SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R09

18Internet protocol transport layer
Page 183 of 307
Type Syntax Response Example
OK
18.4.3î™–î™–î™–î™–Defined values
Parameter Type Description
<socket> Number Socket identifier defined by the AT+USOCR command. The range goes from 0 to 6.
<ssl_tls_status> Number
• 0 (default value): disable the SSL/TLS on the socket.
• 1: enable the SSL/TLS on the socket; a USECMNG profile can be specified with the
<usecmng_profile_id> parameter.
<usecmng_profile_
id>
Number Defines the USECMNG profile which specifies the SSL/TLS properties to be used
for the SSL/TLS connection. The range goes from 0 to 4. If no profile is set a default
USECMNG profile is used (see USECMNG section).
18.5î™–î™–î™–î™–Set socket option +USOSO
+USOSO
SARA-R404M SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full No No No - TCP/UDP/IP
Error +CME
Error
18.5.1î™–î™–î™–î™–Description
Sets the specified standard option (type of service, local address re-use, linger time, time-to-live, etc.) for the
specified socket, like the BSD setsockopt routine.
Issue a set command to set each parameter.
18.5.2î™–î™–î™–î™–Syntax
Type Syntax Response Example
Set AT+USOSO=<socket>,<level>,<opt_
name>,<opt_val>[,<opt_val2>]
OK AT+USOSO=2,6,1,1
OK
Test AT+USOSO=? +USOSO: (list of supported
<socket>s),(list of supported
<level>s)
OK
+USOSO: (0-6),(0,6,65535)
OK
18.5.3î™–î™–î™–î™–Defined values
Parameter Type Description
<socket> Number Socket identifier. The range goes from 0 to 6
<level> Number
• 0: IP protocol
<opt_name> for IP protocol level may be:
o 1: type of service (TOS)
<opt_val>: 8 bitmask that represents the flags of IP TOS. The range is 0-255
(the default value is 0). For more information see the RFC 791 [27]
o 2: time-to-live (TTL)
<opt_val>: unsigned 8 bit value representing the TTL. The range is 0-255 (the
default value is 255)
• 6: TCP protocol
<opt_name> for TCP protocol level may be:
o 1: no delay option; do not delay send to coalesce packets;
<opt_val>: numeric parameter, it enables/disables the "no delay" option
- 0 (default value): disabled
- 1: enabled
o 2: keepidle option: send keepidle probes when it is idle for <opt_val> milliseconds
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