#include "gnunet_scheduler_lib.h"
#include "gnunet_statistics_service.h"
#include "gnunet_transport_service.h"
+#include "gnunet_ats_service.h"
+
+#define TRANSPORT_SESSION_INBOUND_STRING "<inbound>"
/**
* Opaque pointer that plugins can use to distinguish specific
* useful since sometimes (i.e. for inbound TCP connections) a
* connection may not have an address that can be used for meaningful
* distinction between sessions to the same peer.
+ *
+ * Each 'struct Session' MUST start with the 'struct GNUNET_PeerIdentity'
+ * of the peer the session is for (which will be used for some error
+ * checking by the ATS code).
*/
struct Session;
*/
struct SessionHeader
{
-
- /**
- * Cached signature for PONG generation for the session. Do not use
- * in the plugin!
- */
- struct GNUNET_CRYPTO_RsaSignature pong_signature;
-
- /**
- * Expiration time for signature. Do not use in the plugin!
- */
- struct GNUNET_TIME_Absolute pong_sig_expires;
-
+ /* empty, for now */
};
/**
* cleans up a session pointer and hence the service needs to
* discard all of those sessions as well. Plugins that do not
* use sessions can simply omit calling this function and always
- * use NULL wherever a session pointer is needed.
- *
+ * use NULL wherever a session pointer is needed. This function
+ * should be called BEFORE a potential "TransmitContinuation"
+ * from the "TransmitFunction".
+ *
* @param cls closure
- * @param peer which peer was the session for
+ * @param peer which peer was the session for
* @param session which session is being destoyed
*/
typedef void (*GNUNET_TRANSPORT_SessionEnd) (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- struct Session *session);
+ const struct GNUNET_PeerIdentity *peer,
+ struct Session * session);
+
+/**
+ * Function that will be called whenever the plugin internally
+ * creates a new session and hence transport need to tell ATS.
+ * This happens when we have a inbound connection we did not
+ * initiate.
+ *
+ * @param cls closure
+ * @param peer peer
+ * @param plugin plugin
+ * @param address address
+ * @param address_len length of the address
+ * @param session session
+ * @param ats ATS information
+ * @param ats_count number of ATS information contained
+ */
+typedef void
+(*GNUNET_TRANSPORT_SessionStart) (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const char *plugin,
+ const void *address,
+ uint16_t address_len,
+ struct Session *session,
+ const struct GNUNET_ATS_Information *ats,
+ uint32_t ats_count);
/**
* Function called by the transport for each received message.
* @param cls closure
* @param peer (claimed) identity of the other peer
* @param message the message, NULL if we only care about
- * learning about the delay until we should receive again -- FIXME!
- * @param distance in overlay hops; use 1 unless DV (or 0 if message == NULL)
+ * learning about the delay until we should receive again
* @param session identifier used for this session (NULL for plugins
* that do not offer bi-directional communication to the sender
* using the same "connection")
* @return how long the plugin should wait until receiving more data
* (plugins that do not support this, can ignore the return value)
*/
-typedef struct GNUNET_TIME_Relative (*GNUNET_TRANSPORT_PluginReceiveCallback) (void *cls,
- const struct
- GNUNET_PeerIdentity *
- peer,
- const struct
- GNUNET_MessageHeader *
- message,
- const struct GNUNET_TRANSPORT_ATS_Information *ats,
- uint32_t ats_count,
- struct Session *session,
- const char *sender_address,
- uint16_t sender_address_len);
+typedef struct
+ GNUNET_TIME_Relative (*GNUNET_TRANSPORT_PluginReceiveCallback) (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_MessageHeader *message,
+ struct Session *session,
+ const char *sender_address,
+ uint16_t sender_address_len);
+/**
+ * Function that will be called to figure if an address is an loopback,
+ * LAN, WAN etc. address
+ *
+ * @param cls closure
+ * @param addr binary address
+ * @param addrlen length of the address
+ * @return ATS Information containing the network type
+ */
+typedef struct GNUNET_ATS_Information
+(*GNUNET_TRANSPORT_AddressToType) (void *cls,
+ const struct sockaddr *addr,
+ size_t addrlen);
+
+
+/**
+ * Function called when quality properties of an address change.
+ *
+ * @param cls closure
+ * @param peer peer
+ * @param address address
+ * @param address_len length of the address
+ * @param session session
+ * @param ats ATS information
+ * @param ats_count number of ATS information contained
+ */
+typedef void
+(*GNUNET_TRANSPORT_UpdateAddressMetrics) (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const void *address,
+ uint16_t address_len,
+ struct Session *session,
+ const struct GNUNET_ATS_Information *ats,
+ uint32_t ats_count);
+
/**
* Function that will be called for each address the transport
* is aware that it might be reachable under.
* @param addr one of the addresses of the host
* the specific address format depends on the transport
* @param addrlen length of the address
+ * @param dest_plugin plugin to use this address with
*/
typedef void (*GNUNET_TRANSPORT_AddressNotification) (void *cls,
- int add_remove,
+ int add_remove,
const void *addr,
- size_t addrlen);
+ size_t addrlen,
+ const char *dest_plugin);
/**
* (to enforce inbound quotas)
*/
typedef struct GNUNET_TIME_Relative (*GNUNET_TRANSPORT_TrafficReport) (void *cls,
- const struct
- GNUNET_PeerIdentity *peer,
- size_t amount_recved);
-
-
-/**
- * Function called whenever the plugin has to notify ATS about costs for using this transport
- *
- * The cost will be passed as struct GNUNET_TRANSPORT_ATS_Cost_Information[]
- * This array is 0-terminated, so the last element will be a pair:
- * ((cost->cost_type==GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR) && cost->cost_value==0))
- *
- * @param cls closure
- * @param peer peer
- * @param addr peer address
- * @param addrlen address length
- * @param cost pointer to the first element of struct GNUNET_TRANSPORT_ATS_Cost_Information[]
- */
-typedef void (*GNUNET_TRANSPORT_CostReport) (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- const void *addr,
- uint16_t addrlen,
- struct GNUNET_TRANSPORT_ATS_Information * cost);
+ const struct GNUNET_PeerIdentity* peer,
+ size_t amount_recved);
/**
* Function that returns a HELLO message.
- */
-typedef const struct GNUNET_MessageHeader * (*GNUNET_TRANSPORT_GetHelloCallback)(void);
+ */
+typedef const struct GNUNET_MessageHeader *
+ (*GNUNET_TRANSPORT_GetHelloCallback) (void);
/**
/**
* Function that should be called by the transport plugin
- * whenever a message is received.
+ * whenever a message is received. If this field is "NULL",
+ * the plugin should load in 'stub' mode and NOT fully
+ * initialize and instead only return an API with the
+ * 'address_pretty_printer', 'address_to_string' and
+ * 'string_to_address' functions.
*/
GNUNET_TRANSPORT_PluginReceiveCallback receive;
*/
GNUNET_TRANSPORT_AddressNotification notify_address;
- /**
- * Inform service about traffic received, get information
- * about when we might be willing to receive more.
- */
- GNUNET_TRANSPORT_TrafficReport traffic_report;
-
/**
* Function that must be called by the plugin when a non-NULL
* session handle stops being valid (is destroyed).
GNUNET_TRANSPORT_SessionEnd session_end;
/**
- * Inform service about costs for using this transport plugin
+ * Function called by the plugin when a new (incoming) session was created
+ * not explicitly created using the the get_session function
*/
- GNUNET_TRANSPORT_CostReport cost_report;
+ GNUNET_TRANSPORT_SessionStart session_start;
+
+ /**
+ * Function that will be called to figure if an address is an loopback,
+ * LAN, WAN etc. address
+ */
+ GNUNET_TRANSPORT_AddressToType get_address_type;
+
+ /**
+ * Function that will be called to figure if an address is an loopback,
+ * LAN, WAN etc. address
+ */
+ GNUNET_TRANSPORT_UpdateAddressMetrics update_address_metrics;
+
/**
* What is the maximum number of connections that this transport
* GNUNET_SYSERR if the target disconnected;
* disconnect will ALSO be signalled using
* the ReceiveCallback.
+ * @param size_payload bytes of payload from transport service in message
+ * @param size_on_wire bytes required on wire for transmission,
+ * 0 if result == GNUNET_SYSERR
*/
-typedef void
- (*GNUNET_TRANSPORT_TransmitContinuation) (void *cls,
- const struct GNUNET_PeerIdentity *
- target, int result);
-
+typedef void (*GNUNET_TRANSPORT_TransmitContinuation) (void *cls,
+ const struct GNUNET_PeerIdentity *target,
+ int result,
+ size_t size_payload,
+ size_t size_on_wire);
/**
+ * The new send function with just the session and no address
+ *
* Function that can be used by the transport service to transmit
* a message using the plugin. Note that in the case of a
* peer disconnecting, the continuation MUST be called
* a fresh connection to another peer.
*
* @param cls closure
- * @param target who should receive this message
+ * @param session which session must be used
* @param msgbuf the message to transmit
* @param msgbuf_size number of bytes in 'msgbuf'
* @param priority how important is the message (most plugins will
* ignore message priority and just FIFO)
- * @param timeout how long to wait at most for the transmission (does not
+ * @param to how long to wait at most for the transmission (does not
* require plugins to discard the message after the timeout,
* just advisory for the desired delay; most plugins will ignore
* this as well)
- * @param session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * GNUNET_NO means the plugin may use any other address and
- * GNUNET_SYSERR means that only reliable existing
- * bi-directional connections should be used (regardless
- * of address)
* @param cont continuation to call once the message has
* been transmitted (or if the transport is ready
* for the next transmission call; or if the
* -1 on hard errors (i.e. address invalid); 0 is a legal value
* and does NOT mean that the message was not transmitted (DV)
*/
-typedef ssize_t
- (*GNUNET_TRANSPORT_TransmitFunction) (void *cls,
- const struct GNUNET_PeerIdentity *
- target,
- const char *msgbuf,
- size_t msgbuf_size,
- uint32_t priority,
- struct GNUNET_TIME_Relative timeout,
- struct Session *session,
- const void *addr,
- size_t addrlen,
- int force_address,
- GNUNET_TRANSPORT_TransmitContinuation
- cont, void *cont_cls);
+typedef ssize_t (*GNUNET_TRANSPORT_TransmitFunction) (void *cls,
+ struct Session *session,
+ const char *msgbuf,
+ size_t msgbuf_size,
+ unsigned int priority,
+ struct GNUNET_TIME_Relative to,
+ GNUNET_TRANSPORT_TransmitContinuation cont,
+ void *cont_cls);
/**
* @param target peer for which the last transmission is
* to be cancelled
*/
-typedef void
- (*GNUNET_TRANSPORT_DisconnectFunction) (void *cls,
- const struct GNUNET_PeerIdentity *
- target);
+typedef void (*GNUNET_TRANSPORT_DisconnectFunction) (void *cls,
+ const struct GNUNET_PeerIdentity *target);
/**
* each human-readable address obtained.
*
* @param cls closure
- * @param hostname one of the names for the host, NULL
+ * @param address one of the names for the host, NULL
* on the last call to the callback
*/
typedef void (*GNUNET_TRANSPORT_AddressStringCallback) (void *cls,
* format.
*
* @param cls closure
- * @param name name of the transport that generated the address
+ * @param type name of the transport that generated the address
* @param addr one of the addresses of the host, NULL for the last address
* the specific address format depends on the transport
* @param addrlen length of the address
* @param asc function to call on each string
* @param asc_cls closure for asc
*/
-typedef void
- (*GNUNET_TRANSPORT_AddressPrettyPrinter) (void *cls,
- const char *type,
- const void *addr,
- size_t addrlen,
- int numeric,
- struct GNUNET_TIME_Relative
- timeout,
- GNUNET_TRANSPORT_AddressStringCallback
- asc, void *asc_cls);
+typedef void (*GNUNET_TRANSPORT_AddressPrettyPrinter) (void *cls,
+ const char *type,
+ const void *addr,
+ size_t addrlen,
+ int numeric,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TRANSPORT_AddressStringCallback asc,
+ void *asc_cls);
/**
* @return GNUNET_OK if this is a plausible address for this peer
* and transport, GNUNET_SYSERR if not
*/
-typedef int
-(*GNUNET_TRANSPORT_CheckAddress) (void *cls,
- const void *addr, size_t addrlen);
+typedef int (*GNUNET_TRANSPORT_CheckAddress) (void *cls,
+ const void *addr,
+ size_t addrlen);
+
+/**
+ * Create a new session to transmit data to the target
+ * This session will used to send data to this peer and the plugin will
+ * notify us by calling the env->session_end function
+ *
+ * @param cls the plugin
+ * @param address the hello address
+ * @return the session if the address is valid, NULL otherwise
+ */
+typedef struct Session * (*GNUNET_TRANSPORT_CreateSession) (void *cls,
+ const struct GNUNET_HELLO_Address *address);
/**
* Function called for a quick conversion of the binary address to
- * a numeric address. Note that the caller must not free the
+ * a numeric address. Note that the caller must not free the
* address and that the next call to this function is allowed
* to override the address again.
*
* @param cls closure
* @param addr binary address
* @param addr_len length of the address
- * @return string representing the same address
+ * @return string representing the same address
+ */
+typedef const char *(*GNUNET_TRANSPORT_AddressToString) (void *cls,
+ const void *addr,
+ size_t addrlen);
+
+/**
+ * Function called to convert a string address to
+ * a binary address.
+ *
+ * @param cls closure ('struct Plugin*')
+ * @param addr string address
+ * @param addrlen length of the address including \0 termination
+ * @param buf location to store the buffer
+ * If the function returns GNUNET_SYSERR, its contents are undefined.
+ * @param added length of created address
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
*/
-typedef const char* (*GNUNET_TRANSPORT_AddressToString) (void *cls,
- const void *addr,
- size_t addrlen);
+typedef int (*GNUNET_TRANSPORT_StringToAddress) (void *cls,
+ const char *addr,
+ uint16_t addrlen,
+ void **buf,
+ size_t *added);
+
+
+/**
+ * Function to obtain the network type for a session
+ *
+ * @param cls closure ('struct Plugin*')
+ * @param session the session
+ * @return the network type
+ */
+typedef enum GNUNET_ATS_Network_Type (*GNUNET_TRANSPORT_GetNetworkType) (void *cls,
+ struct Session *session);
/**
/**
* Function that can be used to force the plugin to disconnect from
* the given peer and cancel all previous transmissions (and their
- * continuations).
+ * continuations).
*/
GNUNET_TRANSPORT_DisconnectFunction disconnect;
*/
GNUNET_TRANSPORT_AddressToString address_to_string;
+ /**
+ * Function that will be called to convert a string address
+ * to binary (numeric conversion only).
+ */
+ GNUNET_TRANSPORT_StringToAddress string_to_address;
+
+ /**
+ * Function that will be called tell the plugin to create a session
+ * object
+ */
+ GNUNET_TRANSPORT_CreateSession get_session;
+
+ /**
+ * Function to obtain the network type for a session
+ */
+ GNUNET_TRANSPORT_GetNetworkType get_network;
};
projects / oweals / gnunet.git / blobdiff