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20 * @file transport/transport_api_offer_hello.c
21 * @brief library to offer HELLOs to transport service
22 * @author Christian Grothoff
25 #include "gnunet_util_lib.h"
26 #include "gnunet_hello_lib.h"
27 #include "gnunet_protocols.h"
28 #include "gnunet_transport_service.h"
32 * Entry in linked list for all offer-HELLO requests.
34 struct GNUNET_TRANSPORT_OfferHelloHandle
38 * Transport service handle we use for transmission.
40 struct GNUNET_MQ_Handle *mq;
43 * Function to call once we are done.
45 GNUNET_SCHEDULER_TaskCallback cont;
56 * Done sending HELLO message to the service, notify application.
58 * @param cls the handle for the operation
61 finished_hello (void *cls)
63 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh = cls;
65 if (NULL != ohh->cont)
67 GNUNET_TRANSPORT_offer_hello_cancel (ohh);
72 * Offer the transport service the HELLO of another peer. Note that
73 * the transport service may just ignore this message if the HELLO is
74 * malformed or useless due to our local configuration.
76 * @param cfg configuration
77 * @param hello the hello message
78 * @param cont continuation to call when HELLO has been sent,
79 * tc reason #GNUNET_SCHEDULER_REASON_TIMEOUT for fail
80 * tc reasong #GNUNET_SCHEDULER_REASON_READ_READY for success
81 * @param cont_cls closure for @a cont
82 * @return a `struct GNUNET_TRANSPORT_OfferHelloHandle` handle or NULL on failure,
83 * in case of failure @a cont will not be called
86 struct GNUNET_TRANSPORT_OfferHelloHandle *
87 GNUNET_TRANSPORT_offer_hello (const struct GNUNET_CONFIGURATION_Handle *cfg,
88 const struct GNUNET_MessageHeader *hello,
89 GNUNET_SCHEDULER_TaskCallback cont,
92 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh
93 = GNUNET_new (struct GNUNET_TRANSPORT_OfferHelloHandle);
94 struct GNUNET_MQ_Envelope *env;
95 struct GNUNET_PeerIdentity peer;
98 GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) hello,
105 ohh->mq = GNUNET_CLIENT_connect (cfg,
117 GNUNET_break (ntohs (hello->type) == GNUNET_MESSAGE_TYPE_HELLO);
118 env = GNUNET_MQ_msg_copy (hello);
119 GNUNET_MQ_notify_sent (env,
122 GNUNET_MQ_send (ohh->mq,
129 * Cancel the request to transport to offer the HELLO message
131 * @param ohh the handle for the operation to cancel
134 GNUNET_TRANSPORT_offer_hello_cancel (struct GNUNET_TRANSPORT_OfferHelloHandle *ohh)
136 GNUNET_MQ_destroy (ohh->mq);
141 /* end of transport_api_offer_hello.c */