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Short and simple differences between Tcp and Udp protocol: 1) Tcp - Transmission control protocol and Udp - User datagram protocol. 2) Tcp is reliable protocol, Where as Udp is a unreliable protocol. 3) Tcp is a stream oriented, where as Udp is a message oriented protocol. 4) Tcp is a slower than Udp.
The main difference is that TCP sockets are connection-based. You can't send or receive anything until you are connected to another TCP socket on the remote machine. Once connected, a TCP socket can only send and receive to/from the remote machine. This means that you'll need one TCP socket for each client in your application.
The UDP port number can differentiate between multiple services on the same host, using the same L3 identification. Using IP only it wouldn't be possible to host multiple services on the same station and easily differentiate between them.
What is the difference between making a connection with TCP sockets (sock_stream) and UDP sockets (datagram). Up to now, I think like we can create a connection using connect function only for TCP sockets. But, it is possible for making a connection with UDP sockets. Up to now I didn't know about making a connection with UDP sockets.
P.R.'s answer is mostly correct, but incomplete. TCP is a reliable, connected stream protocol. Its view of data is that of a bidirectional stream of bytes between hosts: whatever bytes you send will arrive at the other end in the same order, at least as far as the application is concerned (the OS will rearrange packets if needed).
WebSocket is basically an application protocol (with reference to the ISO/OSI network stack), message-oriented, which makes use of TCP as transport layer. The idea behind the WebSocket protocol consists of reusing the established TCP connection between a Client and Server.
Because both TCP and UDP run over the same network, many businesses are finding that a recent increase in UDP traffic from these real-time applications is hindering the performance of applications using TCP, such as point of sale, accounting, and database systems.
Remember, independently of their respective socket identifier formats, both TCP and UDP datagrams identify the port number of the sender; i.e., even a connectionless protocol as UDP has to identify the sender of the transmission as Kurose and Ross explain in their pretty good book “Computer Networking - a Top Down Approach”:
Which protocol performs better (in terms of throughput) - UDP or TCP - really depends on the network characteristics and the network traffic. Robert S. Barnes, for example, points out a scenario where TCP performs better (small-sized writes). Now, consider a scenario in which the network is congested and has both TCP and UDP traffic.
But i noticed that this also uses a tcp/ip or udp connection. so what the difference from using RPC to just a basic tcp/ip or udp connection to connect the client and server? the code is completely different for example in RCP to use tcp: reinterpret_cast<unsigned char*>("ncacn_ip_tcp"), // Use TCP/IP protocol. reinterpret_cast<unsigned char ...