Does libcoap with LwIP supports Client applications ?

[fun-works]

[mrdeep1]

I don't see why it should not be able to do this. There currently is only a server example, and it should not be difficult to add a client example if someone wants to volunteer.

[Borodkov]

Hello Thanks for your time and work with this lib

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may be "it should not be difficult to add a client example", but can you (@mrdeep1 or @obgm) help in this questions:

• how to create client session with lwip, that will be equal to client in libcoap-minimal repo?
• coap_io_lwip.c tested with coap client build?

what I try to do: coap_session_t *session = coap_new_client_session(ctx, &src, &dst, COAP_PROTO_UDP); -> coap_session_t *session = coap_session_create_client(ctx, local_if, server, proto); -> and in line 823 of coap_session.c -> https://github.com/obgm/libcoap/blob/df9071c93efff2e648257314198268c7c1d79980/src/coap_session.c#L819

and next, in coap_io_lwip.c, in function coap_socket_connect_udp() https://github.com/obgm/libcoap/blob/df9071c93efff2e648257314198268c7c1d79980/src/coap_io_lwip.c#L193

finaly, I goto error; and session == NULL, and I'm here with the same problem as topic starter

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sry for my english

[mrdeep1]

PR #884 has been raised which provides LwIP coap-client support.

[mrdeep1]

Closed as fixed in https://github.com/obgm/libcoap/pull/926 which is now in the develop branch. Client support is now available.