var server = net.createServer(function(connection) { console.log( client connected ); connection.on( end , function() { console.log( ); }); connection.write( Hello World! r n ); connection.pipe(connection); }); s...
according to the data queried on the Internet, any element in the TCP quad belongs to a different connection. then the assumption that the same client connects to the unreachable ports of different servers is true. Open port 8081 on the server, and try...
has tried basically includes most of the answers ...
client initiates tcp connection con1:Aip: Aport- > Bip:Bport, does not have a problem, do not close the connection, initiate tcp connection con2:Aip:Aport- > Cip:Bport, will address already in use, according to the quad, the two connections are not the ...
A http packet is very large and will be segmented in the tcp layer, that is, it will be divided into multiple tcp packages. If one of the tcp packets is lost and the retransmission fails, will the application layer read the http request? ...
https: zhuanlan.zhihu.com p . says: if the client is in the network of NAT (multiple clients, the network environment of the same IP egress), if the server is configured with net.ipv4.tcp_tw_recycle=1, only one client can successfully connect with i...
15:39:01.066209 IP client-ip > server-ip: Flags [S], seq 2676220664, win 65535, options [mss 1460,nop,nop,sackOK,nop,wscale 13], length 0 15:39:01.066247 IP server-ip > client-ip: Flags [S.], seq 3077872679, ack 2676220665, win 29200, options [mss...
such as 192.168.0.1 br 1234 and < 192.168.1.1 Note: 192.168.0.1 is the IP address of the network device eth0 192.168.1.1 is the IP address of the network device eth1 ...
first of all, to be clear, the client (the party that initiates the request) and the server (there is a service listening on port 8080, for example). OK, because of the definition of tcp connection quad , the requesting party needs to constantly consu...
this is the client of the instance from socket import * HOST= localhost PORT=10001 BUFFER=1024 ADDRESS=(HOST,PORT) clientSocet=socket(AF_INET,SOCK_STREAM) clientSocet.connect(ADDRESS) while True: data=input( > ) if not data: b...
The client marks the bit flags to send syn = 1, the server replies ack = 1 and syn = 1 after receiving the reply, and the client sends ack = 1 to the server to complete the three-way handshake after receiving the reply. then send the http request ack...
how does the PHP server call the returned data after the normal communication of the TCP persistent connection is successful? I have a car networking project, and now I can communicate with each car normally through gatwaywork. But now you can t just...
there are many analyses on the Internet about the emergence of a large number of close_wait on the server, which may be caused by the fact that the httpclient is not closed, but this kind of blog post usually only says four waves, and then takes it for g...
sliding window follows sliding window protocol congested window CWND is the window size of the sender, and follows AIDM (additive window addition, multiplicative window reduction) so what s the difference between the two windows? my understanding is ...
Hello, everyone. I d like to ask about the time waiting error of the TCP protocol. TCPIP description: when the FIN exchange is completed, the next serial number of the client is K, and the next serial number of the server is L. the recently arrived me...
I would like to ask you suppose that the TCP traffic window is 3, and now you want to send 4, 5, 6, 3 packets, so suppose you received 5 or 6 ACK first, then what to do next time when you receive the ACK, stop sending it, and move the window when you re...
topic description Restsharp.dll is used under the IIS site to call the remote interface through the HTTP protocol, and it is often found that the call fails. System.Net returns a TCP error, code 10060. by installing the Wireshark grab package, it is...
Why did the request lose the packet, and how to verify whether the packet was lost? ...
bind to socket on the computer to establish a tcp connection with the mobile phone, and after a period of time, the link suddenly hangs up. Wireshark sees that the computer side (10.86.34.145) has been sending repeated ack,. I would like to ask what the...
< H2 > I know the process and basis of the three-way handshake. You don t have to explain the basic concepts to me < H2 > < hr > the question is why the second handshake cannot be done 1. The information sent from the client to the server is delaye...