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17 * @file transport/transport_api_offer_hello.c
18 * @brief library to offer HELLOs to transport service
19 * @author Christian Grothoff
22 #include "gnunet_util_lib.h"
23 #include "gnunet_hello_lib.h"
24 #include "gnunet_protocols.h"
25 #include "gnunet_transport_service.h"
29 * Entry in linked list for all offer-HELLO requests.
31 struct GNUNET_TRANSPORT_OfferHelloHandle
35 * Transport service handle we use for transmission.
37 struct GNUNET_MQ_Handle *mq;
40 * Function to call once we are done.
42 GNUNET_SCHEDULER_TaskCallback cont;
53 * Done sending HELLO message to the service, notify application.
55 * @param cls the handle for the operation
58 finished_hello (void *cls)
60 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh = cls;
62 if (NULL != ohh->cont)
64 GNUNET_TRANSPORT_offer_hello_cancel (ohh);
69 * Offer the transport service the HELLO of another peer. Note that
70 * the transport service may just ignore this message if the HELLO is
71 * malformed or useless due to our local configuration.
73 * @param cfg configuration
74 * @param hello the hello message
75 * @param cont continuation to call when HELLO has been sent,
76 * tc reason #GNUNET_SCHEDULER_REASON_TIMEOUT for fail
77 * tc reasong #GNUNET_SCHEDULER_REASON_READ_READY for success
78 * @param cont_cls closure for @a cont
79 * @return a `struct GNUNET_TRANSPORT_OfferHelloHandle` handle or NULL on failure,
80 * in case of failure @a cont will not be called
83 struct GNUNET_TRANSPORT_OfferHelloHandle *
84 GNUNET_TRANSPORT_offer_hello (const struct GNUNET_CONFIGURATION_Handle *cfg,
85 const struct GNUNET_MessageHeader *hello,
86 GNUNET_SCHEDULER_TaskCallback cont,
89 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh
90 = GNUNET_new (struct GNUNET_TRANSPORT_OfferHelloHandle);
91 struct GNUNET_MQ_Envelope *env;
92 struct GNUNET_PeerIdentity peer;
95 GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) hello,
102 ohh->mq = GNUNET_CLIENT_connect (cfg,
114 GNUNET_break (ntohs (hello->type) == GNUNET_MESSAGE_TYPE_HELLO);
115 env = GNUNET_MQ_msg_copy (hello);
116 GNUNET_MQ_notify_sent (env,
119 GNUNET_MQ_send (ohh->mq,
126 * Cancel the request to transport to offer the HELLO message
128 * @param ohh the handle for the operation to cancel
131 GNUNET_TRANSPORT_offer_hello_cancel (struct GNUNET_TRANSPORT_OfferHelloHandle *ohh)
133 GNUNET_MQ_destroy (ohh->mq);
138 /* end of transport_api_offer_hello.c */