_multi(conn_info,type_vec,data_vec);
if(data_vec.empty())
{
mylog(log_debug,"recv_safer failed!\n");
return -1;
}
for(int i=0;i<(int)type_vec.size();i++)
{
char type=type_vec[i];
char *data=(char *)data_vec[i].c_str(); //be careful, do not append data to it
int data_len=data_vec[i].length();
server_on_raw_recv_ready(conn_info,ip_port,type,data,data_len);
}
return 0;
}
if(conn_info.state.server_current_state==server_idle)
{
discard_raw_packet();
//recv(raw_recv_fd, 0,0, 0 );//
return 0;
}
mylog(log_fatal,"we should never run to here\n");
myexit(-1);
return -1;
}
int server_on_udp_recv(conn_info_t &conn_info,fd64_t fd64)
{
char buf[buf_len];
if(conn_info.state.server_current_state!=server_ready)//TODO remove this for peformance
{
mylog(log_fatal,"p_conn_info->state.server_current_state!=server_ready!!!this shouldnt happen\n");
myexit(-1);
}
//conn_info_t &conn_info=*p_conn_info;
assert(conn_info.blob->conv_manager.s.is_data_used(fd64));
u32_t conv_id=conn_info.blob->conv_manager.s.find_conv_by_data(fd64);
int fd=fd_manager.to_fd(fd64);
int recv_len=recv(fd,buf,max_data_len+1,0);
mylog(log_trace,"received a packet from udp_fd,len:%d\n",recv_len);
if(recv_len==max_data_len+1)
{
mylog(log_warn,"huge packet, data_len > %d,dropped\n",max_data_len);
return -1;
}
if(recv_len<0)
{
mylog(log_debug,"udp fd,recv_len<0 continue,%s\n",strerror(errno));
return -1;
}
if(recv_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 ",recv_len,mtu_warn);
}
//conn_info.conv_manager->update_active_time(conv_id); server dosnt update from upd side,only update from raw side. (client updates at both side)
if(conn_info.state.server_current_state==server_ready)
{
send_data_safer(conn_info,buf,recv_len,conv_id);
//send_data(g_packet_info_send,buf,recv_len,my_id,oppsite_id,conv_id);
mylog(log_trace,"send_data_safer ,sent !!\n");
}
return 0;
}
int server_event_loop()
{
char buf[buf_len];
int i, j, k;int ret;
if(raw_ip_version==AF_INET)
{
if(local_addr.inner.ipv4.sin_addr.s_addr!=0)
{
bind_addr_used=1;
bind_addr.v4=local_addr.inner.ipv4.sin_addr.s_addr;
}
}
else
{
assert(raw_ip_version==AF_INET6);
char zero_arr[16]={0};
if(memcmp(&local_addr.inner.ipv6.sin6_addr,zero_arr,16)!=0)
{
bind_addr_used=1;
bind_addr.v6=local_addr.inner.ipv6.sin6_addr;
}
}
//bind_address_uint32=local_ip_uint32;//only server has bind adress,client sets it to zero
if(lower_level)
{
if(lower_level_manual)
{
init_ifindex(if_name,raw_send_fd,ifindex);
mylog(log_info,"we are running at lower-level (manual) mode\n");
}
else
{
mylog(log_info,"we are running at lower-level (auto) mode\n");
}
}
if(raw_mode==mode_faketcp)
{
bind_fd=socket(local_addr.get_type(),SOCK_STREAM,0);
}
else if(raw_mode==mode_udp||raw_mode==mode_icmp)//bind an adress to avoid collision,for icmp,there is no port,just bind a udp port
{
bind_fd=socket(local_addr.get_type(),SOCK_DGRAM,0);
}
//struct sockaddr_in temp_bind_addr={0};
// bzero(&temp_bind_addr, sizeof(temp_bind_addr));
//temp_bind_addr.sin_family = AF_INET;
//temp_bind_addr.sin_port = local_addr.get_port();
//temp_bind_addr.sin_addr.s_addr = local_addr.inner.ipv4.sin_addr.s_addr;
if (bind(bind_fd, (struct sockaddr*)&local_addr.inner, local_addr.get_len()) !=0)
{
mylog(log_fatal,"bind fail\n");
myexit(-1);
}
if(raw_mode==mode_faketcp)
{
if(listen(bind_fd, SOMAXCONN) != 0 )
{
mylog(log_fatal,"listen fail\n");
myexit(-1);
}
}
//init_raw_socket();
init_filter(local_addr.get_port());//bpf filter
epollfd = epoll_create1(0);
const int max_events = 4096;
struct epoll_event ev, events[max_events];
if (epollfd < 0) {
mylog(log_fatal,"epoll return %d\n", epollfd);
myexit(-1);
}
ev.events = EPOLLIN;
ev.data.u64 = raw_recv_fd;
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, raw_recv_fd, &ev);
if (ret!= 0) {
mylog(log_fatal,"add raw_fd error\n");
myexit(-1);
}
int timer_fd;
set_timer(epollfd,timer_fd);
u64_t begin_time=0;
u64_t end_time=0;
mylog(log_info,"now listening at %s\n",local_addr.get_str());
int fifo_fd=-1;
if(fifo_file[0]!=0)
{
fifo_fd=create_fifo(fifo_file);
ev.events = EPOLLIN;
ev.data.u64 = fifo_fd;
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fifo_fd, &ev);
if (ret!= 0) {
mylog(log_fatal,"add fifo_fd to epoll error %s\n",strerror(errno));
myexit(-1);
}
mylog(log_info,"fifo_file=%s\n",fifo_file);
}
while(1)////////////////////////
{
if(about_to_exit) myexit(0);
int nfds = epoll_wait(epollfd, events, max_events, 180 * 1000);
if (nfds < 0) { //allow zero
if(errno==EINTR )
{
mylog(log_info,"epoll interrupted by signal,continue\n");
//myexit(0);
}
else
{
mylog(log_fatal,"epoll_wait return %d,%s\n", nfds,strerror(errno));
myexit(-1);
}
}
int idx;
for (idx = 0; idx < nfds; ++idx)
{
//mylog(log_debug,"ndfs: %d \n",nfds);
epoll_trigger_counter++;
//printf("%d %d %d %d\n",timer_fd,raw_recv_fd,raw_send_fd,n);
if ((events[idx].data.u64 ) == (u64_t)timer_fd)
{
if(debug_flag)begin_time=get_current_time();
conn_manager.clear_inactive();
u64_t dummy;
int unused=read(timer_fd, &dummy, 8);
//current_time_rough=get_current_time();
if(debug_flag)
{
end_time=get_current_time();
mylog(log_debug,"timer_fd,%llu,%llu,%llu\n",begin_time,end_time,end_time-begin_time);
}
mylog(log_trace,"epoll_trigger_counter: %d \n",epoll_trigger_counter);
epoll_trigger_counter=0;
}
else if (events[idx].data.u64 == (u64_t)raw_recv_fd)
{
if(debug_flag)begin_time=get_current_time();
server_on_raw_recv_multi();
if(debug_flag)
{
end_time=get_current_time();
mylog(log_debug,"raw_recv_fd,%llu,%llu,%llu \n",begin_time,end_time,end_time-begin_time);
}
}
else if (events[idx].data.u64 == (u64_t)fifo_fd)
{
int len=read (fifo_fd, buf, sizeof (buf));
if(len<0)
{
mylog(log_warn,"fifo read failed len=%d,errno=%s\n",len,strerror(errno));
continue;
}
//assert(len>=0);
buf[len]=0;
while(len>=1&&buf[len-1]=='\n')
buf[len-1]=0;
mylog(log_info,"got data from fifo,len=%d,s=[%s]\n",len,buf);
mylog(log_info,"unknown command\n");
}
else if (events[idx].data.u64>u32_t(-1) )
{
fd64_t fd64=events[idx].data.u64;
if(!fd_manager.exist(fd64))
{
mylog(log_trace ,"fd64 no longer exist\n");
return -1;
}
assert(fd_manager.exist_info(fd64));
conn_info_t* p_conn_info=fd_manager.get_info(fd64).p_conn_info;
conn_info_t &conn_info=*p_conn_info;
if(fd64==conn_info.timer_fd64)//////////timer_fd64
{
if(debug_flag)begin_time=get_current_time();
int fd=fd_manager.to_fd(fd64);
u64_t dummy;
int unused=read(fd, &dummy, 8);
assert(conn_info.state.server_current_state == server_ready); //TODO remove this for peformance
server_on_timer_multi(conn_info);
if(debug_flag)
{
end_time=get_current_time();
mylog(log_debug,"(events[idx].data.u64 >>32u) == 2u ,%llu,%llu,%llu \n",begin_time,end_time,end_time-begin_time);
}
}
else//udp_fd64
{
if(debug_flag)begin_time=get_current_time();
server_on_udp_recv(conn_info,fd64);
if(debug_flag)
{
end_time=get_current_time();
mylog(log_debug,"(events[idx].data.u64 >>32u) == 1u,%lld,%lld,%lld \n",begin_time,end_time,end_time-begin_time);
}
}
}
else
{
mylog(log_fatal,"unknown fd,this should never happen\n");
myexit(-1);
}
}
}
return 0;
}
#endif
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