因为默认开启了nagle算法就是在合并较短的数据帧，在tcp_write前(或者其他地方）加上tcp_nagle_disable(...
tcp_nagle_disable(c_pcb); if (tcp_sndbuf(c_pcb) > strlen(msg)) { err = tcp_write(c_pcb, msg, strlen(msg), TCP_WRITE_FLAG_COPY); if (err != ERR_OK) xil_printf("tcp_server: Error on tcp_write: %d\r\n", err); err = tcp_output(c_pcb); if (err != ERR_OK) xil_pr...
*/ #endif /* TCP_TMR_INTERVAL */ I use STM32H725IGK6 + PHY ADIN1100. Code generated by CUBEMX. No RTOS, with ETH and with LWIP. Another time improvement was to disable nagle algorithm (to force sending short messages): #define tcp_nagle_disable(pcb) tcp_set_flags(pcb, TF_NODELAY...
*/tcpwnd_size_trcv_ann_wnd;/* 窗口通告值大小:即是告诉发送方,我们这边的接口窗口的大小 */u32_trcv_ann_right_edge;/* 窗口通告值右边界 */#ifLWIP_TCP_SACK_OUT/* SACK ranges to include in ACK packets (entry is invalid if left==right) */structtcp_sack_rangercv_sacks[LWIP_TCP_MAX_SACK...
正题,嵌入式产品连入 Internet 网,这个 MS 是个愈演愈烈的趋势.想想,你可以足不 出户对你的产品进行配置,并获取你关心的数据信息,多好.这也许也是物联网世界最基本 的雏形.当然,你的产品要有如此功能,那可不容易,至少它得有个目前很 Fashion 的 TCP/IP 协议栈.LWIP 是一套用于嵌入式系统的开放源代码 TCP...
这个结构体就是用来描述和记录一个TCP链接的属性的。就和你的档案一样,你想要的某个TCP链接的信息可以在这个结构体 中找到。 2019-7-22 08:21:19 评论 举报 乐骞添 提交评论 答案对人有帮助,有参考价值 0 pcb是protocol control block的缩写,协议控制块 也就是这个结构体包含tcp层需要处理或者配置...
#define TF_RXCLOSED 0x10U /* 关闭接收 rx closed by tcp_shutdown */ #define TF_FIN 0x20U /* 本地主动请求关闭Connection was closed locally (FIN segment enqueued). */ #define TF_NODELAY 0x40U /* Disable Nagle algorithm 禁止Nagle算法*/ ...
16 #define TF_RXCLOSED 0x10U /* rx closed by tcp_shutdown */ 17 #define TF_FIN 0x20U /* Connection was closed locally (FIN segment enqueued). */ 18 #define TF_NODELAY 0x40U /* Disable Nagle algorithm */ 19 #define TF_NAGLEMEMERR 0x80U /* nagle enabled, memerr, try to output...
TF_RXCLOSED 0x10U /* rx closed by tcp_shutdown */ 17 #define TF_FIN 0x20U /* Connection was closed locally (FIN segment enqueued). */ 18 #define TF_NODELAY 0x40U /* Disable Nagle algorithm */ 19 #define TF_NAGLEMEMERR 0x80U /* nagle enabled, memerr, try to output to pr...
setNoDelay(flag): Sets or clears the TCP_NODELAY flag in order to disable or enable Nagle's algorithm, respectively. This must be changed for each new connection. Returns true if connected and the option was set, and false otherwise. isNoDelay(): Returns whether the TCP_NODELAY flag is ...