[388] | 1 | /*
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| 2 | * TINET (TCP/IP Protocol Stack)
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| 3 | *
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| 4 | * Copyright (C) 2001-2017 by Dep. of Computer Science and Engineering
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| 5 | * Tomakomai National College of Technology, JAPAN
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| 6 | *
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| 7 | * ä¸è¨èä½æ¨©è
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| 8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 9 | * ã«ãã£ã¦å
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| 10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 13 | å¸ï¼ä»¥ä¸ï¼
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| 14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 19 | * ç¨ã§ããå½¢ã§åé
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| 20 | å¸ããå ´åã«ã¯ï¼åé
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| 21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 22 | * è
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| 23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 26 | * ç¨ã§ããªãå½¢ã§åé
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| 27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
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| 28 | * (a) åé
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| 29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 33 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 34 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 35 | 責ãããã¨ï¼
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| 36 | *
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| 37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 38 | ã
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| 39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 42 | *
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| 43 | * @(#) $Id: tcp_discard_srv.c 388 2019-05-22 11:25:18Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * DISCARD ãµã¼ã
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| 48 | *
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| 49 | * ã»çã³ãã¼ API
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| 50 | * ã»IPv4
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| 51 | * ã»IPv6
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| 52 | */
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| 53 |
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| 54 | #include <string.h>
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| 55 |
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| 56 | #ifdef TARGET_KERNEL_ASP
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| 57 |
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| 58 | #include <kernel.h>
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| 59 | #include <sil.h>
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| 60 | #include <t_syslog.h>
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| 61 | #include "tinet_cfg.h"
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| 62 |
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| 63 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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| 64 |
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| 65 | #ifdef TARGET_KERNEL_JSP
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| 66 |
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| 67 | #include <t_services.h>
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| 68 | #include "tinet_id.h"
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| 69 |
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| 70 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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| 71 |
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| 72 | #include <netinet/in.h>
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| 73 | #include <netinet/in_itron.h>
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| 74 |
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| 75 | #include <netapp/netapp.h>
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| 76 | #include <netapp/netapp_var.h>
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| 77 | #include <netapp/tcp_discard_srv.h>
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| 78 |
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| 79 | #ifdef USE_TCP_DISCARD_SRV
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| 80 |
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| 81 | /*
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| 82 | * 表示
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| 83 | */
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| 84 |
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| 85 | //#define SHOW_RCV_RANGE
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| 86 | //#define SHOW_RCV_DATA
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| 87 |
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| 88 | /*
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| 89 | * å
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| 90 | ¨åå¤æ°
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| 91 | */
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| 92 |
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| 93 | /* TCP éåä¿¡ã¦ã£ã³ããããã¡ */
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| 94 |
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| 95 | #ifndef TCP_CFG_RWBUF_CSAVE_ONLY
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| 96 | uint8_t tcp_discard_srv_rwbuf[TCP_DISCARD_SRV_RWBUF_SIZE];
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| 97 | #endif
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| 98 |
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| 99 | /*
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| 100 | * TCP DISCARD ãµã¼ãã¿ã¹ã¯
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| 101 | */
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| 102 |
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| 103 | #define BUF_SIZE TCP_DISCARD_SRV_RWBUF_SIZE
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| 104 |
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| 105 | #ifdef USE_COPYSAVE_API
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| 106 |
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| 107 | static ER
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| 108 | tcp_discard_srv (ID cepid, ID repid)
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| 109 | {
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| 110 | T_IPEP dst;
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| 111 | ER_UINT rlen;
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| 112 | ER error;
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| 113 | SYSTIM time;
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| 114 | uint32_t total;
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| 115 | uint16_t count;
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| 116 | uint8_t *buf;
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| 117 |
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| 118 | #ifdef SHOW_RCV_DATA
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| 119 | uint_t ix;
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| 120 | #endif /* of #ifdef SHOW_RCV_DATA */
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| 121 |
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| 122 | if ((error = TCP_ACP_CEP(cepid, repid, &dst, TMO_FEVR)) != E_OK) {
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| 123 | syslog(LOG_NOTICE, "[TDSn:%02u ACP] accept error: %s", cepid, itron_strerror(error));
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| 124 | return error;
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| 125 | }
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| 126 |
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| 127 | #ifdef USE_TCP_EXTENTIONS
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| 128 | if ((error = FREE_TCP_REP(repid, true)) != E_OK) {
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| 129 | syslog(LOG_NOTICE, "[TDSn:%02u DEL] REP delete error: %s", cepid, itron_strerror(error));
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| 130 | return error;
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| 131 | }
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| 132 | #endif /* of #ifdef USE_TCP_EXTENTIONS */
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| 133 |
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| 134 | count = total = 0;
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| 135 | get_tim(&time);
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| 136 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] conct: %7lu, from: %s.%d",
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| 137 | cepid, time / SYSTIM_HZ, IP2STR(NULL, &dst.ipaddr), dst.portno);
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| 138 | while ((rlen = tcp_rcv_buf(cepid, (void*)&buf, TMO_FEVR)) > 0) {
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| 139 | count ++;
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| 140 |
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| 141 | #ifdef SHOW_RCV_RANGE
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| 142 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] count: %6lu, len: %4u, data: %02x -> %02x",
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| 143 | cepid, count, (uint16_t)rlen, *buf, *(buf + rlen - 1));
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| 144 | #endif /* of #ifdef SHOW_RCV_RANGE */
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| 145 |
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| 146 | #ifdef SHOW_RCV_DATA
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| 147 | for (ix = 0; ix < rlen; ix ++)
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| 148 | cons_putchar(CONSOLE_PORTID, *(buf + ix));
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| 149 | #endif /* of #ifdef SHOW_RCV_DATA */
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| 150 |
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| 151 | if ((error = tcp_rel_buf(cepid, rlen)) != E_OK) {
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| 152 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] rel buf error: %s",
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| 153 | cepid, itron_strerror(error));
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| 154 | rlen = 0;
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| 155 | break;
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| 156 | }
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| 157 | total += rlen;
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| 158 | }
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| 159 |
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| 160 | if (rlen != 0)
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| 161 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] recv buf error: %s", cepid, itron_strerror(rlen));
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| 162 |
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| 163 | if ((error = tcp_sht_cep(cepid)) != E_OK)
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| 164 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] shutdown error: %s", cepid, itron_strerror(error));
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| 165 |
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| 166 | if ((error = tcp_cls_cep(cepid, TMO_FEVR)) != E_OK)
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| 167 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] close error: %s", cepid, itron_strerror(error));
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| 168 |
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| 169 | get_tim(&time);
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| 170 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] finsh: %7lu, ttl: %lu",
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| 171 | cepid, time / SYSTIM_HZ, count, total);
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| 172 |
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| 173 | return error;
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| 174 | }
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| 175 |
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| 176 | #else /* of #ifdef USE_COPYSAVE_API */
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| 177 |
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| 178 | static ER
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| 179 | tcp_discard_srv (ID cepid, ID repid)
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| 180 | {
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| 181 | static char buffer[BUF_SIZE];
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| 182 |
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| 183 | T_IPEP dst;
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| 184 | ER_UINT rlen;
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| 185 | ER error;
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| 186 | SYSTIM time;
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| 187 | uint32_t total;
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| 188 | uint16_t count;
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| 189 | uint8_t *buf = buffer;
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| 190 |
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| 191 | if ((error = TCP_ACP_CEP(cepid, repid, &dst, TMO_FEVR)) != E_OK) {
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| 192 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] accept error: %s", cepid, itron_strerror(error));
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| 193 | return error;
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| 194 | }
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| 195 |
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| 196 | #ifdef USE_TCP_EXTENTIONS
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| 197 | if ((error = FREE_TCP_REP(repid, true)) != E_OK) {
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| 198 | syslog(LOG_NOTICE, "[TDSn:%02u DEL] REP delete error: %s", cepid, itron_strerror(error));
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| 199 | return error;
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| 200 | }
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| 201 | #endif /* of #ifdef USE_TCP_EXTENTIONS */
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| 202 |
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| 203 | count = total = 0;
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| 204 | get_tim(&time);
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| 205 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] conct: %7lu, from: %s.%d",
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| 206 | cepid, time / SYSTIM_HZ, IP2STR(NULL, &dst.ipaddr), dst.portno);
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| 207 | while ((rlen = tcp_rcv_dat(cepid, buf, BUF_SIZE - 1, TMO_FEVR)) > 0) {
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| 208 | count ++;
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| 209 |
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| 210 | #ifdef SHOW_RCV_RANGE
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| 211 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] count: %6lu, len: %4u, data: %02x -> %02x",
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| 212 | cepid, count, (uint16_t)rlen, *buf, *(buf + rlen - 1));
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| 213 | #endif /* of #ifdef SHOW_RCV_RANGE */
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| 214 |
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| 215 | total += rlen;
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| 216 | }
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| 217 | if (rlen != 0)
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| 218 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] recv error: %s", cepid, itron_strerror(rlen));
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| 219 |
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| 220 | if ((error = tcp_sht_cep(cepid)) != E_OK)
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| 221 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] shutdown error: %s", cepid, itron_strerror(error));
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| 222 |
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| 223 | if ((error = tcp_cls_cep(cepid, TMO_FEVR)) != E_OK)
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| 224 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] close error: %s", cepid, itron_strerror(error));
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| 225 |
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| 226 | get_tim(&time);
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| 227 | syslog(LOG_NOTICE, "[TDSn:%02u RCV] finsh: %7lu, ttl: %lu",
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| 228 | cepid, time / SYSTIM_HZ, count, total);
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| 229 |
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| 230 | return error;
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| 231 | }
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| 232 |
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| 233 | #endif /* of #ifdef USE_COPYSAVE_API */
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| 234 |
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| 235 | #ifdef USE_TCP_EXTENTIONS
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| 236 |
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| 237 | /*
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| 238 | * get_tcp_rep -- TCP åä»å£ãç²å¾ããã
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| 239 | */
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| 240 |
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| 241 | static ER
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| 242 | get_tcp_rep (ID *repid)
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| 243 | {
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| 244 | ID tskid;
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| 245 | T_TCPN_CREP crep;
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| 246 |
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| 247 | get_tid(&tskid);
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| 248 |
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| 249 | crep.repatr = UINT_C(0);
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| 250 | crep.myaddr.portno = UINT_C(9);
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| 251 |
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| 252 | #if defined(SUPPORT_INET6)
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| 253 |
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| 254 | memcpy(&crep.myaddr.ipaddr, &ipv6_addrany, sizeof(T_IN6_ADDR));
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| 255 |
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| 256 | #else /* #if defined(SUPPORT_INET6) */
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| 257 |
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| 258 | #if defined(SUPPORT_INET4)
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| 259 | crep.myaddr.ipaddr = IPV4_ADDRANY;
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| 260 | #endif
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| 261 |
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| 262 | #endif /* #if defined(SUPPORT_INET6) */
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| 263 |
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| 264 | return ALLOC_TCP_REP(repid, tskid, &crep);
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| 265 | }
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| 266 |
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| 267 | /*
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| 268 | * get_tcp_cep -- TCP é信端ç¹ã¨ãç²å¾ããã
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| 269 | */
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| 270 |
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| 271 | static ER
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| 272 | get_tcp_cep (ID *cepid)
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| 273 | {
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| 274 | ID tskid;
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| 275 | T_TCP_CCEP ccep;
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| 276 |
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| 277 | get_tid(&tskid);
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| 278 |
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| 279 | ccep.cepatr = UINT_C(0);
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| 280 | ccep.sbuf = NADR;
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| 281 | ccep.sbufsz = 0;
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| 282 | ccep.rbufsz = TCP_DISCARD_SRV_RWBUF_SIZE;
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| 283 | ccep.callback = NULL;
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| 284 |
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| 285 | #ifdef TCP_CFG_RWBUF_CSAVE
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| 286 | ccep.rbuf = NADR;
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| 287 | #else
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| 288 | ccep.rbuf = tcp_discard_srv_rwbuf;
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| 289 | #endif
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| 290 |
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| 291 | return ALLOC_TCP_CEP(cepid, tskid, &ccep);
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| 292 | }
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| 293 |
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| 294 | /*
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| 295 | * tcp_discard_srv_task -- TCP ã¨ã³ã¼ãµã¼ãã¿ã¹ã¯
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| 296 | */
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| 297 |
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| 298 | void
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| 299 | tcp_discard_srv_task (intptr_t exinf)
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| 300 | {
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| 301 | ID tskid, cepid, repid;
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| 302 | ER error = E_OK;
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| 303 |
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| 304 | syscall(get_tid(&tskid));
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| 305 |
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| 306 | #if defined(SUPPORT_INET6)
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| 307 | #if defined(SUPPORT_INET4)
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| 308 | syslog(LOG_NOTICE, "[TCPn DISCARD SRV:%d] started.", tskid);
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| 309 | #else
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| 310 | syslog(LOG_NOTICE, "[TCP6 DISCARD SRV:%d] started.", tskid);
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| 311 | #endif
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| 312 | #else
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| 313 | syslog(LOG_NOTICE, "[TCP4 DISCARD SRV:%d] started.", tskid);
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| 314 | #endif
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| 315 |
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| 316 | while (true) {
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| 317 |
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| 318 | syscall(slp_tsk());
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| 319 | if ((error = get_tcp_cep (&cepid)) != E_OK) {
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| 320 | syslog(LOG_NOTICE, "[TDSn:00 EXT] CEP create error: %s", itron_strerror(error));
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| 321 | continue;
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| 322 | }
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| 323 |
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| 324 | while (true) {
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| 325 |
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| 326 | if ((error = get_tcp_rep (&repid)) != E_OK) {
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| 327 | syslog(LOG_NOTICE, "[TDSn:00 EXT] REP create error: %s", itron_strerror(error));
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| 328 | break;
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| 329 | }
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| 330 | else if ((error = tcp_discard_srv(cepid, repid)) != E_OK) {
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| 331 | error = FREE_TCP_REP(repid, error != E_DLT);
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| 332 | break;
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| 333 | }
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| 334 | }
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| 335 |
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| 336 | if ((error = FREE_TCP_CEP(cepid)) != E_OK)
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| 337 | syslog(LOG_NOTICE, "[TDSn:%02u EXT] CEP delete error: %s", cepid, itron_strerror(error));
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| 338 |
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| 339 | }
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| 340 | }
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| 341 |
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| 342 | #else /* of #ifdef USE_TCP_EXTENTIONS */
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| 343 |
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| 344 | void
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| 345 | tcp_discard_srv_task(intptr_t exinf)
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| 346 | {
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| 347 | ID tskid;
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| 348 |
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| 349 | get_tid(&tskid);
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| 350 |
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| 351 | #if defined(SUPPORT_INET6)
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| 352 | #if defined(SUPPORT_INET4)
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| 353 | syslog(LOG_NOTICE, "[TCPn DISCARD SRV:%d,%d] started.", tskid, (ID)exinf);
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| 354 | #else
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| 355 | syslog(LOG_NOTICE, "[TCP6 DISCARD SRV:%d,%d] started.", tskid, (ID)exinf);
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| 356 | #endif
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| 357 | #else
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| 358 | syslog(LOG_NOTICE, "[TCP4 DISCARD SRV:%d,%d] started.", tskid, (ID)exinf);
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| 359 | #endif
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| 360 |
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| 361 | while (true) {
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| 362 | while (tcp_discard_srv((ID)exinf, TCP_DISCARD_SRV_REPID) == E_OK)
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| 363 | ;
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| 364 | }
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| 365 | }
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| 366 |
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| 367 | #endif /* of #ifdef USE_TCP_EXTENTIONS */
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| 368 |
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| 369 | #endif /* of #ifdef USE_TCP_DISCARD_SRV */
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