TCPSpeedTest - I have a problem getting this to work. Server onl…

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Jesper Taxbøl / Mbed 2 deprecated TCPSpeedTest

I have a problem getting this to work. Server only recieves half of the data being sent. Whats wrong

lwip/core/ipv4/ip_addr.c@0:66300c77c6e9, 2011-03-29 (annotated)

Committer:: tax
Date:: Tue Mar 29 13:20:15 2011 +0000
Revision:: 0:66300c77c6e9

Who changed what in which revision?

User	Revision	Line number	New contents of line
tax	0:66300c77c6e9	1	/**
tax	0:66300c77c6e9	2	* @file
tax	0:66300c77c6e9	3	* This is the IPv4 address tools implementation.
tax	0:66300c77c6e9	4	*
tax	0:66300c77c6e9	5	*/
tax	0:66300c77c6e9	6
tax	0:66300c77c6e9	7	/*
tax	0:66300c77c6e9	8	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
tax	0:66300c77c6e9	9	* All rights reserved.
tax	0:66300c77c6e9	10	*
tax	0:66300c77c6e9	11	* Redistribution and use in source and binary forms, with or without modification,
tax	0:66300c77c6e9	12	* are permitted provided that the following conditions are met:
tax	0:66300c77c6e9	13	*
tax	0:66300c77c6e9	14	* 1. Redistributions of source code must retain the above copyright notice,
tax	0:66300c77c6e9	15	* this list of conditions and the following disclaimer.
tax	0:66300c77c6e9	16	* 2. Redistributions in binary form must reproduce the above copyright notice,
tax	0:66300c77c6e9	17	* this list of conditions and the following disclaimer in the documentation
tax	0:66300c77c6e9	18	* and/or other materials provided with the distribution.
tax	0:66300c77c6e9	19	* 3. The name of the author may not be used to endorse or promote products
tax	0:66300c77c6e9	20	* derived from this software without specific prior written permission.
tax	0:66300c77c6e9	21	*
tax	0:66300c77c6e9	22	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
tax	0:66300c77c6e9	23	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
tax	0:66300c77c6e9	24	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
tax	0:66300c77c6e9	25	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
tax	0:66300c77c6e9	26	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
tax	0:66300c77c6e9	27	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
tax	0:66300c77c6e9	28	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
tax	0:66300c77c6e9	29	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
tax	0:66300c77c6e9	30	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
tax	0:66300c77c6e9	31	* OF SUCH DAMAGE.
tax	0:66300c77c6e9	32	*
tax	0:66300c77c6e9	33	* This file is part of the lwIP TCP/IP stack.
tax	0:66300c77c6e9	34	*
tax	0:66300c77c6e9	35	* Author: Adam Dunkels <adam@sics.se>
tax	0:66300c77c6e9	36	*
tax	0:66300c77c6e9	37	*/
tax	0:66300c77c6e9	38
tax	0:66300c77c6e9	39	#include "lwip/opt.h"
tax	0:66300c77c6e9	40	#include "lwip/ip_addr.h"
tax	0:66300c77c6e9	41	#include "lwip/netif.h"
tax	0:66300c77c6e9	42
tax	0:66300c77c6e9	43	/* used by IP_ADDR_ANY and IP_ADDR_BROADCAST in ip_addr.h */
tax	0:66300c77c6e9	44	const ip_addr_t ip_addr_any = { IPADDR_ANY };
tax	0:66300c77c6e9	45	const ip_addr_t ip_addr_broadcast = { IPADDR_BROADCAST };
tax	0:66300c77c6e9	46
tax	0:66300c77c6e9	47	/**
tax	0:66300c77c6e9	48	* Determine if an address is a broadcast address on a network interface
tax	0:66300c77c6e9	49	*
tax	0:66300c77c6e9	50	* @param addr address to be checked
tax	0:66300c77c6e9	51	* @param netif the network interface against which the address is checked
tax	0:66300c77c6e9	52	* @return returns non-zero if the address is a broadcast address
tax	0:66300c77c6e9	53	*/
tax	0:66300c77c6e9	54	u8_t
tax	0:66300c77c6e9	55	ip4_addr_isbroadcast(u32_t addr, const struct netif *netif)
tax	0:66300c77c6e9	56	{
tax	0:66300c77c6e9	57	ip_addr_t ipaddr;
tax	0:66300c77c6e9	58	ip4_addr_set_u32(&ipaddr, addr);
tax	0:66300c77c6e9	59
tax	0:66300c77c6e9	60	/* all ones (broadcast) or all zeroes (old skool broadcast) */
tax	0:66300c77c6e9	61	if ((~addr == IPADDR_ANY) \|\|
tax	0:66300c77c6e9	62	(addr == IPADDR_ANY)) {
tax	0:66300c77c6e9	63	return 1;
tax	0:66300c77c6e9	64	/* no broadcast support on this network interface? */
tax	0:66300c77c6e9	65	} else if ((netif->flags & NETIF_FLAG_BROADCAST) == 0) {
tax	0:66300c77c6e9	66	/* the given address cannot be a broadcast address
tax	0:66300c77c6e9	67	* nor can we check against any broadcast addresses */
tax	0:66300c77c6e9	68	return 0;
tax	0:66300c77c6e9	69	/* address matches network interface address exactly? => no broadcast */
tax	0:66300c77c6e9	70	} else if (addr == ip4_addr_get_u32(&netif->ip_addr)) {
tax	0:66300c77c6e9	71	return 0;
tax	0:66300c77c6e9	72	/* on the same (sub) network... */
tax	0:66300c77c6e9	73	} else if (ip_addr_netcmp(&ipaddr, &(netif->ip_addr), &(netif->netmask))
tax	0:66300c77c6e9	74	/* ...and host identifier bits are all ones? =>... */
tax	0:66300c77c6e9	75	&& ((addr & ~ip4_addr_get_u32(&netif->netmask)) ==
tax	0:66300c77c6e9	76	(IPADDR_BROADCAST & ~ip4_addr_get_u32(&netif->netmask)))) {
tax	0:66300c77c6e9	77	/* => network broadcast address */
tax	0:66300c77c6e9	78	return 1;
tax	0:66300c77c6e9	79	} else {
tax	0:66300c77c6e9	80	return 0;
tax	0:66300c77c6e9	81	}
tax	0:66300c77c6e9	82	}
tax	0:66300c77c6e9	83
tax	0:66300c77c6e9	84	/** Checks if a netmask is valid (starting with ones, then only zeros)
tax	0:66300c77c6e9	85	*
tax	0:66300c77c6e9	86	* @param netmask the IPv4 netmask to check (in network byte order!)
tax	0:66300c77c6e9	87	* @return 1 if the netmask is valid, 0 if it is not
tax	0:66300c77c6e9	88	*/
tax	0:66300c77c6e9	89	u8_t
tax	0:66300c77c6e9	90	ip4_addr_netmask_valid(u32_t netmask)
tax	0:66300c77c6e9	91	{
tax	0:66300c77c6e9	92	u32_t mask;
tax	0:66300c77c6e9	93	u32_t nm_hostorder = lwip_htonl(netmask);
tax	0:66300c77c6e9	94
tax	0:66300c77c6e9	95	/* first, check for the first zero */
tax	0:66300c77c6e9	96	for (mask = 1U << 31 ; mask != 0; mask >>= 1) {
tax	0:66300c77c6e9	97	if ((nm_hostorder & mask) == 0) {
tax	0:66300c77c6e9	98	break;
tax	0:66300c77c6e9	99	}
tax	0:66300c77c6e9	100	}
tax	0:66300c77c6e9	101	/* then check that there is no one */
tax	0:66300c77c6e9	102	for (; mask != 0; mask >>= 1) {
tax	0:66300c77c6e9	103	if ((nm_hostorder & mask) != 0) {
tax	0:66300c77c6e9	104	/* there is a one after the first zero -> invalid */
tax	0:66300c77c6e9	105	return 0;
tax	0:66300c77c6e9	106	}
tax	0:66300c77c6e9	107	}
tax	0:66300c77c6e9	108	/* no one after the first zero -> valid */
tax	0:66300c77c6e9	109	return 1;
tax	0:66300c77c6e9	110	}
tax	0:66300c77c6e9	111
tax	0:66300c77c6e9	112	/* Here for now until needed in other places in lwIP */
tax	0:66300c77c6e9	113	#ifndef isprint
tax	0:66300c77c6e9	114	#define in_range(c, lo, up) ((u8_t)c >= lo && (u8_t)c <= up)
tax	0:66300c77c6e9	115	#define isprint(c) in_range(c, 0x20, 0x7f)
tax	0:66300c77c6e9	116	#define isdigit(c) in_range(c, '0', '9')
tax	0:66300c77c6e9	117	#define isxdigit(c) (isdigit(c) \|\| in_range(c, 'a', 'f') \|\| in_range(c, 'A', 'F'))
tax	0:66300c77c6e9	118	#define islower(c) in_range(c, 'a', 'z')
tax	0:66300c77c6e9	119	#define isspace(c) (c == ' ' \|\| c == '\f' \|\| c == '\n' \|\| c == '\r' \|\| c == '\t' \|\| c == '\v')
tax	0:66300c77c6e9	120	#endif
tax	0:66300c77c6e9	121
tax	0:66300c77c6e9	122	/**
tax	0:66300c77c6e9	123	* Ascii internet address interpretation routine.
tax	0:66300c77c6e9	124	* The value returned is in network order.
tax	0:66300c77c6e9	125	*
tax	0:66300c77c6e9	126	* @param cp IP address in ascii represenation (e.g. "127.0.0.1")
tax	0:66300c77c6e9	127	* @return ip address in network order
tax	0:66300c77c6e9	128	*/
tax	0:66300c77c6e9	129	u32_t
tax	0:66300c77c6e9	130	ipaddr_addr(const char *cp)
tax	0:66300c77c6e9	131	{
tax	0:66300c77c6e9	132	ip_addr_t val;
tax	0:66300c77c6e9	133
tax	0:66300c77c6e9	134	if (ipaddr_aton(cp, &val)) {
tax	0:66300c77c6e9	135	return ip4_addr_get_u32(&val);
tax	0:66300c77c6e9	136	}
tax	0:66300c77c6e9	137	return (IPADDR_NONE);
tax	0:66300c77c6e9	138	}
tax	0:66300c77c6e9	139
tax	0:66300c77c6e9	140	/**
tax	0:66300c77c6e9	141	* Check whether "cp" is a valid ascii representation
tax	0:66300c77c6e9	142	* of an Internet address and convert to a binary address.
tax	0:66300c77c6e9	143	* Returns 1 if the address is valid, 0 if not.
tax	0:66300c77c6e9	144	* This replaces inet_addr, the return value from which
tax	0:66300c77c6e9	145	* cannot distinguish between failure and a local broadcast address.
tax	0:66300c77c6e9	146	*
tax	0:66300c77c6e9	147	* @param cp IP address in ascii represenation (e.g. "127.0.0.1")
tax	0:66300c77c6e9	148	* @param addr pointer to which to save the ip address in network order
tax	0:66300c77c6e9	149	* @return 1 if cp could be converted to addr, 0 on failure
tax	0:66300c77c6e9	150	*/
tax	0:66300c77c6e9	151	int
tax	0:66300c77c6e9	152	ipaddr_aton(const char cp, ip_addr_t addr)
tax	0:66300c77c6e9	153	{
tax	0:66300c77c6e9	154	u32_t val;
tax	0:66300c77c6e9	155	u8_t base;
tax	0:66300c77c6e9	156	char c;
tax	0:66300c77c6e9	157	u32_t parts[4];
tax	0:66300c77c6e9	158	u32_t *pp = parts;
tax	0:66300c77c6e9	159
tax	0:66300c77c6e9	160	c = *cp;
tax	0:66300c77c6e9	161	for (;;) {
tax	0:66300c77c6e9	162	/*
tax	0:66300c77c6e9	163	* Collect number up to ``.''.
tax	0:66300c77c6e9	164	* Values are specified as for C:
tax	0:66300c77c6e9	165	* 0x=hex, 0=octal, 1-9=decimal.
tax	0:66300c77c6e9	166	*/
tax	0:66300c77c6e9	167	if (!isdigit(c))
tax	0:66300c77c6e9	168	return (0);
tax	0:66300c77c6e9	169	val = 0;
tax	0:66300c77c6e9	170	base = 10;
tax	0:66300c77c6e9	171	if (c == '0') {
tax	0:66300c77c6e9	172	c = *++cp;
tax	0:66300c77c6e9	173	if (c == 'x' \|\| c == 'X') {
tax	0:66300c77c6e9	174	base = 16;
tax	0:66300c77c6e9	175	c = *++cp;
tax	0:66300c77c6e9	176	} else
tax	0:66300c77c6e9	177	base = 8;
tax	0:66300c77c6e9	178	}
tax	0:66300c77c6e9	179	for (;;) {
tax	0:66300c77c6e9	180	if (isdigit(c)) {
tax	0:66300c77c6e9	181	val = (val * base) + (int)(c - '0');
tax	0:66300c77c6e9	182	c = *++cp;
tax	0:66300c77c6e9	183	} else if (base == 16 && isxdigit(c)) {
tax	0:66300c77c6e9	184	val = (val << 4) \| (int)(c + 10 - (islower(c) ? 'a' : 'A'));
tax	0:66300c77c6e9	185	c = *++cp;
tax	0:66300c77c6e9	186	} else
tax	0:66300c77c6e9	187	break;
tax	0:66300c77c6e9	188	}
tax	0:66300c77c6e9	189	if (c == '.') {
tax	0:66300c77c6e9	190	/*
tax	0:66300c77c6e9	191	* Internet format:
tax	0:66300c77c6e9	192	* a.b.c.d
tax	0:66300c77c6e9	193	* a.b.c (with c treated as 16 bits)
tax	0:66300c77c6e9	194	* a.b (with b treated as 24 bits)
tax	0:66300c77c6e9	195	*/
tax	0:66300c77c6e9	196	if (pp >= parts + 3) {
tax	0:66300c77c6e9	197	return (0);
tax	0:66300c77c6e9	198	}
tax	0:66300c77c6e9	199	*pp++ = val;
tax	0:66300c77c6e9	200	c = *++cp;
tax	0:66300c77c6e9	201	} else
tax	0:66300c77c6e9	202	break;
tax	0:66300c77c6e9	203	}
tax	0:66300c77c6e9	204	/*
tax	0:66300c77c6e9	205	* Check for trailing characters.
tax	0:66300c77c6e9	206	*/
tax	0:66300c77c6e9	207	if (c != '\0' && !isspace(c)) {
tax	0:66300c77c6e9	208	return (0);
tax	0:66300c77c6e9	209	}
tax	0:66300c77c6e9	210	/*
tax	0:66300c77c6e9	211	* Concoct the address according to
tax	0:66300c77c6e9	212	* the number of parts specified.
tax	0:66300c77c6e9	213	*/
tax	0:66300c77c6e9	214	switch (pp - parts + 1) {
tax	0:66300c77c6e9	215
tax	0:66300c77c6e9	216	case 0:
tax	0:66300c77c6e9	217	return (0); /* initial nondigit */
tax	0:66300c77c6e9	218
tax	0:66300c77c6e9	219	case 1: /* a -- 32 bits */
tax	0:66300c77c6e9	220	break;
tax	0:66300c77c6e9	221
tax	0:66300c77c6e9	222	case 2: /* a.b -- 8.24 bits */
tax	0:66300c77c6e9	223	if (val > 0xffffffUL) {
tax	0:66300c77c6e9	224	return (0);
tax	0:66300c77c6e9	225	}
tax	0:66300c77c6e9	226	val \|= parts[0] << 24;
tax	0:66300c77c6e9	227	break;
tax	0:66300c77c6e9	228
tax	0:66300c77c6e9	229	case 3: /* a.b.c -- 8.8.16 bits */
tax	0:66300c77c6e9	230	if (val > 0xffff) {
tax	0:66300c77c6e9	231	return (0);
tax	0:66300c77c6e9	232	}
tax	0:66300c77c6e9	233	val \|= (parts[0] << 24) \| (parts[1] << 16);
tax	0:66300c77c6e9	234	break;
tax	0:66300c77c6e9	235
tax	0:66300c77c6e9	236	case 4: /* a.b.c.d -- 8.8.8.8 bits */
tax	0:66300c77c6e9	237	if (val > 0xff) {
tax	0:66300c77c6e9	238	return (0);
tax	0:66300c77c6e9	239	}
tax	0:66300c77c6e9	240	val \|= (parts[0] << 24) \| (parts[1] << 16) \| (parts[2] << 8);
tax	0:66300c77c6e9	241	break;
tax	0:66300c77c6e9	242	default:
tax	0:66300c77c6e9	243	LWIP_ASSERT("unhandled", 0);
tax	0:66300c77c6e9	244	break;
tax	0:66300c77c6e9	245	}
tax	0:66300c77c6e9	246	if (addr) {
tax	0:66300c77c6e9	247	ip4_addr_set_u32(addr, htonl(val));
tax	0:66300c77c6e9	248	}
tax	0:66300c77c6e9	249	return (1);
tax	0:66300c77c6e9	250	}
tax	0:66300c77c6e9	251
tax	0:66300c77c6e9	252	/**
tax	0:66300c77c6e9	253	* Convert numeric IP address into decimal dotted ASCII representation.
tax	0:66300c77c6e9	254	* returns ptr to static buffer; not reentrant!
tax	0:66300c77c6e9	255	*
tax	0:66300c77c6e9	256	* @param addr ip address in network order to convert
tax	0:66300c77c6e9	257	* @return pointer to a global static (!) buffer that holds the ASCII
tax	0:66300c77c6e9	258	* represenation of addr
tax	0:66300c77c6e9	259	*/
tax	0:66300c77c6e9	260	char *
tax	0:66300c77c6e9	261	ipaddr_ntoa(const ip_addr_t *addr)
tax	0:66300c77c6e9	262	{
tax	0:66300c77c6e9	263	static char str[16];
tax	0:66300c77c6e9	264	return ipaddr_ntoa_r(addr, str, 16);
tax	0:66300c77c6e9	265	}
tax	0:66300c77c6e9	266
tax	0:66300c77c6e9	267	/**
tax	0:66300c77c6e9	268	* Same as ipaddr_ntoa, but reentrant since a user-supplied buffer is used.
tax	0:66300c77c6e9	269	*
tax	0:66300c77c6e9	270	* @param addr ip address in network order to convert
tax	0:66300c77c6e9	271	* @param buf target buffer where the string is stored
tax	0:66300c77c6e9	272	* @param buflen length of buf
tax	0:66300c77c6e9	273	* @return either pointer to buf which now holds the ASCII
tax	0:66300c77c6e9	274	* representation of addr or NULL if buf was too small
tax	0:66300c77c6e9	275	*/
tax	0:66300c77c6e9	276	char ipaddr_ntoa_r(const ip_addr_t addr, char *buf, int buflen)
tax	0:66300c77c6e9	277	{
tax	0:66300c77c6e9	278	u32_t s_addr;
tax	0:66300c77c6e9	279	char inv[3];
tax	0:66300c77c6e9	280	char *rp;
tax	0:66300c77c6e9	281	u8_t *ap;
tax	0:66300c77c6e9	282	u8_t rem;
tax	0:66300c77c6e9	283	u8_t n;
tax	0:66300c77c6e9	284	u8_t i;
tax	0:66300c77c6e9	285	int len = 0;
tax	0:66300c77c6e9	286
tax	0:66300c77c6e9	287	s_addr = ip4_addr_get_u32(addr);
tax	0:66300c77c6e9	288
tax	0:66300c77c6e9	289	rp = buf;
tax	0:66300c77c6e9	290	ap = (u8_t *)&s_addr;
tax	0:66300c77c6e9	291	for(n = 0; n < 4; n++) {
tax	0:66300c77c6e9	292	i = 0;
tax	0:66300c77c6e9	293	do {
tax	0:66300c77c6e9	294	rem = *ap % (u8_t)10;
tax	0:66300c77c6e9	295	*ap /= (u8_t)10;
tax	0:66300c77c6e9	296	inv[i++] = '0' + rem;
tax	0:66300c77c6e9	297	} while(*ap);
tax	0:66300c77c6e9	298	while(i--) {
tax	0:66300c77c6e9	299	if (len++ >= buflen) {
tax	0:66300c77c6e9	300	return NULL;
tax	0:66300c77c6e9	301	}
tax	0:66300c77c6e9	302	*rp++ = inv[i];
tax	0:66300c77c6e9	303	}
tax	0:66300c77c6e9	304	if (len++ >= buflen) {
tax	0:66300c77c6e9	305	return NULL;
tax	0:66300c77c6e9	306	}
tax	0:66300c77c6e9	307	*rp++ = '.';
tax	0:66300c77c6e9	308	ap++;
tax	0:66300c77c6e9	309	}
tax	0:66300c77c6e9	310	*--rp = 0;
tax	0:66300c77c6e9	311	return buf;
tax	0:66300c77c6e9	312	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	29 Mar 2011
Imports:	16
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

lwip/core/ipv4/ip_addr.c@0:66300c77c6e9, 2011-03-29 (annotated)

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