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annotate freeDiameter/fD.h @ 258:5df55136361b

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Updated copyright information
author Sebastien Decugis <sdecugis@nict.go.jp>
date Fri, 16 Apr 2010 17:04:15 +0900
parents 965f5971dc23
children 0daf6fc2b751
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> *
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4 * *
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5 * Copyright (c) 2010, WIDE Project and NICT *
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 /* This file contains the definitions for internal use in the freeDiameter daemon */
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37
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38 #ifndef _FD_H
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39 #define _FD_H
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40
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41 #include <freeDiameter/freeDiameter-host.h>
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42 #include <freeDiameter/freeDiameter.h>
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44 #ifdef DISABLE_SCTP
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45 #undef IPPROTO_SCTP
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46 #define IPPROTO_SCTP (2 = 4) /* some compilation error to spot the references */
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47 #endif /* DISABLE_SCTP */
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48
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49 /* Timeout for establishing a connection */
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50 #ifndef CNX_TIMEOUT
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51 #define CNX_TIMEOUT 10 /* in seconds */
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52 #endif /* CNX_TIMEOUT */
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53
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54 /* Timeout for receiving a CER after incoming connection is established */
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55 #ifndef INCNX_TIMEOUT
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56 #define INCNX_TIMEOUT 20 /* in seconds */
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57 #endif /* INCNX_TIMEOUT */
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58
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59 /* Timeout for receiving a CEA after CER is sent */
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60 #ifndef CEA_TIMEOUT
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61 #define CEA_TIMEOUT 10 /* in seconds */
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62 #endif /* CEA_TIMEOUT */
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63
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64 /* The timeout value to wait for answer to a DPR */
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65 #ifndef DPR_TIMEOUT
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66 #define DPR_TIMEOUT 15 /* in seconds */
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67 #endif /* DPR_TIMEOUT */
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69 /* The Vendor-Id to advertise in CER/CEA */
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70 #ifndef MY_VENDOR_ID
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71 #define MY_VENDOR_ID 0 /* Reserved value to tell it must be ignored */
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72 #endif /* MY_VENDOR_ID */
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75
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76 /* Configuration */
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77 int fd_conf_init();
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78 void fd_conf_dump();
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79 int fd_conf_parse();
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80 int fddparse(struct fd_config * conf); /* yacc generated */
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81
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82 /* Extensions */
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83 int fd_ext_add( char * filename, char * conffile );
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84 int fd_ext_load();
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85 void fd_ext_dump(void);
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86 int fd_ext_fini(void);
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87
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88 /* Messages */
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89 int fd_msg_init(void);
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90 struct dict_object * fd_dict_avp_OSI; /* Origin-State-Id */
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91 struct dict_object * fd_dict_cmd_CER; /* Capabilities-Exchange-Request */
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92 struct dict_object * fd_dict_cmd_DWR; /* Device-Watchdog-Request */
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93 struct dict_object * fd_dict_avp_DC; /* Disconnect-Cause */
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94 struct dict_object * fd_dict_cmd_DPR; /* Disconnect-Peer-Request */
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95
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96 /* Global message queues */
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97 extern struct fifo * fd_g_incoming; /* all messages received from other peers, except local messages (CER, ...) */
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98 extern struct fifo * fd_g_outgoing; /* messages to be sent to other peers on the network following routing procedure */
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99 extern struct fifo * fd_g_local; /* messages to be handled to local extensions */
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100 /* Message queues */
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101 int fd_queues_init(void);
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102 int fd_queues_fini(struct fifo ** queue);
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103
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104 /* Create all the dictionary objects defined in the Diameter base RFC. */
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105 int fd_dict_base_protocol(struct dictionary * dict);
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106
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107 /* Routing */
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108 int fd_rtdisp_init(void);
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109 int fd_rtdisp_cleanstop(void);
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110 int fd_rtdisp_fini(void);
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111 int fd_rtdisp_cleanup(void);
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112
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113 /* Sentinel for the sent requests list */
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114 struct sr_list {
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115 struct fd_list srs;
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116 pthread_mutex_t mtx;
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117 };
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118
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119 /* Peers */
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120 struct fd_peer { /* The "real" definition of the peer structure */
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121
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122 /* The public data */
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123 struct peer_hdr p_hdr;
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124
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125 /* Eye catcher, EYEC_PEER */
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126 int p_eyec;
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127 #define EYEC_PEER 0x373C9336
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128
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129 /* Origin of this peer object, for debug */
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130 char *p_dbgorig;
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131
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132 /* Chaining in peers sublists */
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133 struct fd_list p_actives; /* list of peers in the STATE_OPEN state -- used by routing */
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134 struct fd_list p_expiry; /* list of expiring peers, ordered by their timeout value */
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135 struct timespec p_exp_timer; /* Timestamp where the peer will expire; updated each time activity is seen on the peer (except DW) */
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136
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137 /* Some flags influencing the peer state machine */
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138 struct {
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139 unsigned pf_responder : 1; /* The peer has been created to handle incoming connection */
154
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140 unsigned pf_delete : 1; /* Destroy the peer when the connection is terminated */
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141
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142 unsigned pf_dw_pending : 1; /* A DWR message was sent and not answered yet */
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143
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144 unsigned pf_cnx_pb : 1; /* The peer was disconnected because of watchdogs; must exchange 3 watchdogs before putting back to normal */
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145 unsigned pf_reopen_cnt : 2; /* remaining DW to be exchanged after re-established connection */
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146
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147 } p_flags;
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148
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149 /* The events queue, peer state machine thread, timer for states timeouts */
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150 struct fifo *p_events; /* The mutex of this FIFO list protects also the state and timer information */
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151 pthread_t p_psm;
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152 struct timespec p_psm_timer;
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153
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154 /* Outgoing message queue, and thread managing sending the messages */
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155 struct fifo *p_tosend;
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156 pthread_t p_outthr;
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157
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158 /* The next hop-by-hop id value for the link, only read & modified by p_outthr */
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159 uint32_t p_hbh;
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160
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161 /* Sent requests (for fallback), list of struct sentreq ordered by hbh */
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162 struct sr_list p_sr;
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163
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164 /* Data for transitional states before the peer is in OPEN state */
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165 struct {
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166 struct cnxctx * p_receiver; /* Only used in case of election */
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167 struct msg * p_cer; /* Only used in case of election */
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168
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169 pthread_t p_ini_thr; /* Initiator thread for establishing a connection */
38
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170 struct fd_list p_connparams; /* The list of connection attempts, see p_cnx.c */
37
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171 };
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172
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173 /* connection context: socket and related information */
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174 struct cnxctx *p_cnxctx;
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175
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176 /* Callback for peer validation after the handshake */
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177 int (*p_cb2)(struct peer_info *);
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178
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179 /* Callback on initial connection success / failure after the peer was added */
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180 void (*p_cb)(struct peer_info *, void *);
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181 void *p_cb_data;
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182
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183 };
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184 #define CHECK_PEER( _p ) \
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185 (((_p) != NULL) && (((struct fd_peer *)(_p))->p_eyec == EYEC_PEER))
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186
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187 /* Events codespace for struct fd_peer->p_events */
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188 enum {
16
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189 /* Dump all info about this peer in the debug log */
25
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190 FDEVP_DUMP_ALL = 1500
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191
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192 /* request to terminate this peer : disconnect, requeue all messages */
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193 ,FDEVP_TERMINATE
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194
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195 /* A connection object has received a message. (data contains the buffer) */
22
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196 ,FDEVP_CNX_MSG_RECV
25
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197
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198 /* A connection object has encountered an error (disconnected). */
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199 ,FDEVP_CNX_ERROR
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200
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201 /* Endpoints of a connection have been changed (multihomed SCTP). */
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202 ,FDEVP_CNX_EP_CHANGE
22
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203
228
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204 /* The connection is being shutdown (SCTP notification). */
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205 ,FDEVP_CNX_SHUTDOWN
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206
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207 /* A new connection (with a CER) has been received */
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208 ,FDEVP_CNX_INCOMING
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209
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210 /* A new connection has been established to the remote peer (event data is the cnxctx object) */
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211 ,FDEVP_CNX_ESTABLISHED
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212
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213 /* A connection attempt (initiator side) has failed */
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214 ,FDEVP_CNX_FAILED
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215
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216 /* The PSM state is expired */
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217 ,FDEVP_PSM_TIMEOUT
22
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218
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219 };
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220 #define CHECK_PEVENT( _e ) \
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221 (((int)(_e) >= FDEVP_DUMP_ALL) && ((int)(_e) <= FDEVP_PSM_TIMEOUT))
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222 /* The following macro is actually called in p_psm.c -- another solution would be to declare it static inline */
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223 #define DECLARE_PEV_STR() \
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224 const char * fd_pev_str(int event) \
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225 { \
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226 switch (event) { \
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227 case_str(FDEVP_DUMP_ALL); \
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228 case_str(FDEVP_TERMINATE); \
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229 case_str(FDEVP_CNX_MSG_RECV); \
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230 case_str(FDEVP_CNX_ERROR); \
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231 case_str(FDEVP_CNX_EP_CHANGE); \
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diff changeset
232 case_str(FDEVP_CNX_INCOMING); \
37
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233 case_str(FDEVP_CNX_ESTABLISHED); \
70
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diff changeset
234 case_str(FDEVP_CNX_FAILED); \
33
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235 case_str(FDEVP_PSM_TIMEOUT); \
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diff changeset
236 } \
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237 TRACE_DEBUG(FULL, "Unknown event : %d", event); \
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238 return "Unknown event"; \
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239 }
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diff changeset
240 const char * fd_pev_str(int event);
12
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diff changeset
241
229
965f5971dc23 Broadcast CEA over all streams to avoid possible race condition
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diff changeset
242 /* The data structure for FDEVP_CNX_INCOMING event */
29
5ba91682f0bc Added a test for cnxctx (tbc) and fixed some bugs
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diff changeset
243 struct cnx_incoming {
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244 struct msg * cer; /* the CER message received on this connection */
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diff changeset
245 struct cnxctx * cnx; /* The connection context */
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246 int validate; /* The peer is new, it must be validated (by an extension) or error CEA to be sent */
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247 };
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diff changeset
248
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249
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250 /* Functions */
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251 int fd_peer_fini();
12
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252 void fd_peer_dump_list(int details);
16
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253 void fd_peer_dump(struct fd_peer * peer, int details);
28
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254 int fd_peer_alloc(struct fd_peer ** ptr);
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255 int fd_peer_free(struct fd_peer ** ptr);
29
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256 int fd_peer_handle_newCER( struct msg ** cer, struct cnxctx ** cnx );
13
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257 /* fd_peer_add declared in freeDiameter.h */
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258 int fd_peer_validate( struct fd_peer * peer );
34
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diff changeset
259 void fd_peer_failover_msg(struct fd_peer * peer);
11
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260
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261 /* Peer expiry */
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262 int fd_p_expi_init(void);
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263 int fd_p_expi_fini(void);
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264 int fd_p_expi_update(struct fd_peer * peer );
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265
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266 /* Peer state machine */
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267 int fd_psm_start();
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268 int fd_psm_begin(struct fd_peer * peer );
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269 int fd_psm_terminate(struct fd_peer * peer, char * reason );
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270 void fd_psm_abord(struct fd_peer * peer );
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271 void fd_psm_next_timeout(struct fd_peer * peer, int add_random, int delay);
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272 int fd_psm_change_state(struct fd_peer * peer, int new_state);
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273 void fd_psm_cleanup(struct fd_peer * peer, int terminate);
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274
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275 /* Peer out */
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276 int fd_out_send(struct msg ** msg, struct cnxctx * cnx, struct fd_peer * peer, uint32_t flags);
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277 int fd_out_start(struct fd_peer * peer);
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278 int fd_out_stop(struct fd_peer * peer);
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279
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280 /* Initiating connections */
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281 int fd_p_cnx_init(struct fd_peer * peer);
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282 void fd_p_cnx_abort(struct fd_peer * peer, int cleanup_all);
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283
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284 /* Peer sent requests cache */
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285 int fd_p_sr_store(struct sr_list * srlist, struct msg **req, uint32_t *hbhloc, uint32_t hbh_restore);
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286 int fd_p_sr_fetch(struct sr_list * srlist, uint32_t hbh, struct msg **req);
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287 void fd_p_sr_failover(struct sr_list * srlist);
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288
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289 /* Local Link messages (CER/CEA, DWR/DWA, DPR/DPA) */
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290 int fd_p_ce_msgrcv(struct msg ** msg, int req, struct fd_peer * peer);
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291 int fd_p_ce_handle_newCER(struct msg ** msg, struct fd_peer * peer, struct cnxctx ** cnx, int valid);
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292 int fd_p_ce_handle_newcnx(struct fd_peer * peer, struct cnxctx * initiator);
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293 int fd_p_ce_process_receiver(struct fd_peer * peer);
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294 void fd_p_ce_clear_cnx(struct fd_peer * peer, struct cnxctx ** cnx_kept);
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295 int fd_p_dw_handle(struct msg ** msg, int req, struct fd_peer * peer);
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296 int fd_p_dw_timeout(struct fd_peer * peer);
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297 int fd_p_dw_reopen(struct fd_peer * peer);
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298 int fd_p_dp_handle(struct msg ** msg, int req, struct fd_peer * peer);
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299 int fd_p_dp_initiate(struct fd_peer * peer, char * reason);
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diff changeset
300
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301 /* Active peers -- routing process should only ever take the read lock, the write lock is managed by PSMs */
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diff changeset
302 extern struct fd_list fd_g_activ_peers;
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diff changeset
303 extern pthread_rwlock_t fd_g_activ_peers_rw; /* protect the list */
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304
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305
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306 /* Server sockets */
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307 void fd_servers_dump();
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308 int fd_servers_start();
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309 int fd_servers_stop();
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310
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311 /* Connection contexts -- there are also definitions in cnxctx.h for the relevant files */
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312 struct cnxctx * fd_cnx_serv_tcp(uint16_t port, int family, struct fd_endpoint * ep);
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313 struct cnxctx * fd_cnx_serv_sctp(uint16_t port, struct fd_list * ep_list);
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314 int fd_cnx_serv_listen(struct cnxctx * conn);
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315 struct cnxctx * fd_cnx_serv_accept(struct cnxctx * serv);
24
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diff changeset
316 struct cnxctx * fd_cnx_cli_connect_tcp(sSA * sa, socklen_t addrlen);
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diff changeset
317 struct cnxctx * fd_cnx_cli_connect_sctp(int no_ip6, uint16_t port, struct fd_list * list);
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318 int fd_cnx_start_clear(struct cnxctx * conn, int loop);
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319 void fd_cnx_sethostname(struct cnxctx * conn, char * hn);
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320 int fd_cnx_handshake(struct cnxctx * conn, int mode, char * priority, void * alt_creds);
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diff changeset
321 char * fd_cnx_getid(struct cnxctx * conn);
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322 int fd_cnx_getproto(struct cnxctx * conn);
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diff changeset
323 int fd_cnx_getTLS(struct cnxctx * conn);
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324 int fd_cnx_getcred(struct cnxctx * conn, const gnutls_datum_t **cert_list, unsigned int *cert_list_size);
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325 int fd_cnx_getendpoints(struct cnxctx * conn, struct fd_list * local, struct fd_list * remote);
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diff changeset
326 char * fd_cnx_getremoteid(struct cnxctx * conn);
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diff changeset
327 int fd_cnx_receive(struct cnxctx * conn, struct timespec * timeout, unsigned char **buf, size_t * len);
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diff changeset
328 int fd_cnx_recv_setaltfifo(struct cnxctx * conn, struct fifo * alt_fifo); /* send FDEVP_CNX_MSG_RECV event to the fifo list */
229
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diff changeset
329 int fd_cnx_send(struct cnxctx * conn, unsigned char * buf, size_t len, uint32_t flags);
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diff changeset
330 void fd_cnx_destroy(struct cnxctx * conn);
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parents: 16
diff changeset
331
229
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diff changeset
332 /* Flags for the fd_cnx_send function : */
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333 #define FD_CNX_ORDERED (1 << 0) /* All messages sent with this flag set will be delivered in the same order. No guarantee on other messages */
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diff changeset
334 #define FD_CNX_BROADCAST (1 << 1) /* The message is sent over all stream pairs, in case of SCTP. No effect on TCP */
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335
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diff changeset
336 #endif /* _FD_H */
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