I use sockets.c api. When I create the 17th concurrent connection,The server program block at function lwip_read();
Yes,I enable the debug and print out the states of memory. But no err found.
> I increase the pcb num,but it does not work. [NB. I've replied to lwip-users rather than lwip-devel - it is more appropriate for this to be discussed there] Can you find where it is blocking in lwIP? This might give you a clue about which resource there is insufficient of to satisfy the 17th connection. I'm surprised that there are no errors output in this case.
Also, which lwIP API are you using?
Kieran
/* * Copyright (c) 2001, 2002 Swedish Institute of Computer Science. * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * This file is part of the lwIP TCP/IP stack. * * Author: Adam Dunkels <[EMAIL PROTECTED]> * */ #ifndef __LWIPOPTS_H__ #define __LWIPOPTS_H__ #if 1 #define LWIP_DEBUG #define DBG_MIN_LEVEL 0 #define DBG_TYPES_ON (DBG_ON | DBG_TRACE | DBG_STATE | DBG_FRESH | DBG_HALT) #if 0 #define TCP_DEBUG DBG_OFF #define TCP_QLEN_DEBUG DBG_OFF #define TCP_OUTPUT_DEBUG DBG_ON #define TCP_RTO_DEBUG DBG_ON #define TCP_FR_DEBUG DBG_ON #define TCP_CWND_DEBUG DBG_ON #define TCP_WND_DEBUG DBG_ON #define TCP_RST_DEBUG DBG_ON #endif #if 1 #define LINK_STATS 1 #define IP_STATS 1 #define IPFRAG_STATS 1 #define ICMP_STATS 1 #define UDP_STATS 1 #define TCP_STATS 1 #define MEM_STATS 1 #define MEMP_STATS 1 #define PBUF_STATS 1 #define SYS_STATS 1 #define RAW_STATS 1 #define LWIP_STATS_DISPLAY 1 #endif #define MEM_DEBUG DBG_ON #define MEMP_DEBUG DBG_ON #if 0 #define TCP_INPUT_DEBUG DBG_ON #define RAW_DEBUG DBG_OFF #define PBUF_DEBUG DBG_OFF #endif #endif //efine SO_REUSE 1 #define NO_SYS 0 #define LWIP_CALLBACK_API 1 #define LWIP_DHCP 0 #define SYS_LIGHTWEIGHT_PROT 1 /* #define TCP_TMR_INTERVAL 250 */ #define TCP_TMR_INTERVAL 250 /* ---------- Memory options ---------- */ /* MEM_ALIGNMENT: should be set to the alignment of the CPU for which lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2 byte alignment -> define MEM_ALIGNMENT to 2. */ /* tried 4 byte alignment, but that seems to cause problems with pbuf * routines */ #define MEM_ALIGNMENT 4 /* MEM_SIZE: the size of the heap memory. If the application will send a lot of data that needs to be copied, this should be set high. */ #define MEM_SIZE 1024*110 /* The following four are used only with the sequential API and can be set to 0 if the application only will use the raw API. */ /* MEMP_NUM_NETBUF: the number of struct netbufs. */ #define MEMP_NUM_NETBUF 2*10 /* MEMP_NUM_NETCONN: the number of struct netconns. */ #define MEMP_NUM_NETCONN 4+14//¿ØÖÆÔÚ15¸öÁ¬½ÓÒÔÄÚ #define MEMP_NUM_TCP_PCB 5*10 /* MEMP_NUM_APIMSG: the number of struct api_msg, used for communication between the TCP/IP stack and the sequential programs. */ #define MEMP_NUM_API_MSG 16 /* MEMP_NUM_TCPIPMSG: the number of struct tcpip_msg, which is used for sequential API communication and incoming packets. Used in src/api/tcpip.c. */ #define MEMP_NUM_TCPIP_MSG 16*10 #define MEMP_NUM_SYS_TIMEOUT 3+2 #define PBUF_POOL_SIZE 16*32 #define PBUF_POOL_BUFSIZE 128 #define PBUF_LINK_HLEN 14 #define TCP_MSS 1460 /* TCP_SND_BUF should be less than or equal to MEMP_NUM_TCP_SEG * * TCP_MSS otherwise the system will not be able to allocate enough * tcp_segs to transmit all the data and will return ERR_MEM when * attempting to transmit large amounts of data. You want to guarantee * that there are more tcp_segs than there is memory. Each segment * is equal to TCP_MSS. */ #define MEMP_NUM_TCP_SEG 255 #define TCP_WND 2048 #define TCP_SND_BUF (MEMP_NUM_TCP_SEG-1) * TCP_MSS #define LWIP_MAX_QS 20*10 /* Max. LwIP queues */ #endif /* __LWIPOPTS_H__ */
_______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
