There is something going wrong in soap_ctrlpt.c at line 931 (based on version 1.6.6 release).
The http_Makemessage call looks as follows:
if (http_MakeMessage(
&request, 1, 1,
"Q" "sbc" "N" "s" "s" "Ucc" "sss",
SOAPMETHOD_POST, path.buf, path.length,
"HOST: ", host.buf, host.length,
content_length,
ContentTypeHeader,
"SOAPACTION: \"urn:schemas-upnp-org:control-1-0#QueryStateVariable\"",
xml_start, var_name, xml_end ) != 0 ) {
return UPNP_E_OUTOF_MEMORY;
}
This will result in the SOAPACTION header to be immediately followed by the User-Agent header, while a cr-lf should separate the two. I propose to fix this by changing the second "s" to "sc" to force the addition of a cr-lf after the SOAPACTION. This looks consistent to the other Makemessage calls. Patch include.
Cheers,
Hugo
Patch
This issue still exists in both 1.6.x and 1.8.0.
You are right, the CR/LF has been missed in a long ago change.
Committed in both branches.