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annotate freeDiameter/fD.h @ 25:67ca08d5bc48

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Completed connection context files
author Sebastien Decugis <sdecugis@nict.go.jp>
date Mon, 26 Oct 2009 16:00:49 +0900
parents bd83ce9328ed
children 3628f7d2ba88
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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) 2009, 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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43
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44 /* Timeout for establishing a connection */
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45 #ifndef CNX_TIMEOUT
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46 #define CNX_TIMEOUT 10 /* in seconds */
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47 #endif /* CNX_TIMEOUT */
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48
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49 /* Timeout for receiving a CER after incoming connection is established */
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50 #ifndef INCNX_TIMEOUT
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51 #define INCNX_TIMEOUT 20 /* in seconds */
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52 #endif /* INCNX_TIMEOUT */
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53
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54 /* Timeout for receiving a CEA after CER is sent */
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55 #ifndef CEA_TIMEOUT
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56 #define CEA_TIMEOUT 10 /* in seconds */
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57 #endif /* CEA_TIMEOUT */
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58
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59 /* The timeout value to wait for answer to a DPR */
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60 #ifndef DPR_TIMEOUT
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61 #define DPR_TIMEOUT 15 /* in seconds */
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62 #endif /* DPR_TIMEOUT */
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63
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64 /* Configuration */
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65 int fd_conf_init();
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66 void fd_conf_dump();
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67 int fd_conf_parse();
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68 int fddparse(struct fd_config * conf); /* yacc generated */
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69
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70 /* Extensions */
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71 int fd_ext_add( char * filename, char * conffile );
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72 int fd_ext_load();
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73 void fd_ext_dump(void);
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74 int fd_ext_fini(void);
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75
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76 /* Messages */
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77 int fd_msg_init(void);
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78
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79 /* Global message queues */
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80 extern struct fifo * fd_g_incoming; /* all messages received from other peers, except local messages (CER, ...) */
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81 extern struct fifo * fd_g_outgoing; /* messages to be sent to other peers on the network following routing procedure */
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82 extern struct fifo * fd_g_local; /* messages to be handled to local extensions */
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83 /* Message queues */
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84 int fd_queues_init(void);
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85 int fd_queues_fini(void);
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86
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87 /* Create all the dictionary objects defined in the Diameter base RFC. */
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88 int fd_dict_base_protocol(struct dictionary * dict);
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89
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90 /* Peers */
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91 struct fd_peer { /* The "real" definition of the peer structure */
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92
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93 /* The public data */
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94 struct peer_hdr p_hdr;
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95
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96 /* Eye catcher, EYEC_PEER */
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97 int p_eyec;
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98 #define EYEC_PEER 0x373C9336
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99
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100 /* Origin of this peer object, for debug */
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101 char *p_dbgorig;
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102
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103 /* Chaining in peers sublists */
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104 struct fd_list p_actives; /* list of peers in the STATE_OPEN state -- faster routing creation */
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105 struct fd_list p_expiry; /* list of expiring peers, ordered by their timeout value */
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106 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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107
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108 /* Some flags influencing the peer state machine */
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109 struct {
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110 unsigned pf_responder : 1; /* The local peer is responder on the connection */
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111
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112 unsigned pf_dw_pending : 1; /* A DWR message was sent and not answered yet */
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113
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114 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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115 unsigned pf_reopen_cnt : 2; /* remaining DW to be exchanged after re-established connection */
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116
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117 /* to be completed */
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118
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119 } p_flags;
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120
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121 /* The events queue, peer state machine thread, timer for states timeouts */
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122 struct fifo *p_events; /* The mutex of this FIFO list protects also the state and timer information */
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123 pthread_t p_psm;
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124 struct timespec p_psm_timer;
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125
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126 /* Received message queue, and thread managing reception of messages */
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127 struct fifo *p_recv;
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128 pthread_t p_inthr;
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129
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130 /* Outgoing message queue, and thread managing sending the messages */
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131 struct fifo *p_tosend;
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132 pthread_t p_outthr;
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133
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134 /* The next hop-by-hop id value for the link, only read & modified by p_outthr */
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135 uint32_t p_hbh;
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136
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137 /* Sent requests (for fallback), list of struct sentreq ordered by hbh */
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138 struct fd_list p_sentreq;
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139
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140 /* connection context: socket, callbacks and so on */
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141 struct cnxctx *p_cnxctx;
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142
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143 /* Callback on initial connection success / failure */
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144 void (*p_cb)(struct peer_info *, void *);
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145 void *p_cb_data;
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146
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147 };
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148 #define CHECK_PEER( _p ) \
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149 (((_p) != NULL) && (((struct fd_peer *)(_p))->p_eyec == EYEC_PEER))
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150
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151 /* Events codespace for struct fd_peer->p_events */
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152 enum {
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153 /* Dump all info about this peer in the debug log */
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154 FDEVP_DUMP_ALL = 1500
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155
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156 /* request to terminate this peer : disconnect, requeue all messages */
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157 ,FDEVP_TERMINATE
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158
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159 /* A connection object has received a message. */
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160 ,FDEVP_CNX_MSG_RECV
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161
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162 /* A connection object has encountered an error (disconnected). */
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163 ,FDEVP_CNX_ERROR
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164
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165 /* Endpoints of a connection have been changed (multihomed SCTP). */
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166 ,FDEVP_CNX_EP_CHANGE
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167
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168 /* A message was received in the peer */
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169 ,FDEVP_MSG_INCOMING
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170
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171 /* The PSM state is expired */
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172 ,FDEVP_PSM_TIMEOUT
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173
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174 };
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175 const char * fd_pev_str(int event);
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176 #define CHECK_EVENT( _e ) \
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177 (((int)(_e) >= FDEVP_DUMP_ALL) && ((int)(_e) <= FDEVP_PSM_TIMEOUT))
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178
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179 /* Structure to store a sent request */
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180 struct sentreq {
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181 struct fd_list chain; /* the "o" field points directly to the hop-by-hop of the request (uint32_t *) */
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182 struct msg *req; /* A request that was sent and not yet answered. */
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183 };
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184
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185
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186 /* Functions */
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187 int fd_peer_fini();
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188 void fd_peer_dump_list(int details);
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189 void fd_peer_dump(struct fd_peer * peer, int details);
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190 int fd_peer_alloc(struct fd_peer ** ptr);
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191 int fd_peer_free(struct fd_peer ** ptr);
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192 /* fd_peer_add declared in freeDiameter.h */
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193
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194 /* Peer expiry */
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195 int fd_p_expi_init(void);
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196 int fd_p_expi_fini(void);
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197 int fd_p_expi_update(struct fd_peer * peer );
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198
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199 /* Peer state machine */
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200 int fd_psm_start();
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201 int fd_psm_begin(struct fd_peer * peer );
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202 int fd_psm_terminate(struct fd_peer * peer );
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203 void fd_psm_abord(struct fd_peer * peer );
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204
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205 /* Server sockets */
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206 void fd_servers_dump();
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207 int fd_servers_start();
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208 int fd_servers_stop();
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209
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210 /* Connection contexts */
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211 struct cnxctx * fd_cnx_serv_tcp(uint16_t port, int family, struct fd_endpoint * ep);
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212 struct cnxctx * fd_cnx_serv_sctp(uint16_t port, struct fd_list * ep_list);
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213 int fd_cnx_serv_listen(struct cnxctx * conn);
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214 struct cnxctx * fd_cnx_serv_accept(struct cnxctx * serv);
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215 struct cnxctx * fd_cnx_cli_connect_tcp(sSA * sa, socklen_t addrlen);
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216 struct cnxctx * fd_cnx_cli_connect_sctp(int no_ip6, uint16_t port, struct fd_list * list);
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217 char * fd_cnx_getid(struct cnxctx * conn);
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218 int fd_cnx_start_clear(struct cnxctx * conn, int loop);
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219 int fd_cnx_handshake(struct cnxctx * conn, int mode, char * priority);
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220 int fd_cnx_getcred(struct cnxctx * conn, const gnutls_datum_t **cert_list, unsigned int *cert_list_size);
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221 int fd_cnx_getendpoints(struct cnxctx * conn, struct fd_list * local, struct fd_list * remote);
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222 char * fd_cnx_getremoteid(struct cnxctx * conn);
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223 int fd_cnx_receive(struct cnxctx * conn, struct timespec * timeout, unsigned char **buf, size_t * len);
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224 int fd_cnx_recv_setaltfifo(struct cnxctx * conn, struct fifo * alt_fifo); /* send FDEVP_CNX_MSG_RECV event to the fifo list */
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225 int fd_cnx_send(struct cnxctx * conn, unsigned char * buf, size_t len);
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226 void fd_cnx_destroy(struct cnxctx * conn);
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227
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228
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229 #endif /* _FD_H */
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