Windows Sockets Vuser Functions (LRS) > Socket Types

Socket Types

Type
Explanation
TCP
Similar to the WinSock SOCK_STREAM type. Provides sequenced, reliable, two-way, (full-duplex) connection-based byte streams with an out-of-band data transmission mechanism. Uses TCP for the Internet address family.
UDP
Similar to the WinSock SOCK_DGRAM type. Supports datagrams, which are connectionless, unreliable buffers of a fixed (typically small) maximum length. Uses UDP for the Internet address family.

To establish a TCP connection, the following steps are implemented:

Operation
WinSock
VuGen function
Client/Server
Open socket
socket
client and server
Name socket
bind
client (optional) and server
Prepare to associate with another socket
listen
server
Initiate association
connect
client
Complete association
accept
server
Receive/Send
recv/send
client and server

To establish a UDP connection, the following steps are implemented:

Operation
WinSock
VuGen function
Client/Server
Open socket
socket
client and server
Name socket
bind
client and server
Associate Sockets: Receive/Send
recvfrom /sendto
client and server