Ilya I
Example program with HTTPServer and sensor data streaming over TCPSockets, using Donatien Garnier's Net APIs and services code on top of LWIP. Files StreamServer.h and .cpp encapsulate streaming over TCPSockets. Broadcast is done by sendToAll(), and all incoming data is echoed back to the client. Echo code can be replaced with some remote control of the streaming interface. See main() that shows how to periodically send some data to all subscribed clients. To subscribe, a client should open a socket at <mbed_ip> port 123. I used few lines in TCL code to set up a quick sink for the data. HTTP files are served on port 80 concurrently to the streaming.
lwip/include/lwip/snmp_asn1.h@0:e614f7875b60, 2010-06-12 (annotated)
- Committer:
- iva2k
- Date:
- Sat Jun 12 06:01:50 2010 +0000
- Revision:
- 0:e614f7875b60
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| iva2k | 0:e614f7875b60 | 1 | /** |
| iva2k | 0:e614f7875b60 | 2 | * @file |
| iva2k | 0:e614f7875b60 | 3 | * Abstract Syntax Notation One (ISO 8824, 8825) codec. |
| iva2k | 0:e614f7875b60 | 4 | */ |
| iva2k | 0:e614f7875b60 | 5 | |
| iva2k | 0:e614f7875b60 | 6 | /* |
| iva2k | 0:e614f7875b60 | 7 | * Copyright (c) 2006 Axon Digital Design B.V., The Netherlands. |
| iva2k | 0:e614f7875b60 | 8 | * All rights reserved. |
| iva2k | 0:e614f7875b60 | 9 | * |
| iva2k | 0:e614f7875b60 | 10 | * Redistribution and use in source and binary forms, with or without modification, |
| iva2k | 0:e614f7875b60 | 11 | * are permitted provided that the following conditions are met: |
| iva2k | 0:e614f7875b60 | 12 | * |
| iva2k | 0:e614f7875b60 | 13 | * 1. Redistributions of source code must retain the above copyright notice, |
| iva2k | 0:e614f7875b60 | 14 | * this list of conditions and the following disclaimer. |
| iva2k | 0:e614f7875b60 | 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| iva2k | 0:e614f7875b60 | 16 | * this list of conditions and the following disclaimer in the documentation |
| iva2k | 0:e614f7875b60 | 17 | * and/or other materials provided with the distribution. |
| iva2k | 0:e614f7875b60 | 18 | * 3. The name of the author may not be used to endorse or promote products |
| iva2k | 0:e614f7875b60 | 19 | * derived from this software without specific prior written permission. |
| iva2k | 0:e614f7875b60 | 20 | * |
| iva2k | 0:e614f7875b60 | 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| iva2k | 0:e614f7875b60 | 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| iva2k | 0:e614f7875b60 | 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| iva2k | 0:e614f7875b60 | 24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| iva2k | 0:e614f7875b60 | 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| iva2k | 0:e614f7875b60 | 26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| iva2k | 0:e614f7875b60 | 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| iva2k | 0:e614f7875b60 | 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| iva2k | 0:e614f7875b60 | 29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| iva2k | 0:e614f7875b60 | 30 | * OF SUCH DAMAGE. |
| iva2k | 0:e614f7875b60 | 31 | * |
| iva2k | 0:e614f7875b60 | 32 | * Author: Christiaan Simons <christiaan.simons@axon.tv> |
| iva2k | 0:e614f7875b60 | 33 | */ |
| iva2k | 0:e614f7875b60 | 34 | |
| iva2k | 0:e614f7875b60 | 35 | #ifndef __LWIP_SNMP_ASN1_H__ |
| iva2k | 0:e614f7875b60 | 36 | #define __LWIP_SNMP_ASN1_H__ |
| iva2k | 0:e614f7875b60 | 37 | |
| iva2k | 0:e614f7875b60 | 38 | #include "lwip/opt.h" |
| iva2k | 0:e614f7875b60 | 39 | #include "lwip/err.h" |
| iva2k | 0:e614f7875b60 | 40 | #include "lwip/pbuf.h" |
| iva2k | 0:e614f7875b60 | 41 | #include "lwip/snmp.h" |
| iva2k | 0:e614f7875b60 | 42 | |
| iva2k | 0:e614f7875b60 | 43 | #if LWIP_SNMP |
| iva2k | 0:e614f7875b60 | 44 | |
| iva2k | 0:e614f7875b60 | 45 | #ifdef __cplusplus |
| iva2k | 0:e614f7875b60 | 46 | extern "C" { |
| iva2k | 0:e614f7875b60 | 47 | #endif |
| iva2k | 0:e614f7875b60 | 48 | |
| iva2k | 0:e614f7875b60 | 49 | #define SNMP_ASN1_UNIV (!0x80 | !0x40) |
| iva2k | 0:e614f7875b60 | 50 | #define SNMP_ASN1_APPLIC (!0x80 | 0x40) |
| iva2k | 0:e614f7875b60 | 51 | #define SNMP_ASN1_CONTXT ( 0x80 | !0x40) |
| iva2k | 0:e614f7875b60 | 52 | |
| iva2k | 0:e614f7875b60 | 53 | #define SNMP_ASN1_CONSTR (0x20) |
| iva2k | 0:e614f7875b60 | 54 | #define SNMP_ASN1_PRIMIT (!0x20) |
| iva2k | 0:e614f7875b60 | 55 | |
| iva2k | 0:e614f7875b60 | 56 | /* universal tags */ |
| iva2k | 0:e614f7875b60 | 57 | #define SNMP_ASN1_INTEG 2 |
| iva2k | 0:e614f7875b60 | 58 | #define SNMP_ASN1_OC_STR 4 |
| iva2k | 0:e614f7875b60 | 59 | #define SNMP_ASN1_NUL 5 |
| iva2k | 0:e614f7875b60 | 60 | #define SNMP_ASN1_OBJ_ID 6 |
| iva2k | 0:e614f7875b60 | 61 | #define SNMP_ASN1_SEQ 16 |
| iva2k | 0:e614f7875b60 | 62 | |
| iva2k | 0:e614f7875b60 | 63 | /* application specific (SNMP) tags */ |
| iva2k | 0:e614f7875b60 | 64 | #define SNMP_ASN1_IPADDR 0 /* octet string size(4) */ |
| iva2k | 0:e614f7875b60 | 65 | #define SNMP_ASN1_COUNTER 1 /* u32_t */ |
| iva2k | 0:e614f7875b60 | 66 | #define SNMP_ASN1_GAUGE 2 /* u32_t */ |
| iva2k | 0:e614f7875b60 | 67 | #define SNMP_ASN1_TIMETICKS 3 /* u32_t */ |
| iva2k | 0:e614f7875b60 | 68 | #define SNMP_ASN1_OPAQUE 4 /* octet string */ |
| iva2k | 0:e614f7875b60 | 69 | |
| iva2k | 0:e614f7875b60 | 70 | /* context specific (SNMP) tags */ |
| iva2k | 0:e614f7875b60 | 71 | #define SNMP_ASN1_PDU_GET_REQ 0 |
| iva2k | 0:e614f7875b60 | 72 | #define SNMP_ASN1_PDU_GET_NEXT_REQ 1 |
| iva2k | 0:e614f7875b60 | 73 | #define SNMP_ASN1_PDU_GET_RESP 2 |
| iva2k | 0:e614f7875b60 | 74 | #define SNMP_ASN1_PDU_SET_REQ 3 |
| iva2k | 0:e614f7875b60 | 75 | #define SNMP_ASN1_PDU_TRAP 4 |
| iva2k | 0:e614f7875b60 | 76 | |
| iva2k | 0:e614f7875b60 | 77 | err_t snmp_asn1_dec_type(struct pbuf *p, u16_t ofs, u8_t *type); |
| iva2k | 0:e614f7875b60 | 78 | err_t snmp_asn1_dec_length(struct pbuf *p, u16_t ofs, u8_t *octets_used, u16_t *length); |
| iva2k | 0:e614f7875b60 | 79 | err_t snmp_asn1_dec_u32t(struct pbuf *p, u16_t ofs, u16_t len, u32_t *value); |
| iva2k | 0:e614f7875b60 | 80 | err_t snmp_asn1_dec_s32t(struct pbuf *p, u16_t ofs, u16_t len, s32_t *value); |
| iva2k | 0:e614f7875b60 | 81 | err_t snmp_asn1_dec_oid(struct pbuf *p, u16_t ofs, u16_t len, struct snmp_obj_id *oid); |
| iva2k | 0:e614f7875b60 | 82 | err_t snmp_asn1_dec_raw(struct pbuf *p, u16_t ofs, u16_t len, u16_t raw_len, u8_t *raw); |
| iva2k | 0:e614f7875b60 | 83 | |
| iva2k | 0:e614f7875b60 | 84 | void snmp_asn1_enc_length_cnt(u16_t length, u8_t *octets_needed); |
| iva2k | 0:e614f7875b60 | 85 | void snmp_asn1_enc_u32t_cnt(u32_t value, u16_t *octets_needed); |
| iva2k | 0:e614f7875b60 | 86 | void snmp_asn1_enc_s32t_cnt(s32_t value, u16_t *octets_needed); |
| iva2k | 0:e614f7875b60 | 87 | void snmp_asn1_enc_oid_cnt(u8_t ident_len, s32_t *ident, u16_t *octets_needed); |
| iva2k | 0:e614f7875b60 | 88 | err_t snmp_asn1_enc_type(struct pbuf *p, u16_t ofs, u8_t type); |
| iva2k | 0:e614f7875b60 | 89 | err_t snmp_asn1_enc_length(struct pbuf *p, u16_t ofs, u16_t length); |
| iva2k | 0:e614f7875b60 | 90 | err_t snmp_asn1_enc_u32t(struct pbuf *p, u16_t ofs, u16_t octets_needed, u32_t value); |
| iva2k | 0:e614f7875b60 | 91 | err_t snmp_asn1_enc_s32t(struct pbuf *p, u16_t ofs, u16_t octets_needed, s32_t value); |
| iva2k | 0:e614f7875b60 | 92 | err_t snmp_asn1_enc_oid(struct pbuf *p, u16_t ofs, u8_t ident_len, s32_t *ident); |
| iva2k | 0:e614f7875b60 | 93 | err_t snmp_asn1_enc_raw(struct pbuf *p, u16_t ofs, u16_t raw_len, u8_t *raw); |
| iva2k | 0:e614f7875b60 | 94 | |
| iva2k | 0:e614f7875b60 | 95 | #ifdef __cplusplus |
| iva2k | 0:e614f7875b60 | 96 | } |
| iva2k | 0:e614f7875b60 | 97 | #endif |
| iva2k | 0:e614f7875b60 | 98 | |
| iva2k | 0:e614f7875b60 | 99 | #endif /* LWIP_SNMP */ |
| iva2k | 0:e614f7875b60 | 100 | |
| iva2k | 0:e614f7875b60 | 101 | #endif /* __LWIP_SNMP_ASN1_H__ */ |