protected void socket_data_arrival(easy_socket.ip_header.ipv4_header sender, easy_socket.ip_header.EventArgs_FullPacket e)
{
if (this.sniff_mode)
{
// ip_header_server has checked that these are tcp packets see the arguments of ip_header_server.start
if (this.b_check_ip)// check before decoding for speed reasons
{
// if ip must be checked, check it
if (sender.destination_address != this.spy_ip)
{
if (!this.sniff_outgoing_packets)
{
return;// packet is not satisfying condition
}
// else check outgoing condition
if (sender.source_address != this.spy_ip)
{
return;
}
}
}
}
if (this.decode(sender.source_address, sender.destination_address, sender.data) != easy_socket.tcp_header.tcp_header.error_success)
{
// here decoding error can be catched
return;
}
if (this.sniff_mode)
{
if (this.b_check_port)
{
// if port must be checked, check it
if (this.destination_port != this.spy_port)
{
if (!this.sniff_outgoing_packets)
{
return;// packet is not satisfying condition
}
// else check outgoing condition
if (this.source_port != this.spy_port)
{
return;
}
}
}
}
// send data arrival event
if (this.event_Data_Arrival != null)
{
this.event_Data_Arrival(this, new EventArgs_ipv4header_ReceiveData(sender, e.buffer));
}
}
protected void socket_data_arrival(easy_socket.ip_header.ipv4_header sender, easy_socket.ip_header.EventArgs_FullPacket e)
{
// get only icmp message
if (sender.protocol != easy_socket.ip_header.ipv4_header.protocol_icmp)
{
return;
}
icmp_client ret;
switch (sender.data[0])// switch type
{
case icmp.EchoReply:
ret = new icmp_echo_reply();
if (event_icmp_echo_reply_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_echo_reply_Data_Arrival((icmp_echo_reply)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.DestinationUnreachable:
ret = new icmp_destination_unreachable();
if (event_icmp_destination_unreachable_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_destination_unreachable_Data_Arrival((icmp_destination_unreachable)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.SourceQuench:
ret = new icmp_source_quench();
if (event_icmp_source_quench_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_source_quench_Data_Arrival((icmp_source_quench)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.Redirect:
ret = new icmp_redirect();
if (event_icmp_redirect_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_redirect_Data_Arrival((icmp_redirect)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.Echo:
ret = new icmp_echo();
if (event_icmp_echo_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_echo_Data_Arrival((icmp_echo)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.TimeExceeded:
ret = new icmp_time_exceeded_message();
if (event_icmp_time_exceeded_message_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_time_exceeded_message_Data_Arrival((icmp_time_exceeded_message)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.ParameterProblem:
ret = new icmp_parameter_problem();
if (event_icmp_parameter_problem_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_parameter_problem_Data_Arrival((icmp_parameter_problem)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.Timestamp:
ret = new icmp_timestamp();
if (event_icmp_timestamp_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_timestamp_Data_Arrival((icmp_timestamp)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.TimestampReply:
ret = new icmp_timestamp_reply();
if (event_icmp_timestamp_reply_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_timestamp_reply_Data_Arrival((icmp_timestamp_reply)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.InformationRequest:
ret = new icmp_information_request();
if (event_icmp_information_request_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_information_request_Data_Arrival((icmp_information_request)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
case icmp.InformationReply:
ret = new icmp_information_reply();
if (event_icmp_information_reply_Data_Arrival != null)
{
if (ret.decode(sender.data) == icmp.error_success)
{
event_icmp_information_reply_Data_Arrival((icmp_information_reply)ret, new EventArgs_ipv4header_ReceiveData(sender));
}
}
break;
default:
break;
}
}
