X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Finclude%2Fgnunet_transport_service.h;h=564b8da248c00810532205749b5bd398324a5b36;hb=c95ddb3eac0292511af734768441444098b90be9;hp=9a7093a103f0104e76335eb17c2ccbe268df7256;hpb=8a3016481ba6aeb36de3950a56e641dda53ca544;p=oweals%2Fgnunet.git diff --git a/src/include/gnunet_transport_service.h b/src/include/gnunet_transport_service.h index 9a7093a10..564b8da24 100644 --- a/src/include/gnunet_transport_service.h +++ b/src/include/gnunet_transport_service.h @@ -1,6 +1,6 @@ /* This file is part of GNUnet. - (C) 2009 Christian Grothoff (and other contributing authors) + (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors) GNUnet is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published @@ -35,12 +35,8 @@ extern "C" #endif #endif -#include "gnunet_bandwidth_lib.h" -#include "gnunet_configuration_lib.h" -#include "gnunet_crypto_lib.h" -#include "gnunet_connection_lib.h" -#include "gnunet_scheduler_lib.h" -#include "gnunet_time_lib.h" +#include "gnunet_util_lib.h" +#include "gnunet_ats_service.h" /** * Version number of the transport API. @@ -48,350 +44,6 @@ extern "C" #define GNUNET_TRANSPORT_VERSION 0x00000000 -/** - * Enum defining all known property types for ATS Enum values are used - * in the GNUNET_TRANSPORT_ATS_Information struct as - * (key,value)-pairs. - * - * Cost are always stored in uint32_t, so all units used to define costs - * have to be normalized to fit in uint32_t [0 .. 4.294.967.295] - * - * To keep the elements ordered - * 1..1024 : Values with a relation to cost - * 1025..2048 : Values with a relation to quality - * 2049..3072 : Values with a relation to availability - * - */ -enum GNUNET_TRANSPORT_ATS_Property -{ - - /** - * End of the array. - */ - GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR = 0, - - /* Cost related values */ - /* =================== */ - - /** - * Volume based cost in financial units to transmit data - * - * Note: This value is not bound to a specific currency or unit and only - * used locally. - * "cent" just refers the smallest amount of money in the respective - * currency. - * - * Unit: [cent/MB] - * - * Interpretation: less is better - * - * Examples: - * LAN: 0 [cent/MB] - * 2G : 10 [cent/MB] - */ - GNUNET_TRANSPORT_ATS_COST_FINANCIAL_PER_VOLUME = 1, - - /** - * Time based cost in financial units to transmit data - * - * Note: This value is not bound to a specific currency or unit and only - * used locally. - * "cent" just refers the smallest amount of money in the respective - * currency. - * - * Unit: [cent/h] - * - * Interpretation: less is better - * - * Examples: - * LAN : 0 [cent/h] - * Dialup: 10 [cent/h] - */ - GNUNET_TRANSPORT_ATS_COST_FINANCIAL_PER_TIME = 2, - - /** - * Computational costs - * - * Effort of preparing data to be sent with this transport - * Includes encoding, encryption and conversion of data - * Partial values can be summed up: c_sum = c_enc + c_enc + c_conv - * Resulting values depend on local system properties, e.g. CPU - * - * Unit: [ms/GB] - * - * Interpretation: less is better - * - * Examples: - * - * HTTPS with AES CBC-256: 7,382 - * HTTPS with AES CBC-128: 5,279 - * HTTPS with RC4-1024: 2,652 - */ - GNUNET_TRANSPORT_ATS_COST_COMPUTATIONAL = 3, - - /** - * Energy consumption - * - * Energy consumption using this transport when sending with a certain - * power at a certain bitrate. This is only an approximation based on: - * Energy consumption E = P / D - * - * with: - * Power P in Watt (J/s) - * Datarate D in MBit/s - * - * Conversion between power P and dBm used by WLAN in radiotap's dBm TX power: - * - * Lp(dbm) = 10 log10 (P/ 1mW) - * - * => P = 1 mW * 10^(Lp(dbm)/10) - * - * Unit: [mJ/MB] - * - * Interpretation: less is better - * - * Examples: - * - * LAN: 0 - * WLAN: 89 (600 mW @ 802.11g /w 54 MBit/s) - * Bluetooth: 267 (100 mW @ BT2.0 EDR /w 3 MBit/s) - */ - GNUNET_TRANSPORT_ATS_COST_ENERGY_CONSUMPTION = 4, - - /** - * Connect cost - * How many bytes are transmitted to initiate a new connection using - * this transport? - * - * Unit: [bytes] - * - * Interpretation: less is better - * - * Examples: - * - * UDP (No connection) : - * 0 bytes - * TCP (TCP 3-Way handshake): - * 220 bytes Ethernet, 172 bytes TCP/IP, 122 bytes TCP - * HTTP (TCP + Header) : - * 477 bytes Ethernet, 429 bytes TCP/IP, 374 bytes TCP, 278 bytes HTTP - * HTTPS HTTP+TLS Handshake: - * 2129 bytes Ethernet, 1975 bytes TCP/IP, 1755 bytes TCP, 1403 bytes HTTPS - * - * */ - GNUNET_TRANSPORT_ATS_COST_CONNECT = 5, - - /** - * Bandwidth cost - * - * How many bandwidth is available to consume? - * Used to calculate which impact sending data with this transport has - * - * Unit: [kB/s] - * - * Interpretation: more is better - * - * Examples: - * LAN: 12,800 (100 MBit/s) - * WLAN: 6,912 (54 MBit/s) - * Dial-up: 8 (64 Kbit/s) - * - */ - GNUNET_TRANSPORT_ATS_COST_BANDWITH_AVAILABLE = 6, - - /** - * Network overhead - * - * How many bytes are sent over the wire when 1 kilobyte (1024 bytes) - * of application data is transmitted? - * A factor used with connect cost, bandwidth cost and energy cost - * to describe the overhead produced by the transport protocol - * - * Unit: [bytes/kb] - * - * Interpretation: less is better - * - * Examples: - * - * TCP/IPv4 over Ethernet: 1024 + 38 + 20 + 20 = 1102 [bytes/kb] - * TCP/IPv6 over Ethernet: 1024 + 38 + 20 + 40 = 1122 [bytes/kb] - * UDP/IPv4 over Ethernet: 1024 + 38 + 20 + 8 = 1090 [bytes/kb] - * UDP/IPv6 over Ethernet: 1024 + 38 + 40 + 8 = 1110 [bytes/kb] - */ - GNUNET_TRANSPORT_ATS_COST_NETWORK_OVERHEAD = 7, - - - /* Quality related values */ - /* ====================== */ - - /* Physical layer quality properties */ - - /** - * Signal strength on physical layer - * - * Unit: [dBm] - */ - GNUNET_TRANSPORT_ATS_QUALITY_PHY_SIGNAL_STRENGTH = 1025, - - /** - * Collision rate on physical layer - * - * Unit: [B/s] - */ - GNUNET_TRANSPORT_ATS_QUALITY_PHY_COLLISION_RATE = 1026, - - /** - * Error rate on physical layer - * - * Unit: [B/s] - */ - GNUNET_TRANSPORT_ATS_QUALITY_PHY_ERROR_RATE = 1027, - - /* Network layer quality properties */ - - /** - * Delay - * Time between when the time packet is sent and the packet arrives - * - * Unit: [ms] - * - * Examples: - * - * LAN : 1 - * WLAN : 2 - * Dialup: 500 - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_DELAY = 1028, - - /** - * Jitter - * Time variations of the delay - * 1st derivative of a delay function - * - * Unit: [ms] - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_JITTER = 1029, - - /** - * Error rate on network layer - * - * Unit: [B/s] - * - * Examples: - * - * LAN : 0 - * WLAN : 400 - * Bluetooth : 100 - * Note: This numbers are just assumptions as an example, not - * measured or somehow determined - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_ERRORRATE = 1030, - - /** - * Drop rate on network layer - * Bytes actively dismissed by a network component during transmission - * Reasons for dropped data can be full queues, congestion, quota violations... - * - * Unit: [B/s] - * - * Examples: - * - * LAN : 0 - * WLAN : 400 - * Bluetooth : 100 - * Note: This numbers are just assumptions as an example, not - * measured or somehow determined - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_DROPRATE = 1031, - - /** - * Loss rate on network layer - * Bytes lost during transmission - * Reasons can be collisions, ... - * - * Unit: [B/s] - * - * Examples: - * - * LAN : 0 - * WLAN : 40 - * Bluetooth : 10 - * Note: This numbers are just assumptions as an example, not measured - * or somehow determined - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_LOSSRATE = 1032, - - /** - * Throughput on network layer - * - * Unit: [kB/s] - * - * Examples: - * - * LAN : 3400 - * WLAN : 1200 - * Dialup: 4 - * - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_THROUGHPUT = 1033, - - /** - * Distance on network layer - * - * Unit: [] - */ - GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE = 1034, - - - /* Availability related values */ - /* =========================== */ - - /** - * Is a peer reachable? - */ - GNUNET_TRANSPORT_ATS_AVAILABILITY_REACHABLE = 2048, - - /** - * Is there a connection established to a peer using this transport - */ - GNUNET_TRANSPORT_ATS_AVAILABILITY_CONNECTED = 2049 - -}; - - -/** - * struct used to communicate the transport's properties like cost and - * quality of service as well as high-level constraints on resource - * consumption. - * - * +---+ - * +-----------+ Constraints | | Plugin properties +---------+ - * | Highlevel |------------> |ATS| <------------------|Transport| - * | Component | ATS struct | | ATS struct | Plugin | - * +-----------+ | | +---------+ - * +---+ - * - * This structure will be used by transport plugins to communicate - * costs to ATS or by higher level components to tell ATS their - * constraints. Always a pair of (GNUNET_TRANSPORT_ATS_Property, - * uint32_t value). Value is always uint32_t, so all units used to - * define costs have to be normalized to fit uint32_t. - */ -struct GNUNET_TRANSPORT_ATS_Information -{ - /** - * ATS property type, in network byte order. - */ - uint32_t type; - - /** - * ATS property value, in network byte order. - */ - uint32_t value; -}; - - - /** * Function called by the transport for each received message. * @@ -399,7 +51,7 @@ struct GNUNET_TRANSPORT_ATS_Information * @param peer (claimed) identity of the other peer * @param message the message * @param ats performance data - * @param ats_count number of entries in ats (excluding 0-termination) + * @param ats_count number of entries in ats */ typedef void (*GNUNET_TRANSPORT_ReceiveCallback) (void *cls, const struct @@ -407,7 +59,8 @@ typedef void (*GNUNET_TRANSPORT_ReceiveCallback) (void *cls, const struct GNUNET_MessageHeader * message, - const struct GNUNET_TRANSPORT_ATS_Information *ats, + const struct + GNUNET_ATS_Information * ats, uint32_t ats_count); @@ -426,11 +79,12 @@ struct GNUNET_TRANSPORT_Handle; * @param ats performance data * @param ats_count number of entries in ats (excluding 0-termination) */ -typedef void - (*GNUNET_TRANSPORT_NotifyConnect) (void *cls, - const struct GNUNET_PeerIdentity * peer, - const struct GNUNET_TRANSPORT_ATS_Information *ats, - uint32_t ats_count); +typedef void (*GNUNET_TRANSPORT_NotifyConnect) (void *cls, + const struct GNUNET_PeerIdentity + * peer, + const struct + GNUNET_ATS_Information * ats, + uint32_t ats_count); /** * Function called to notify transport users that another @@ -439,21 +93,39 @@ typedef void * @param cls closure * @param peer the peer that disconnected */ -typedef void - (*GNUNET_TRANSPORT_NotifyDisconnect) (void *cls, - const struct GNUNET_PeerIdentity * - peer); +typedef void (*GNUNET_TRANSPORT_NotifyDisconnect) (void *cls, + const struct + GNUNET_PeerIdentity * peer); + + +/** + * Function to call with a textual representation of an address. + * This function will be called several times with different possible + * textual representations, and a last time with NULL to signal the end + * of the iteration. + * + * @param cls closure + * @param address NULL on error or end of iteration, + * otherwise 0-terminated printable UTF-8 string + */ +typedef void (*GNUNET_TRANSPORT_AddressToStringCallback) (void *cls, + const char *address); /** - * Function to call with a human-readable format of an address + * Function to call with a binary format of an address * * @param cls closure - * @param address NULL on error, otherwise 0-terminated printable UTF-8 string + * @param peer peer this update is about (never NULL) + * @param address address, NULL for disconnect notification in monitor mode */ -typedef void -(*GNUNET_TRANSPORT_AddressLookUpCallback) (void *cls, - const char *address); +typedef void (*GNUNET_TRANSPORT_PeerIterateCallback) (void *cls, + const struct + GNUNET_PeerIdentity * + peer, + const struct + GNUNET_HELLO_Address * + address); /** @@ -469,17 +141,12 @@ typedef void * @param nd function to call on disconnect events * @return NULL on error */ -struct GNUNET_TRANSPORT_Handle *GNUNET_TRANSPORT_connect (const struct - GNUNET_CONFIGURATION_Handle - *cfg, - const struct GNUNET_PeerIdentity *self, - void *cls, - GNUNET_TRANSPORT_ReceiveCallback - rec, - GNUNET_TRANSPORT_NotifyConnect - nc, - GNUNET_TRANSPORT_NotifyDisconnect - nd); +struct GNUNET_TRANSPORT_Handle * +GNUNET_TRANSPORT_connect (const struct GNUNET_CONFIGURATION_Handle *cfg, + const struct GNUNET_PeerIdentity *self, void *cls, + GNUNET_TRANSPORT_ReceiveCallback rec, + GNUNET_TRANSPORT_NotifyConnect nc, + GNUNET_TRANSPORT_NotifyDisconnect nd); /** @@ -487,11 +154,12 @@ struct GNUNET_TRANSPORT_Handle *GNUNET_TRANSPORT_connect (const struct * * @param handle handle returned from connect */ -void GNUNET_TRANSPORT_disconnect (struct GNUNET_TRANSPORT_Handle *handle); +void +GNUNET_TRANSPORT_disconnect (struct GNUNET_TRANSPORT_Handle *handle); /** - * Ask the transport service to establish a connection to + * Ask the transport service to establish a connection to * the given peer. * * @param handle connection to transport service @@ -499,23 +167,7 @@ void GNUNET_TRANSPORT_disconnect (struct GNUNET_TRANSPORT_Handle *handle); */ void GNUNET_TRANSPORT_try_connect (struct GNUNET_TRANSPORT_Handle *handle, - const struct GNUNET_PeerIdentity *target); - - -/** - * Set the share of incoming/outgoing bandwidth for the given - * peer to the specified amount. - * - * @param handle connection to transport service - * @param target who's bandwidth quota is being changed - * @param quota_in incoming bandwidth quota - * @param quota_out outgoing bandwidth quota - */ -void -GNUNET_TRANSPORT_set_quota (struct GNUNET_TRANSPORT_Handle *handle, - const struct GNUNET_PeerIdentity *target, - struct GNUNET_BANDWIDTH_Value32NBO quota_in, - struct GNUNET_BANDWIDTH_Value32NBO quota_out); + const struct GNUNET_PeerIdentity *target); /** @@ -533,7 +185,7 @@ struct GNUNET_TRANSPORT_TransmitHandle; * @param handle connection to transport service * @param target who should receive the message * @param size how big is the message we want to transmit? - * @param priority how important is the message? + * @param priority how important is the message? @deprecated - remove? * @param timeout after how long should we give up (and call * notify with buf NULL and size 0)? * @param notify function to call when we are ready to @@ -543,16 +195,13 @@ struct GNUNET_TRANSPORT_TransmitHandle; * non-NULL if the notify callback was queued (can be used to cancel * using GNUNET_TRANSPORT_notify_transmit_ready_cancel) */ -struct GNUNET_TRANSPORT_TransmitHandle - *GNUNET_TRANSPORT_notify_transmit_ready (struct GNUNET_TRANSPORT_Handle - *handle, - const struct GNUNET_PeerIdentity - *target, size_t size, - uint32_t priority, - struct GNUNET_TIME_Relative - timeout, - GNUNET_CONNECTION_TransmitReadyNotify - notify, void *notify_cls); +struct GNUNET_TRANSPORT_TransmitHandle * +GNUNET_TRANSPORT_notify_transmit_ready (struct GNUNET_TRANSPORT_Handle *handle, + const struct GNUNET_PeerIdentity + *target, size_t size, uint32_t priority, + struct GNUNET_TIME_Relative timeout, + GNUNET_CONNECTION_TransmitReadyNotify + notify, void *notify_cls); /** @@ -574,8 +223,16 @@ GNUNET_TRANSPORT_notify_transmit_ready_cancel (struct * @param cls closure * @param hello our updated HELLO */ -typedef void (*GNUNET_TRANSPORT_HelloUpdateCallback)(void *cls, - const struct GNUNET_MessageHeader *hello); +typedef void (*GNUNET_TRANSPORT_HelloUpdateCallback) (void *cls, + const struct + GNUNET_MessageHeader * + hello); + + +/** + * Handle to cancel a 'GNUNET_TRANSPORT_get_hello' operation. + */ +struct GNUNET_TRANSPORT_GetHelloHandle; /** @@ -584,8 +241,9 @@ typedef void (*GNUNET_TRANSPORT_HelloUpdateCallback)(void *cls, * @param handle connection to transport service * @param rec function to call with the HELLO * @param rec_cls closure for rec + * @return handle to cancel the operation */ -void +struct GNUNET_TRANSPORT_GetHelloHandle * GNUNET_TRANSPORT_get_hello (struct GNUNET_TRANSPORT_Handle *handle, GNUNET_TRANSPORT_HelloUpdateCallback rec, void *rec_cls); @@ -594,14 +252,10 @@ GNUNET_TRANSPORT_get_hello (struct GNUNET_TRANSPORT_Handle *handle, /** * Stop receiving updates about changes to our HELLO message. * - * @param handle connection to transport service - * @param rec function previously registered to be called with the HELLOs - * @param rec_cls closure for rec + * @param ghh handle returned from 'GNUNET_TRANSPORT_get_hello') */ void -GNUNET_TRANSPORT_get_hello_cancel (struct GNUNET_TRANSPORT_Handle *handle, - GNUNET_TRANSPORT_HelloUpdateCallback rec, - void *rec_cls); +GNUNET_TRANSPORT_get_hello_cancel (struct GNUNET_TRANSPORT_GetHelloHandle *ghh); /** @@ -613,13 +267,17 @@ GNUNET_TRANSPORT_get_hello_cancel (struct GNUNET_TRANSPORT_Handle *handle, * @param hello the hello message * @param cont continuation to call when HELLO has been sent * @param cls closure for continuation - * */ void GNUNET_TRANSPORT_offer_hello (struct GNUNET_TRANSPORT_Handle *handle, const struct GNUNET_MessageHeader *hello, - GNUNET_SCHEDULER_Task cont, - void *cls); + GNUNET_SCHEDULER_Task cont, void *cls); + + +/** + * Handle to cancel a pending address lookup. + */ +struct GNUNET_TRANSPORT_AddressToStringContext; /** @@ -627,25 +285,72 @@ GNUNET_TRANSPORT_offer_hello (struct GNUNET_TRANSPORT_Handle *handle, * * @param cfg configuration to use * @param address address to convert (binary format) - * @param addressLen number of bytes in address - * @param numeric should (IP) addresses be displayed in numeric form + * @param numeric should (IP) addresses be displayed in numeric form * (otherwise do reverse DNS lookup) - * @param nameTrans name of the transport to which the address belongs * @param timeout how long is the lookup allowed to take at most * @param aluc function to call with the results * @param aluc_cls closure for aluc + * @return handle to cancel the operation, NULL on error + */ +struct GNUNET_TRANSPORT_AddressToStringContext * +GNUNET_TRANSPORT_address_to_string (const struct GNUNET_CONFIGURATION_Handle + *cfg, + const struct GNUNET_HELLO_Address *address, + int numeric, + struct GNUNET_TIME_Relative timeout, + GNUNET_TRANSPORT_AddressToStringCallback + aluc, void *aluc_cls); + + +/** + * Cancel request for address conversion. + * + * @param alc handle for the request to cancel */ void -GNUNET_TRANSPORT_address_lookup (const struct GNUNET_CONFIGURATION_Handle *cfg, - const char * address, - size_t addressLen, - int numeric, - const char * nameTrans, - struct GNUNET_TIME_Relative timeout, - GNUNET_TRANSPORT_AddressLookUpCallback aluc, - void *aluc_cls); +GNUNET_TRANSPORT_address_to_string_cancel (struct + GNUNET_TRANSPORT_AddressToStringContext + *alc); +/** + * Return all the known addresses for a specific peer or all peers. + * Returns continuously all address if one_shot is set to GNUNET_NO + * + * CHANGE: Returns the address(es) that we are currently using for this + * peer. Upon completion, the 'AddressLookUpCallback' is called one more + * time with 'NULL' for the address and the peer. After this, the operation must no + * longer be explicitly cancelled. + * + * @param cfg configuration to use + * @param peer peer identity to look up the addresses of, CHANGE: allow NULL for all (connected) peers + * @param one_shot GNUNET_YES to return the current state and then end (with NULL+NULL), + * GNUNET_NO to monitor the set of addresses used (continuously, must be explicitly canceled, NOT implemented yet!) + * @param timeout how long is the lookup allowed to take at most + * @param peer_address_callback function to call with the results + * @param peer_address_callback_cls closure for peer_address_callback + */ +struct GNUNET_TRANSPORT_PeerIterateContext * +GNUNET_TRANSPORT_peer_get_active_addresses (const struct + GNUNET_CONFIGURATION_Handle *cfg, + const struct GNUNET_PeerIdentity + *peer, int one_shot, + struct GNUNET_TIME_Relative timeout, + GNUNET_TRANSPORT_PeerIterateCallback + peer_address_callback, + void *peer_address_callback_cls); + + +/** + * Cancel request for peer lookup. + * + * @param alc handle for the request to cancel + */ +void +GNUNET_TRANSPORT_peer_get_active_addresses_cancel (struct + GNUNET_TRANSPORT_PeerIterateContext + *alc); + /** * Handle for blacklisting peers. @@ -658,10 +363,11 @@ struct GNUNET_TRANSPORT_Blacklist; * * @param cls closure * @param pid peer to approve or disapproave - * @return GNUNET_OK if the connection is allowed + * @return GNUNET_OK if the connection is allowed, GNUNET_SYSERR if not */ -typedef int (*GNUNET_TRANSPORT_BlacklistCallback)(void *cls, - const struct GNUNET_PeerIdentity *pid); +typedef int (*GNUNET_TRANSPORT_BlacklistCallback) (void *cls, + const struct + GNUNET_PeerIdentity * pid); /** @@ -680,8 +386,8 @@ typedef int (*GNUNET_TRANSPORT_BlacklistCallback)(void *cls, */ struct GNUNET_TRANSPORT_Blacklist * GNUNET_TRANSPORT_blacklist (const struct GNUNET_CONFIGURATION_Handle *cfg, - GNUNET_TRANSPORT_BlacklistCallback cb, - void *cb_cls); + GNUNET_TRANSPORT_BlacklistCallback cb, + void *cb_cls); /**