tcp_zero_window_probe() is only used within LwIP.
 
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tcp_zero_window_probe() function

Send persist timer zero-window probes to keep a connection active when a window update is lost. Called by tcp_slowtmr()

Syntax

err_t tcp_zero_window_probe(struct tcp_pcb *pcb);
Implemented in tcp_out.c:2115

Arguments

pcb

the tcp_pcb for which to send a zero-window probe packet

References

LocationReferrerText
tcp_out.c:2116
tcp_zero_window_probe(struct tcp_pcb *pcb)
tcp_priv.h:475
err_t tcp_zero_window_probe(struct tcp_pcb *pcb);
tcp.c:1249tcp_slowtmr()
if (tcp_zero_window_probe(pcb) != ERR_OK) {

Call Tree

Functions calling tcp_zero_window_probe()
Functions called by tcp_zero_window_probe()
all items filtered out
tcp_zero_window_probe()
Data read by tcp_zero_window_probe()
Data written by tcp_zero_window_probe()
tcp_zero_window_probe()::d
tcp_zero_window_probe()::err
tcp_zero_window_probe()::p
tcp_zero_window_probe()::tcphdr
tcp_zero_window_probe()::seg
tcp_zero_window_probe()::len
tcp_zero_window_probe()::is_fin
tcp_zero_window_probe()::snd_nxt
tcp_zero_window_probe()::optlen
all items filtered out
tcp_zero_window_probe()
tcp_zero_window_probe()::err
tcp_zero_window_probe()::p
tcp_zero_window_probe()::tcphdr
tcp_zero_window_probe()::seg
tcp_zero_window_probe()::len
tcp_zero_window_probe()::is_fin
tcp_zero_window_probe()::snd_nxt
all items filtered out
Type of tcp_zero_window_probe()
tcp_zero_window_probe()