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Chapter 17 – TCP APP AT Commands
TCP/IP Service Option Handling +WIPOPT
Description:
The +WIPOPT command is used to read and/or configure different parameters on sockets.
Syntax:
Command syntax: AT+WIPOPT=<protocol>,<idx>,<action>,<optnum>[,<optval>]
Command
Possible Responses
AT+WIPOPT=2,1,1,0
+WIPOPT: 2,0,56228
Note: Display local port number for connection on TCP
OK
socket 1
Note: Display is +WIPOPT:
<protocol>,<optnum>,<result>
AT+WIPOPT=2,1,1,2
+WIPOPT: 2,2,"192.168.13.34"
Note: Display peer IP address of the connection on TCP
OK
socket 1
AT+WIPOPT=1,2,1,6
+WIPOPT: 1,6,23
Note: Display bytes available to be read on UDP socket 2
OK
AT+WIPOPT=2,2,2,8,32
OK
Note: Set Time to Live for TCP socket 2 to value of 32
AT+WIPOPT?
ERROR
Values:
<protocol>
1: UDP
2: TCP client
3: TCP server
<idx>
1-8
Socket or session identifier
<action>
1
Read (<optval> not allowed)
2
Write (<optval> required)
<optnum> Option to read or write (see Options and Values listed next)
<optval> Value of option to write (see Options and Values listed next)
Options and Values:
Optnum
0
1
2
3
Value
Format
0-65535
0-65535
String
0-1
4
536-36864
5
536-65535
6
0-65535
7
0-1
Description
UDP
Local port number of the socket
Port of the peer socket
Address of the peer socket
Specifies whether the socket is bound to a peer
socket or not (see 18.11.5)
default: 1
Size in bytes of the local transmit buffer.
default: 10240
Size in bytes of the local receive buffer.
default: 16384
Number of bytes that can currently be read on
the socket
When set to TRUE, TCP packets are sent
immediately, even if the buffer is not full
enough.
When set to FALSE, the packets will be sent
either,
a) by combining several small packets into a
bigger packet
b) when the data is ready to send and the
stack is idle.
default: 0
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C)
R
R
R
R
TCP
Client
R
R
R
R
TCP
Server
R
-
-
RW
RW
-
RW
RW
R
R
-
-
RW
RW
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