Regarding get version

[PoojaGaur1708]

Hello , Can you pls tell me if requester is supporting only 1.0 version then what will be required spdm version msg received from responder.
In my case , i am receiving (0x5 0x10 0x4 0x0 0x0 0x0 0x1 0x0 0x0).
Can you pls tell me what should be VersionNumberEntry1: bit.

As in below code libspdm_req_get_version.c L155: it is returning false.

153 /* libspdm_negotiate_connection_version will change the spdm_response.
154 * It must be done after append_message_a./
155 result = libspdm_negotiate_connection_version(&common_version,
156 spdm_context->local_context.version.spdm_version,
157 spdm_context->local_context.version.spdm_version_count,
158 spdm_response->version_number_entry,
159 spdm_response->version_number_entry_count);
160 if (result == false) {
161 LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO,
162 "%s - :%d false**\n",func,LINE));
163
164 libspdm_reset_message_a(spdm_context);
165 status = LIBSPDM_STATUS_NEGOTIATION_FAIL;
166 goto receive_done;
167 }
168

[jyao1]

@PoojaGaur1708 , The data returned is wrong. It means the version number 0x00 0x00.

GET_VERSION is just first command, I guess you may get more issues.

I believe you can check the issue by yourself. My recommendation is:

1. read SPDM spec, to understand the meaning of the returned byte code.
2. run SPDM emu (https://github.com/DMTF/spdm-emu), to see what is the expected byte as reference.

[PoojaGaur1708]

Can you pls tell me what should be data returned for version command by responder for only version 1.1 support ?

[jyao1]

2 byte version 0x00 0x11

[steven-bellock]

if requester is supporting only 1.0 version then what will be required spdm version msg received from responder.

The versions returned in a VERSION response are completely independent of any versions that the Requester supports. If the Responder returns versions that the Requester doesn't support then the Requester shouldn't talk to that Responder.