422 Unprocessable Entity POST - post

Question

I am making a POST request with DirectX Backbuffer copy of a character. It's basically a screenshot that is cropped and sent over HTTPS. Here is the C++ code using httplib.h (with SSL) in my game client that is triggered on login and logout:
#ifdef __AZURIOM_IMAGES
if (m_Azuriom_SaveAvatar) {
LPCSTR token = g_dpCertified.GetAzuriomAccessToken();
IDirect3DSurface9* pDestTarget;
CRect rectCtrl;
rectCtrl.top = this->m_rectClient.top + lpFace->rect.top;
rectCtrl.bottom = this->m_rectClient.top + lpFace->rect.bottom;
rectCtrl.left = this->m_rectClient.left + lpFace->rect.left;
rectCtrl.right = this->m_rectClient.left + lpFace->rect.right;
pd3dDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_FORCE_DWORD, &pDestTarget);
LPD3DXBUFFER buffer;
D3DXSaveSurfaceToFileInMemory(&buffer, D3DXIFF_PNG, pDestTarget, NULL, &rectCtrl);
httplib::SSLClient cli(AZURIOM_WEBSITE, AZURIOM_WEBSITE_PORT);
httplib::Headers headers = {
{ "Content-Type", "multipart/form-data"},
{ "Accept", "application/json"}
};
httplib::MultipartFormDataItems items = {
{ "access_token", token},
{ "avatar", std::string((char*)buffer->GetBufferPointer(), buffer->GetBufferSize()), pMover->GetName(), "image/png"},
{ "playerName", pMover->GetName()}
};
auto res = cli.Post("/api/flyff/upload_avatar", headers, items);
std::cout << res;
buffer->Release();
m_Azuriom_SaveAvatar = FALSE;
}
#endif
I go to my apache2 Logs and see this in the access.log file when I Login and out of the game:
192.168.1.2 - - [21/Dec/2022:12:22:05 -0600] "POST /api/flyff/upload_avatar HTTP/1.1" 422 42
I go to debug the game...this is what I get in the debugger:
- headers { size=2 } std::multimap<std::string,std::string,httplib::detail::ci,std::allocator<std::pair<std::string const ,std::string>>>
+ [comparator] {...} std::_Compressed_pair<httplib::detail::ci,std::_Compressed_pair<std::allocator<std::_Tree_node<std::pair<std::string const ,std::string>,void *>>,std::_Tree_val<std::_Tree_simple_types<std::pair<std::string const ,std::string>>>,1>,1>
+ [allocator] allocator std::_Compressed_pair<std::allocator<std::_Tree_node<std::pair<std::string const ,std::string>,void *>>,std::_Tree_val<std::_Tree_simple_types<std::pair<std::string const ,std::string>>>,1>
+ ["Accept"] "application/json" std::pair<std::string const ,std::string>
+ ["Content-Type"] "multipart/form-data" std::pair<std::string const ,std::string>
+ [Raw View] {...} std::multimap<std::string,std::string,httplib::detail::ci,std::allocator<std::pair<std::string const ,std::string>>>
- items { size=3 } std::vector<httplib::MultipartFormData,std::allocator<httplib::MultipartFormData>>
[capacity] 3 unsigned int
+ [allocator] allocator std::_Compressed_pair<std::allocator<httplib::MultipartFormData>,std::_Vector_val<std::_Simple_types<httplib::MultipartFormData>>,1>
+ [0] {name="access_token" content="" filename="" ...} httplib::MultipartFormData
+ [1] {name="avatar" content="臼NG\r\n\x1a\n" filename="Ling" ...} httplib::MultipartFormData
+ [2] {name="playerName" content="Ling" filename="" ...} httplib::MultipartFormData
+ [Raw View] {_Mypair=allocator } std::vector<httplib::MultipartFormData,std::allocator<httplib::MultipartFormData>>
I want to make this 422 error go away...and just upload the image.