Ublox SARA-R4 Series User Manual (English)

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SARA-R4/N4 series-AT Commands Manual

UBX-17003787 - R09



18Internet protocol transport layer

Page 194 of 307

18.14Set Listening Socket +USOLI

+USOLI

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 < 1 s (except

URC)

TCP/UDP/IP

Error +CME

Error

18.14.1Description

Sets the specified socket in listening mode on the specified port of service, waiting for incoming connections

(TCP) or data (UDP):

• For TCP sockets, incoming connections will be automatically accepted and notified via the

URC +UUSOLI: <socket>,<ip_address>,<port>,<listening_socket>,<local_ip_address>,<listening_port>,

carrying the connected socket identifier, the remote IP address and port.

• For UDP sockets, incoming data will be notified via URC +UUSORF: <listening_socket>,<length>. To know

from which remote IP address and port the data is coming from, use the AT+USORF command.

18.14.2Syntax

Type Syntax Response Example

TCP sockets

AT+USOLI=2,1200

+UUSOLI: 3,"151.63.16.7",1403,2,

"82.89.67.164",1200

Set AT+USOLI=<socket>,<port> OK

UDP sockets

AT+USOLI=0,1182

+UUSORF: 0,1024

Test AT+USOLI=? +USOLI: (list of supported

<socket>s),(list of supported

<port>s)

+USOLI: (0-6),(1-65535)

URC

(TCP)

+UUSOLI: <socket>,<ip_address>,

<port>,<listening_socket>,<local_

ip_address>,<listening_port>

+UUSOLI: 3,"151.63.16.7",1403,0,

"82.89.67.164",200

URC

(UDP)

+UUSORF: <listening_socket>,

+UUSORF: 1,967

18.14.3Defined values

Parameter Type Description

<socket> Number Socket identifier. The range goes from 0 to 6

<port> Number Port of service, range 1-65535. Port numbers below 1024 are not recommended since

they are usually reserved

<ip_address> String Remote host IP address (only in URC +UUSOLI). For IP address format reference see

the IP addressing.

<listening_socket> Number Socket identifier specified within the AT+USOLI command, indicates on which

listening socket the connection has been accepted (only in +UUSOLI URC)

<local_ip_address> String TE IP address (only in +UUSOLI URC). For IP address format reference see the IP

addressing.

<listening_port> Number Listening port that has accepted the connection. This port is specified within the AT

+USOLI command (only in +UUSOLI URC)

<length> Number Data length received on the UDP listening socket (only in +UUSORF unsolicited

indication). In order to know the sender IP address and port, use the AT+USORF

command.

Other manuals for Ublox SARA-R4 Series

System Integration Manual157 pages

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Ublox SARA-R4 Series Specifications

General

Operating Temperature	-40°C to +85°C
Category	Cellular Module
Technology	LTE Cat M1, LTE Cat NB1
Frequency Bands	B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B25, B26, B28, B39
Interfaces	UART, USB, I2C, GPIO
Protocols	TCP/IP, UDP, HTTP, HTTPS, MQTT, LWM2M
Security	TLS/SSL, DTLS, Secure Boot
Certifications	GCF, PTCRB, CE, FCC, IC