Hi, that's very strange, your usage of the module is fine (at least the snippet you posted), so there must be something else. Did you take a trace between kamailio and the http server, as suggested?
Regards, Federico On Sun, Feb 15, 2026 at 1:59 PM Sarju Garg <[email protected]> wrote: > > Hi Federico, > > Thanks. We were making some more changes, and we see that this kind of > configuration does not work > > $http_req(hdr) = > "Content-Type: application/json\r\n" > "Accept: application/json\r\n" > "Connection: keep-alive";'' > > We upgraded the version to 6.1, and also we changed the line as you rightly > points but the print is not happening, but now with these 2 changes > > $http_req(hdr) ="Content-Type: application/json"; > $http_req(hdr) =""Accept: application/json"; > $http_req(hdr) =""Connection: keep-alive";'' > > And a version upgrade. I am not sure if it helped > > Regards > Sarju > > > On 15/02/26, 2:33 PM, "Federico Cabiddu" <[email protected] > <mailto:[email protected]>> wrote: > > > Hi, > are you sure that the body of the request is actually empty? > In your code you log its value before setting it so it's obviously > null at that point. > Can you take a trace between kamailio and the http server to look at > the actual request? Do you have access to the http server's log to > understand with it's replying 400? > > > Regards, > > > Federico > > > On Sun, Feb 15, 2026 at 6:58 AM Sarju Garg <[email protected] > <mailto:[email protected]>> wrote: > > > > Hi all, > > > > > > > > We are new to Kamailio world. > > > > > > > > I have written a very small code, where we want to just receive INVITE and > > send 480 and trigger external application on http interface. I am only > > sending 1 INVITE/ACK request for now. > > > > > > > > Code: > > > > request_route { > > > > t_newtran(); > > > > xlog("L_WARN", "APP-1 Receive Incoming call $rm\n"); > > > > t_send_reply("480", "Temporarily Unavailable"); > > > > jansson_set("string", "callingMSISDN", "calling", "$var(body)"); > > > > xlog(" OUT => BODY:\n$var(body)\n"); > > > > xlog("HTTP OUT => BODY:\n$http_req(body)\n"); > > > > $http_req(suspend) = 0; > > > > $http_req(body) = $var(body); > > > > http_async_query(http://10.20.10.120:7000/v1/mca-events > > <http://10.20.10.120:7000/v1/mca-events>, "HTTP_REPLY"); > > > > exit; > > > > > > > > Output > > > > > > > > loading modules under config path: /usr/local/lib64/kamailio/modules/ > > > > Listening on > > > > udp: 10.20.10.119:5065 > > > > Aliases: > > > > udp: signaling-server1:5065 > > > > *: 10.20.10.119:* > > > > > > > > 1(37861) WARNING: <script>: APP-1 Receive Incoming call INVITE > > > > 1(37861) ERROR: <script>: OUT => BODY: > > > > {"callingMSISDN":"calling"} > > > > 1(37861) ERROR: <script>: HTTP OUT => BODY: > > > > <null> > > > > 2(37862) WARNING: <script>: APP-1 Receive Incoming call ACK > > > > 2(37862) ERROR: <script>: OUT => BODY: > > > > {"callingMSISDN":"calling"} > > > > 2(37862) ERROR: <script>: HTTP OUT => BODY: > > > > <null> > > > > 8(37868) ERROR: <script>: HTTP request failed or returned error: <null>, > > status: 400 > > > > 8(37868) ERROR: <script>: HTTP request failed or returned error: <null>, > > status: 400 > > > > > > > > We are not able to set the parameter in body. For now a dummy value in > > inserted. > > > > > > > > As per > > https://www.kamailio.org/docs/modules/stable/modules/http_async_client.html > > <https://www.kamailio.org/docs/modules/stable/modules/http_async_client.html> > > > > > > > > http_req is allowed in async calls. > > > > > > > > The following is the version. > > > > > > > > root@signaling-server1:/usr/local/etc/kamailio# kamailio -v > > > > version: kamailio 6.0.5 (x86_64/linux) 900efe > > > > flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, > > USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, Q_MALLOC, > > F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, > > USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, > > HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED > > > > ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_SEND_BUFFER_SIZE > > 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB > > > > poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. > > > > id: 900efe > > > > compiled on 17:28:47 Feb 6 2026 with gcc 13.3.0 > > > > > > > > Also, I want to maintain HTTP Connection so plan to use $http_hdr for > > Connection: KeepAlive. > > > > > > > > Please guide us in this matter. > > > > > > > > Regards > > > > Sarju > > > > > > > > > > > > Important: keep the mailing list in the recipients, do not reply only to > > the sender! > > > _______________________________________________ Kamailio - Development Mailing List -- [email protected] To unsubscribe send an email to [email protected] Important: keep the mailing list in the recipients, do not reply only to the sender!
