I am trying to ping my gateway, but lwip error appear: * Ping timeout * lwip_sendto: invalid address https://github.com/espressif/esp-idf/issues/11792 Some suggestion ? Thank's.Baldhead Posts: 464 Joined: Sun Mar 31, 2019 5:16 am Re...
udp_hdr *udphdr; /* UDP首部 */ err_t err; struct pbuf *q; /* 组装好的UDP报文,用于推到发送缓冲区 */ u8_t ip_proto; /* IP协议 */ u8_t ttl; /* TTL */ LWIP_ASSERT_CORE_LOCKED(); /* 内核锁内 */ /* 校验必要参数 */ LWIP_ERROR("udp_sendto_if_src: invalid pcb", pcb...
Patch9063: 0064-fix-udp-send-recv-in-multiple-queue.patch Patch9064: 0065-fix-udp-recvmbox-size-not-set.patch Patch9065: 0066-adapt-to-dpdk-19.11-and-dpdk-21.11.patch Patch9066: 0067-fix-null-pointer-when-all-zero-address-listen.patch Patch9067: 0068-enable-UDP-CKSUM-in-lwip.patch...
例如:udp_send()将pbuf发送到udp_pcb中记录的目的地址。其实它调用了udp_sendto(),而udp_sendto()中由目的ip和源ip地址,先确定使用的网络接口netif,然后调用udp_sendto_if();在udp_sendto_if()中确定了真正的src_ip(源ip地址)并调用udp_sendto_if_src(); 所以最终boss是函数udp_sendto_if_src();,...
err_t udp_send (struct udp_pcb *pcb, struct pbuf *p); void udp_input (struct pbuf *p, struct netif *inp); 1. 2. 3. 二,udp数据输出 代码提供了多个udp输出的函数,这些函数各自实现一部分功能,最后都要调用udp_sendto_if_src()函数把数据交给ip层。
17.1.6. 发送数据udp_send()与udp_sendto() UDP发送数据也是依赖IP层,在用户使用发送数据的时候,应该为数据开辟一个pbuf用于存储数据,并且pbuf中为UDP、IP、以太网首部预留足够的空间,然后用户调用udp_send()或者udp_sendto()函数将pbuf作为参数传递进去,在发送数据的时候,UDP协议会将UDP首部相关的内容进行填充,...
netconn_sendto() 函数用于向通过 netconn 结构体表示的网络连接发送数据到指定的目标地址 发送数据:netconn_sendto() 函数将应用程序提供的数据发送到指定的目标地址。应用程序可以通过将数据写入 netconn 结构体的发送缓冲区来准备要发送的数据。 目标地址指定:与 netconn_send() 函数不同的是,netconn_sendto(...
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This implies that PBUF_RAM/PBUF_POOL pbufs passed to raw-API send functions must *not* be reused by the application unless their ref-count is 1. 这意味着传递给原始 API 发送函数的 pbufs 不能被应用程序重复使用,除非他们的 ref-count 为 1. For no-copy pbufs (PBUF_ROM/PBUF_REF), data...