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sync easyfaketcp,fixed a bug in try_to_list_and_bind2

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This commit is contained in:
wangyu- 2018-08-29 12:19:09 -05:00
parent a4aba62656
commit 4e9000c6b5
3 changed files with 48 additions and 11 deletions
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52
client.cpp
View File

@ -102,8 +102,21 @@ int client_on_timer(conn_info_t &conn_info) //for client. called when a timer is
}
if(raw_mode==mode_faketcp)
{
conn_info.state.client_current_state=client_tcp_handshake;
mylog(log_info,"state changed from client_idle to client_tcp_handshake\n");
if(use_tcp_dummy_socket)
{
setnonblocking(bind_fd);
int ret=connect(bind_fd,(struct sockaddr *)&remote_addr.inner,remote_addr.get_len());
mylog(log_info,"ret=%d,errno=%s,%d %s\n",ret,get_sock_error(),bind_fd,remote_addr.get_str());
conn_info.state.client_current_state=client_tcp_handshake_dummy;
mylog(log_info,"state changed from client_idle to client_tcp_handshake_dummy\n");
}
else
{
conn_info.state.client_current_state=client_tcp_handshake;
mylog(log_info,"state changed from client_idle to client_tcp_handshake\n");
}
}
conn_info.last_state_time=get_current_time();
@ -148,6 +161,17 @@ int client_on_timer(conn_info_t &conn_info) //for client. called when a timer is
}
return 0;
}
else if(conn_info.state.client_current_state==client_tcp_handshake_dummy)
{
assert(raw_mode==mode_faketcp);
if (get_current_time() - conn_info.last_state_time > client_handshake_timeout)
{
conn_info.state.client_current_state = client_idle;
mylog(log_info, "state back to client_idle from client_tcp_handshake_dummy\n");
return 0;
}
}
else if(conn_info.state.client_current_state==client_handshake1)//send and resend handshake1
{
if(get_current_time()-conn_info.last_state_time>client_handshake_timeout)
@ -173,7 +197,9 @@ int client_on_timer(conn_info_t &conn_info) //for client. called when a timer is
send_info.psh = 0;
send_info.syn = 0;
send_info.ack = 1;
send_raw0(raw_info, 0, 0);
if(!use_tcp_dummy_socket)
send_raw0(raw_info, 0, 0);
send_handshake(raw_info,conn_info.my_id,0,const_id);
@ -299,7 +325,7 @@ int client_on_raw_recv(conn_info_t &conn_info) //called when raw fd received a p
discard_raw_packet();
//recv(raw_recv_fd, 0,0, 0 );
}
else if(conn_info.state.client_current_state==client_tcp_handshake)//received syn ack
else if(conn_info.state.client_current_state==client_tcp_handshake||conn_info.state.client_current_state==client_tcp_handshake_dummy)//received syn ack
{
assert(raw_mode==mode_faketcp);
if(recv_raw0(raw_info,data,data_len)<0)
@ -313,14 +339,24 @@ int client_on_raw_recv(conn_info_t &conn_info) //called when raw fd received a p
}
if(data_len==0&&raw_info.recv_info.syn==1&&raw_info.recv_info.ack==1)
{
if(recv_info.ack_seq!=send_info.seq+1)
if(conn_info.state.client_current_state==client_tcp_handshake)
{
mylog(log_debug,"seq ack_seq mis match\n");
return -1;
if(recv_info.ack_seq!=send_info.seq+1)
{
mylog(log_debug,"seq ack_seq mis match\n");
return -1;
}
mylog(log_info,"state changed from client_tcp_handshake to client_handshake1\n");
}
else
{
send_info.seq=recv_info.ack_seq-1;
mylog(log_info,"state changed from client_tcp_dummy to client_handshake1\n");
//send_info.ack_seq=recv_info.seq+1;
}
conn_info.state.client_current_state = client_handshake1;
mylog(log_info,"state changed from client_tcp_handshake to client_handshake1\n");
conn_info.last_state_time = get_current_time();
conn_info.last_hb_sent_time=0;
client_on_timer(conn_info);

2
misc.h
View File

@ -64,7 +64,7 @@ const uint32_t server_conn_timeout=conv_timeout+60000;//ms. this should be 60s+
const u32_t iptables_rule_keep_interval=20;//unit: second;
enum server_current_state_t {server_idle=0,server_handshake1,server_ready}; //server state machine
enum client_current_state_t {client_idle=0,client_tcp_handshake,client_handshake1,client_handshake2,client_ready};//client state machine
enum client_current_state_t {client_idle=0,client_tcp_handshake,client_handshake1,client_handshake2,client_ready,client_tcp_handshake_dummy};//client state machine
enum raw_mode_t{mode_faketcp=0,mode_udp,mode_icmp,mode_end};
enum program_mode_t {unset_mode=0,client_mode,server_mode};

5
network.cpp
View File

@ -2495,7 +2495,7 @@ int try_to_list_and_bind2(int &fd,address_t address) //try to bind to a port,ma
mylog(log_debug,"bind fail\n");
return -1;
}
if(raw_mode==mode_faketcp)
if(raw_mode==mode_faketcp&&!use_tcp_dummy_socket)
{
if (listen(fd, SOMAXCONN) != 0) {
@ -2528,7 +2528,8 @@ int client_bind_to_a_new_port2(int &fd,const address_t& address)//find a free po
for(int i=0;i<1000;i++)//try 1000 times at max,this should be enough
{
tmp.set_port(raw_send_port);
if (try_to_list_and_bind2(fd,address)==0)
printf("<%s>\n",tmp.get_str());
if (try_to_list_and_bind2(fd,tmp)==0)
{
return raw_send_port;
}