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Using Socket Services with Socket Service Request Switches Section 6-2
Note These response codes will be returned only on large, multilevel networks.
TCP Socket Close Request
6-2-3 Socket Service Request Switches
Socket Service Request Switches are manipulated to request socket ser-
vices. These bits are called Socket Service Request Switches, and are turned
ON in the CPU Unit to request socket services through the Ethernet Unit.
The Socket Service Request Switches are allocated in the CPU Bus Unit Area
in the CPU Area starting at the word n+ 19. The value of n can be calculated
from the unit number as follows:
n = 1500 + (25 x unit number)
110C Request Switch turned ON during other processing.
220F Specified socket is already processing a send request.
2210 The specified socket is not open.
2211 Unit is busy; cannot execute.
2607 Specified Socket Service Parameter Area is already being used for
another socket.
0020 Connection with remote socket broken during send (EPIPE).
003E Internal buffer cannot be obtained due to high reception traffic
(ENOBUFS).
0042
(See note.)
The remote IP address is a broadcast address and the number of
bytes to send is greater than 1,472 bytes (EMSGSIZE).
0044
(See note.)
ICMP data received (ENOPROTOOPT).
0045
(See note.)
Error in communications with remote node (ECONNABORTED).
004A
(See note.)
Error in communications with remote node (ECONNREFUSED)
004B
(See note.)
Error in communications with remote node (ECONNREFUSED)
004E
(See note.)
Remote IP address parameter error (ENETUNREACH).
004F
(See note.)
ICMP data received (EHOSTDOWN).
0051
(See note.)
Remote IP address parameter error (EHOSTUNREACH).
0053
(See note.)
Error in communications with remote node (ETIMEDOUT).
0081 The specified socket was closed during send processing.
Response
code
Meaning
0000 Normal end
2210 The specified socket is not open.
2211 Unit is busy; cannot execute.
2607 Specified Socket Service Parameter Area is already being used for
another socket.
0302 CPU Unit error; cannot execute.
Response
code
Meaning