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add LINGER to menuconfig

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xueyunfei
2020-05-14 15:18:39 +08:00
parent 8688bd0593
commit 15916dfbec
1 changed files with 8 additions and 5 deletions
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13
components/lwip/Kconfig
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@@ -68,11 +68,14 @@ menu "LWIP"
default n default n
help help
Enabling this option allows SO_LINGER processing. Enabling this option allows SO_LINGER processing.
When close socket, the TCP connection will be immediately disconnected. l_onoff = 1,l_linger can set the timeout.
The unsent data in the send buffer will be discarded and an RST message
will be sent to the other party. It is worth noting that because of this way, If l_linger=0, When a connection is closed, TCP will terminate the connection.
the abnormal handshake in 4 ends the TCP connection, the TCP connection will This means that TCP will discard any data packets stored in the socket send buffer
not enter the 'TIME_WAIT' state. and send an RST to the peer.
If l_linger!=0,Then closesocket() calls to block the process until
the remaining data packets has been sent or timed out.
config LWIP_SO_REUSE config LWIP_SO_REUSE
bool "Enable SO_REUSEADDR option" bool "Enable SO_REUSEADDR option"