Unable to access cesium apis in build

[james.dean.jhuapl]

Hello there!

Few items first for context: I’m developing an application using UE 5.1 for various geolocation features and very heavily utilize the cesium for unreal plugin.

The problem is that, while I have no issues accessing and loading cesium terrains within the UE 5.1 editor, the packaged application is unable to access api.cesium.com. I’m pretty sure it’s a firewall or proxy setting change, but I’m struggling to figure out what’s different between the UE editor and a deployed application.

Here is the relevant log information – again bear in mind. I have no issues accessing terrain datasets while in the editor. It’s just in a build that these problems occur:

[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: invalid HTTP response code received. URL: https://api.cesium.com/v1/assets/2275207/endpoint?access_token=[...], HTTP code: 0, content length: 0, actual payload size: 0
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: request failed, libcurl error: 35 (SSL connect error)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 0 (Found bundle for host: 0x279d2da28f0 [serially])
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 1 (Hostname ‘api.cesium.com’ was found in DNS cache)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 2 ( Trying 52.85.151.18:443…)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 3 (Connected to api.cesium.com (52.85.151.18) port 443 (#3))
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 4 (schannel: disabled automatic use of client certificate)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 5 (ALPN: offers http/1.1)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 6 (schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CB0080: libcurl info message cache 7 (Closing connection 3)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: invalid HTTP response code received. URL: https://api.cesium.com/v1/assets/1/endpoint?access_token=[...], HTTP code: 0, content length: 0, actual payload size: 0
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: request failed, libcurl error: 35 (SSL connect error)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 0 (Hostname ‘api.cesium.com’ was found in DNS cache)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 1 ( Trying 52.85.151.18:443…)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 2 (Connected to api.cesium.com (52.85.151.18) port 443 (#0))
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 3 (schannel: disabled automatic use of client certificate)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 4 (ALPN: offers http/1.1)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 5 (schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279C73C7290: libcurl info message cache 6 (Closing connection 0)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: invalid HTTP response code received. URL: https://api.cesium.com/v1/assets/96188/endpoint?access_token=[...], HTTP code: 0, content length: 0, actual payload size: 0
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: request failed, libcurl error: 35 (SSL connect error)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 0 (Found bundle for host: 0x279d2da28f0 [serially])
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 1 (Hostname ‘api.cesium.com’ was found in DNS cache)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 2 ( Trying 52.85.151.18:443…)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 3 (Connected to api.cesium.com (52.85.151.18) port 443 (#2))
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 4 (schannel: disabled automatic use of client certificate)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 5 (ALPN: offers http/1.1)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 6 (schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279D1CBFB70: libcurl info message cache 7 (Closing connection 2)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: invalid HTTP response code received. URL: https://api.cesium.com/v1/assets/2/endpoint?access_token=[...], HTTP code: 0, content length: 0, actual payload size: 0
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: request failed, libcurl error: 35 (SSL connect error)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 0 (Found bundle for host: 0x279d2da28f0 [serially])
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 1 ( Trying 52.85.151.18:443…)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 2 (Connected to api.cesium.com (52.85.151.18) port 443 (#1))
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 3 (schannel: disabled automatic use of client certificate)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 4 (ALPN: offers http/1.1)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 5 (schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.)
[2024.01.31-23.59.49:551][ 1]LogHttp: Warning: 00000279CA36FB70: libcurl info message cache 6 (Closing connection 1)
[2024.01.31-23.59.49:554][ 1]LogCesium: Error: [2024-01-31 18:59:49.555] [error] [TilesetContentManager.cpp:825] An unexpected error occurred when loading tile: Connection failed.

[2024.01.31-23.59.49:554][ 1]LogCesium: Error: [2024-01-31 18:59:49.555] [error] [TilesetContentManager.cpp:825] An unexpected error occurred when loading tile: Connection failed.

[2024.01.31-23.59.49:554][ 1]LogCesium: Error: [2024-01-31 18:59:49.555] [error] [TilesetContentManager.cpp:825] An unexpected error occurred when loading tile: Connection failed.

[2024.01.31-23.59.49:554][ 1]LogCesium: Error: [2024-01-31 18:59:49.555] [error] [RasterOverlayCollection.cpp:127] Error while creating tile provider: Connection failed.

[Kevin_Ring]

What platform are you running the packaged application on? Is it the exact same system where the Editor works? Have you set any environment variables such as HTTP_PROXY to make the Editor work?

[UNES_DEV_2]

I have a same problem at the application package.

[2024.10.30-05.15.08:358][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: invalid HTTP response code received. URL: https://api.cesium.com/v1/assets/96188/endpoint?access_token=[...], HTTP code: 0, content length: 0, actual payload size: 0
[2024.10.30-05.15.08:369][832]LogPlayLevel: Error: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: request failed, libcurl error: 60 (SSL peer certificate or SSH remote key was not OK)
[2024.10.30-05.15.08:369][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 0 (Found bundle for host: 0x16731afbe60 [serially])
[2024.10.30-05.15.08:369][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 1 ( Trying 3.168.167.115:443…)
[2024.10.30-05.15.08:380][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 2 (Connected to api.cesium.com (3.168.167.115) port 443 (#1))
[2024.10.30-05.15.08:380][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 3 (ALPN: offers http/1.1)
[2024.10.30-05.15.08:380][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 4 (TLSv1.3 (OUT), TLS handshake, Client hello (1)
[2024.10.30-05.15.08:391][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 5 (TLSv1.3 (IN), TLS handshake, Server hello (2)
[2024.10.30-05.15.08:391][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 6 (TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8)
[2024.10.30-05.15.08:402][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 7 (TLSv1.3 (IN), TLS handshake, Certificate (11)
[2024.10.30-05.15.08:402][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 8 (TLSv1.3 (OUT), TLS alert, unknown CA (560)
[2024.10.30-05.15.08:402][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 9 (SSL certificate problem: unable to get local issuer certificate)
[2024.10.30-05.15.08:424][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9BA0: libcurl info message cache 10 (Closing connection 1)
[2024.10.30-05.15.08:424][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: invalid HTTP response code received. URL: https://api.cesium.com/v1/assets/2275207/endpoint?access_token=[...], HTTP code: 0, content length: 0, actual payload size: 0
[2024.10.30-05.15.08:424][832]LogPlayLevel: Error: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: request failed, libcurl error: 60 (SSL peer certificate or SSH remote key was not OK)
[2024.10.30-05.15.08:435][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 0 (Hostname ‘api.cesium.com’ was found in DNS cache)
[2024.10.30-05.15.08:435][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 1 ( Trying 3.168.167.115:443…)
[2024.10.30-05.15.08:435][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 2 (Connected to api.cesium.com (3.168.167.115) port 443 (#0))
[2024.10.30-05.15.08:435][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 3 (ALPN: offers http/1.1)
[2024.10.30-05.15.08:446][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 4 (TLSv1.3 (OUT), TLS handshake, Client hello (1)
[2024.10.30-05.15.08:446][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:327][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 5 (TLSv1.3 (IN), TLS handshake, Server hello (2)
[2024.10.30-05.15.08:446][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:328][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 6 (TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8)
[2024.10.30-05.15.08:446][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:328][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 7 (TLSv1.3 (IN), TLS handshake, Certificate (11)
[2024.10.30-05.15.08:457][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:328][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 8 (TLSv1.3 (OUT), TLS alert, unknown CA (560)
[2024.10.30-05.15.08:457][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:328][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 9 (SSL certificate problem: unable to get local issuer certificate)
[2024.10.30-05.15.08:468][832]LogPlayLevel: Warning: UAT: [2024.10.30-05.15.08:328][ 1]LogHttp: Warning: 00000167352B9710: libcurl info message cache 10 (Closing connection 0)
[2024.10.30-05.15.08:468][832]LogPlayLevel: Error: UAT: [2024.10.30-05.15.08:341][ 1]LogCesium: Error: [2024-10-30 14:15:08.341] [error] [TilesetContentManager.cpp:893] An unexpected error occurred when loading tile: Request failed.

The running platform is windows.
In editor there is no problem. no custom HTTP_PROXY.

[Kevin_Ring]

Hi @UNES_DEV_2, welcome to the community!
Please see this thread:

KNOWN ISSUE: Tilesets not loading in packaged Unreal apps

Hi all, We’re aware that many users are experiencing issues with loading 3D Tiles in packaged Unreal apps, including those that have been packaged several releases ago. We sincerely apologize for the inconvenience. Our AWS certificates were renewed this week, and we suspect that this is the problem. If you’re experiencing this issue, please try the following workarounds: Clearing the DNS cache on the machine. Delete the cesium-request-cache.sqlite file. I believe this is located in the Engin…

My most recent post in that thread has a command you can run from a PowerShell prompt that should fix this problem by triggering your system to download the necessary certificate:

Invoke-WebRequest "https://api.cesium.com"