Espressif ESP32-S2 User Manual

Chapter 2. API Reference
• 8
TCP Contains:
• CONFIG_LWIP_TCP_WND_DEFAULT
• CONFIG_LWIP_TCP_SND_BUF_DEFAULT
• CONFIG_LWIP_TCP_RECVMBOX_SIZE
• CONFIG_LWIP_TCP_RTO_TIME
• CONFIG_LWIP_TCP_KEEP_CONNECTION_WHEN_IP_CHANGES
• CONFIG_LWIP_MAX_ACTIVE_TCP
• CONFIG_LWIP_MAX_LISTENING_TCP
• CONFIG_LWIP_TCP_MAXRTX
• CONFIG_LWIP_TCP_SYNMAXRTX
• CONFIG_LWIP_TCP_MSL
• CONFIG_LWIP_TCP_MSS
• CONFIG_LWIP_TCP_OVERSIZE
• CONFIG_LWIP_TCP_QUEUE_OOSEQ
• CONFIG_LWIP_TCP_SACK_OUT
• CONFIG_LWIP_WND_SCALE
• CONFIG_LWIP_TCP_HIGH_SPEED_RETRANSMISSION
• CONFIG_LWIP_TCP_TMR_INTERVAL
CONFIG_LWIP_MAX_ACTIVE_TCP
Maximum active TCP Connections
Found in: Component config > LWIP > TCP
The maximum number of simultaneously active TCP connections. The practical maximum limit is
determined by available heap memory at runtime.
Changing this value by itself does not substantially change the memory usage of LWIP, except for pre-
venting new TCP connections after the limit is reached.
Range:
• from 1 to 1024
Default value:
• 16
CONFIG_LWIP_MAX_LISTENING_TCP
Maximum listening TCP Connections
Found in: Component config > LWIP > TCP
The maximum number of simultaneously listening TCP connections. The practical maximum limit is
determined by available heap memory at runtime.
Changing this value by itself does not substantially change the memory usage of LWIP, except for pre-
venting new listening TCP connections after the limit is reached.
Range:
• from 1 to 1024
Default value:
• 16
CONFIG_LWIP_TCP_HIGH_SPEED_RETRANSMISSION
TCP high speed retransmissions
Found in: Component config > LWIP > TCP
Espressif Systems 1169
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Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English