Getting "[oωo] handshake failure incompatible server" when trying to connect to a 1.19 fabric server

[mkaisercross]

When I try to connect I am getting this "[oωo] handshake failure incompatible server". I removed the owolib and conjuring mod and then I am able to connect fine.

Here is the log from my server:

05.07 22:03:27 [Server] ServerMain/INFO Building unoptimized datafixer
05.07 22:03:28 [Server] ServerMain/INFO Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
05.07 22:03:30 [Server] ServerMain/INFO Loaded 7 recipes
05.07 22:03:31 [Server] ServerMain/INFO Loaded 1179 advancements
05.07 22:03:32 [Server] Server thread/INFO Starting minecraft server version 1.19
05.07 22:03:32 [Server] Server thread/INFO Loading properties
05.07 22:03:32 [Server] Server thread/INFO Default game type: SURVIVAL
05.07 22:03:32 [Server] Server thread/INFO Generating keypair
05.07 22:03:32 [Server] Server thread/INFO Starting Minecraft server on 54.39.8.23:25587
05.07 22:03:32 [Server] Server thread/INFO Using epoll channel type
05.07 22:03:32 [Server] Server thread/INFO Preparing level "world"
05.07 22:03:32 [Server] Server thread/INFO Preparing start region for dimension minecraft:overworld
05.07 22:03:38 [Server] Worker-Main-6/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-6/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-6/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-16/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-16/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-13/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-15/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-15/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-6/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-10/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-10/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-5/INFO Preparing spawn area: 0%
05.07 22:03:38 [Server] Worker-Main-6/INFO Preparing spawn area: 0%
05.07 22:03:39 [Server] Worker-Main-14/INFO Preparing spawn area: 0%
05.07 22:03:39 [Server] Worker-Main-12/INFO Preparing spawn area: 0%
05.07 22:03:40 [Server] Worker-Main-17/INFO Preparing spawn area: 0%
05.07 22:03:40 [Server] Worker-Main-14/INFO Preparing spawn area: 32%
05.07 22:03:41 [Server] Server thread/INFO Time elapsed: 8628 ms
05.07 22:03:41 [Server] StartupDone (8.844s)! For help, type "help"
05.07 22:09:59 [Server] User Authenticator #1/INFO UUID of player unreal5 is 3f3ba8f0-ff2c-4322-9ccc-2c13f33df227
05.07 22:09:59 [Connect] User unreal5, IP xx.xx.xx,xx
05.07 22:09:59 [PebbleHost] unreal5 ran command Message of the Day
05.07 22:10:00 [Server] Server thread/INFO unreal5 joined the game
05.07 22:10:03 [Disconnect] User unreal5 has disconnected, reason: Disconnected
05.07 22:10:03 [Server] Server thread/INFO unreal5 left the game
05.07 22:10:03 [Server] Server thread/ Can't keep up! Is the server overloaded? Running 4346ms or 86 ticks behind
05.07 22:10:03 [Server] Server thread/ handleDisconnection() called twice

I've already increased the memory to 5GB and it's just me connected so I don't think it is overloaded. I am hosting the server on pebblehost.com. I am not sure how to check if my server is behind a proxy as you mention here. Can you please clarify?

[mikotalik]

Same error here with 0.7.2-1.18

[mkaisercross]

And my version is 0.7.3

[gliscowo]

My best guess would be that your server simply does not have owo installed - if it did, there would be information in the log on why the handshake failed
Cheers

[mkaisercross]

I double checked and the owo jar is in the mods directory on both the server and client.

Not sure if it helps but here is the client side log.

[19:55:25] [main/INFO]: Loading Minecraft 1.19 with Fabric Loader 0.14.8
[19:55:25] [main/INFO]: Loading 78 mods:
	- advancednetherite 1.6.1-1.19
	- agape_space 0.5.16
	- architectury 5.7.28
	- blue_endless_jankson 1.2.1 via jankson
	- cloth-basic-math 0.6.1 via cloth-config
	- cloth-config 7.0.72
	- com_electronwill_night-config_core 3.6.5 via forgeconfigapiport
	- com_electronwill_night-config_toml 3.6.5 via forgeconfigapiport
	- com_logisticscraft_occlusionculling 0.0.6-SNAPSHOT via entityculling
	- conjuring 1.0.23+1.19
	- entityculling 1.5.2-mc1.19
	- fabric 0.57.0+1.19
	- fabric-api-base 0.4.9+e62f51a3a9 via fabric
	- fabric-api-lookup-api-v1 1.6.7+9ff28f40a9 via fabric
	- fabric-biome-api-v1 9.0.14+b2a4a624a9 via fabric
	- fabric-blockrenderlayer-v1 1.1.18+9ff28f40a9 via fabric
	- fabric-command-api-v1 1.2.6+f71b366fa9 via fabric
	- fabric-command-api-v2 2.1.2+0d55f585a9 via fabric
	- fabric-commands-v0 0.2.23+df3654b3a9 via fabric
	- fabric-containers-v0 0.1.27+df3654b3a9 via fabric
	- fabric-content-registries-v0 3.2.0+07df213ea9 via fabric
	- fabric-convention-tags-v1 1.0.8+37622d24a9 via fabric
	- fabric-crash-report-info-v1 0.2.3+bd0a0d4aa9 via fabric
	- fabric-data-generation-api-v1 5.1.1+a680b9b4a9 via fabric
	- fabric-dimensions-v1 2.1.28+a6d2f785a9 via fabric
	- fabric-entity-events-v1 1.4.16+9ff28f40a9 via fabric
	- fabric-events-interaction-v0 0.4.26+9ff28f40a9 via fabric
	- fabric-events-lifecycle-v0 0.2.25+df3654b3a9 via fabric
	- fabric-game-rule-api-v1 1.0.19+18990361a9 via fabric
	- fabric-item-api-v1 1.5.4+767db26ea9 via fabric
	- fabric-item-groups-v0 0.3.25+9ff28f40a9 via fabric
	- fabric-key-binding-api-v1 1.0.18+9ff28f40a9 via fabric
	- fabric-keybindings-v0 0.2.16+df3654b3a9 via fabric
	- fabric-lifecycle-events-v1 2.1.0+33fbc738a9 via fabric
	- fabric-loot-api-v2 1.1.0+03a4e568a9 via fabric
	- fabric-loot-tables-v1 1.1.3+9e7660c6a9 via fabric
	- fabric-message-api-v1 1.0.1+513f4a59a9 via fabric
	- fabric-mining-level-api-v1 2.1.10+33fbc738a9 via fabric
	- fabric-models-v0 0.3.15+9ff28f40a9 via fabric
	- fabric-networking-api-v1 1.0.27+7fe97409a9 via fabric
	- fabric-networking-v0 0.3.14+df3654b3a9 via fabric
	- fabric-object-builder-api-v1 4.0.7+9ff28f40a9 via fabric
	- fabric-particles-v1 1.0.8+dc39553aa9 via fabric
	- fabric-registry-sync-v0 0.9.17+23c4cfefa9 via fabric
	- fabric-renderer-api-v1 1.0.8+9ff28f40a9 via fabric
	- fabric-renderer-indigo 0.6.9+1f92344ea9 via fabric
	- fabric-renderer-registries-v1 3.2.18+df3654b3a9 via fabric
	- fabric-rendering-data-attachment-v1 0.3.12+9ff28f40a9 via fabric
	- fabric-rendering-fluids-v1 3.0.5+9ff28f40a9 via fabric
	- fabric-rendering-v0 1.1.20+df3654b3a9 via fabric
	- fabric-rendering-v1 1.10.14+9ff28f40a9 via fabric
	- fabric-resource-conditions-api-v1 2.0.9+e62f51a3a9 via fabric
	- fabric-resource-loader-v0 0.5.5+a6d2f785a9 via fabric
	- fabric-screen-api-v1 1.0.24+f05effafa9 via fabric
	- fabric-screen-handler-api-v1 1.2.6+9ff28f40a9 via fabric
	- fabric-textures-v0 1.0.18+9ff28f40a9 via fabric
	- fabric-transfer-api-v1 2.0.9+e62f51a3a9 via fabric
	- fabric-transitive-access-wideners-v1 1.1.1+9e7660c6a9 via fabric
	- fabricloader 0.14.8
	- flesh2leather 1.0.3+1.19
	- forgeconfigapiport 4.0.0
	- ironchests 1.7.2
	- jankson 4.1.1+j1.2.1 via libgui
	- java 17
	- libgui 6.0.0+1.19 via ironchests
	- libninepatch 1.1.0 via libgui
	- map_atlases 1.6.0
	- minecraft 1.19
	- modmenu 4.0.0
	- moremcmeta 1.19-3.0.4
	- no_fog 1.3.0+1.16.5-1.19
	- owo 0.7.3+1.19
	- roughlyenoughitems 9.0.491
	- simple_backpack 1.3.17
	- totw_additions 1.2.3
	- wardenloot 1.0.8-1.19.x
	- xaerominimap 22.10.1
	- xaeroworldmap 1.24.0
[19:55:26] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=file:/C:/Users/mkais/AppData/Roaming/.technic/cache/net/fabricmc/sponge-mixin/0.11.4+mixin.0.8.5/sponge-mixin-0.11.4+mixin.0.8.5.jar Service=Knot/Fabric Env=CLIENT
[19:55:26] [main/INFO]: Compatibility level set to JAVA_17
[19:55:27] [main/WARN]: Configuration conflict: there is more than one oshi.properties file on the classpath
[19:55:27] [main/WARN]: Configuration conflict: there is more than one oshi.architecture.properties file on the classpath
[19:55:30] [main/INFO]: Building optimized datafixer
[19:55:35] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:55:35] [Render thread/INFO]: Setting user: unreal5
[19:55:36] [Render thread/INFO]: [Agape Space Mod] Initializing
[19:55:36] [Render thread/INFO]: [Agape Space Mod] Planet configs loaded.
[19:55:36] [Render thread/INFO]: [Agape Space Mod] Loading skybox for [agape:venus_clouds]...
[19:55:36] [Render thread/INFO]: [Agape Space Mod]  => [all],[agape_space:textures/environment/venus3.png]
[19:55:36] [Render thread/INFO]: [Agape Space Mod] Loading skybox for [agape:starship_1]...
[19:55:36] [Render thread/INFO]: [Agape Space Mod]  => [all],[agape_space:textures/environment/stars.png]
[19:55:37] [Render thread/INFO]: [REI] Config loaded.
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider DefaultPlugin [roughlyenoughitems] for REIPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider DefaultRuntimePlugin [roughlyenoughitems] for REIPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider ConjuringClientPlugin [conjuring] for REIPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider OwoReiPlugin [owo] for REIPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider DefaultClientPlugin [roughlyenoughitems] for REIPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider DefaultClientRuntimePlugin [roughlyenoughitems] for REIPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider DefaultPlugin [roughlyenoughitems] for REIServerPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider DefaultRuntimePlugin [roughlyenoughitems] for REIServerPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider FabricFluidAPISupportPlugin for REIServerPlugin
[19:55:37] [Render thread/INFO]: [REI] Registered plugin provider FabricFluidAPISupportPlugin for REIPlugin
[19:55:38] [Render thread/INFO]: [wardenloot] Mod Initialized
[19:55:38] [Render thread/INFO]: [Indigo] Registering Indigo renderer!
[19:55:39] [Render thread/INFO]: [REI] Registered plugin provider ConjuringClientPlugin [conjuring] for REIClientPlugin
[19:55:39] [Render thread/INFO]: [REI] Registered plugin provider OwoReiPlugin [owo] for REIClientPlugin
[19:55:39] [Render thread/INFO]: [REI] Registered plugin provider DefaultClientPlugin [roughlyenoughitems] for REIClientPlugin
[19:55:39] [Render thread/INFO]: [REI] Registered plugin provider DefaultClientRuntimePlugin [roughlyenoughitems] for REIClientPlugin
[19:55:39] [Render thread/INFO]: Loading Xaero's Minimap - Stage 1/2
[19:55:39] [Render thread/INFO]: Loading Xaero's World Map - Stage 1/2
[19:55:40] [Render thread/INFO]: Backend library: LWJGL version 3.3.1 SNAPSHOT
[19:55:43] [Render thread/INFO]: Narrator library for x64 successfully loaded
[19:55:43] [Render thread/INFO]: Reloading ResourceManager: Default, Fabric Mods (Advanced Netherite, Space Dimensions, Cloth Config v6, Conjuring, EntityCulling-Fabric, Fabric API, Fabric API Base, Fabric API Lookup API (v1), Fabric Biome API (v1), Fabric BlockRenderLayer Registration (v1), Fabric Command API (v1), Fabric Command API (v2), Fabric Commands (v0), Fabric Containers (v0), Fabric Content Registries (v0), Fabric Convention Tags, Fabric Crash Report Info (v1), Fabric Data Generation API (v1), Fabric Dimensions API (v1), Fabric Entity Events (v1), Fabric Events Interaction (v0), Fabric Events Lifecycle (v0), Fabric Game Rule API (v1), Fabric Item API (v1), Fabric Item Groups (v0), Fabric Key Binding API (v1), Fabric Key Bindings (v0), Fabric Lifecycle Events (v1), Fabric Loot API (v2), Fabric Loot Tables (v1), Fabric Message API (v1), Fabric Mining Level API (v1), Fabric Models (v0), Fabric Networking API (v1), Fabric Networking (v0), Fabric Object Builder API (v1), Fabric Particles (v1), Fabric Registry Sync (v0), Fabric Renderer API (v1), Fabric Renderer - Indigo, Fabric Renderer Registries (v1), Fabric Rendering Data Attachment (v1), Fabric Rendering Fluids (v1), Fabric Rendering (v0), Fabric Rendering (v1), Fabric Resource Conditions API (v1), Fabric Resource Loader (v0), Fabric Screen API (v1), Fabric Screen Handler API (v1), Fabric Textures (v0), Fabric Transfer API (v1), Fabric Transitive Access Wideners (v1), Fabric Loader, Flesh2Leather, Forge Config API Port, Iron Chests, Jankson, LibGui, Map Atlases, Mod Menu, No Fog, o?o, Roughly Enough Items, SimpleBackpack, Towers of the Wild: Additions, Warden Loot, Xaero's Minimap, Xaero's World Map), __MoreMcmeta Internal__
[19:55:44] [Render thread/INFO]: Loading Xaero's Minimap - Stage 2/2
[19:55:45] [Render thread/INFO]: Xaero's Minimap: World Map found!
[19:55:45] [Render thread/INFO]: No Optifine!
[19:55:45] [Render thread/INFO]: Loading Xaero's World Map - Stage 2/2
[19:55:45] [Render thread/INFO]: New world map region cache hash code: 231126123
[19:55:45] [Render thread/INFO]: Xaero's WorldMap Mod: Xaero's minimap found!
[19:55:45] [Render thread/INFO]: No Optifine!
[19:55:45] [Render thread/INFO]: No Vivecraft!
[19:55:47] [Worker-Main-20/WARN]: Unused frames in sprite agape_space:block/deco_table_effect: [3]
[19:55:47] [Render thread/WARN]: Missing sound for event: minecraft:item.goat_horn.play
[19:55:47] [Render thread/WARN]: Missing sound for event: minecraft:entity.goat.screaming.horn_break
[19:55:47] [Render thread/INFO]: OpenAL initialized on device OpenAL Soft on Speakers (Dell AC511 USB SoundBar)
[19:55:47] [Render thread/INFO]: Sound engine started
[19:55:48] [Render thread/INFO]: Created: 1024x1024x4 minecraft:textures/atlas/blocks.png-atlas
[19:55:48] [Render thread/INFO]: Created: 256x128x4 minecraft:textures/atlas/signs.png-atlas
[19:55:48] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/banner_patterns.png-atlas
[19:55:48] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/shield_patterns.png-atlas
[19:55:48] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/chest.png-atlas
[19:55:48] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/beds.png-atlas
[19:55:48] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/shulker_boxes.png-atlas
[19:55:49] [Render thread/WARN]: Shader rendertype_entity_translucent_emissive could not find sampler named Sampler2 in the specified shader program.
[19:55:49] [Render thread/INFO]: Created: 512x256x0 minecraft:textures/atlas/particles.png-atlas
[19:55:49] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas
[19:55:49] [Render thread/INFO]: Created: 256x128x0 minecraft:textures/atlas/mob_effects.png-atlas
[19:55:49] [Render thread/INFO]: Successfully reloaded the minimap shaders!
[19:55:49] [Render thread/INFO]: Successfully reloaded the world map shaders!
[19:55:53] [Worker-Bootstrap-2/INFO]: 4256 Datafixer optimizations took 22807 milliseconds
[19:57:21] [Render thread/INFO]: Connecting to 54.39.8.23, 25587
[19:57:21] [Netty Client IO #2/INFO]: Connected to a vanilla server. Catching up missing behaviour.
[19:57:22] [Render thread/INFO]: New minimap session initialized!
[19:57:22] [REI-ReloadPlugins/INFO]: [REI] Reloading Plugin Manager [REIPlugin] stage [START], registered 7 plugins: DefaultRuntimePlugin [roughlyenoughitems], ConjuringClientPlugin [conjuring], OwoReiPlugin [owo], DefaultClientRuntimePlugin [roughlyenoughitems], FabricFluidAPISupportPlugin, DefaultPlugin [roughlyenoughitems], DefaultClientPlugin [roughlyenoughitems]
[19:57:22] [REI-ReloadPlugins/INFO]: [REI] Reloading Plugin Manager [REIClientPlugin] stage [START], registered 4 plugins: ConjuringClientPlugin [conjuring], OwoReiPlugin [owo], DefaultClientRuntimePlugin [roughlyenoughitems], DefaultClientPlugin [roughlyenoughitems]
[19:57:22] [Render thread/INFO]: New world map session initialized!
[19:57:22] [REI-ReloadPlugins/INFO]: [REI] Reloading Plugin Manager [REIServerPlugin] stage [START], registered 3 plugins: DefaultRuntimePlugin [roughlyenoughitems], FabricFluidAPISupportPlugin, DefaultPlugin [roughlyenoughitems]
[19:57:22] [REI-ReloadPlugins/INFO]: [REI] Reloaded Plugin Manager [REIPlugin] with 2 entry types, 5 item comparators, 0 fluid comparators and 2 fluid support providers in 74ms.
[19:57:22] [REI-ReloadPlugins/INFO]: [REI] Reloaded Plugin Manager [REIClientPlugin] with 1781 entries, 0 displays, 0 display visibility predicates, 0 categories (), 5 exclusion zones and 3 overlay deciders in 140ms.
[19:57:22] [REI-ReloadPlugins/INFO]: [REI] Reloaded Plugin Manager [REIServerPlugin] with 0 menu infos in 1ms.
[19:57:22] [Render thread/WARN]: [REI] Suppressing Reload Plugins of stage START
[19:57:23] [REI-ReloadPlugins/INFO]: [REI] Reloading Plugin Manager [REIPlugin] stage [END], registered 7 plugins: DefaultRuntimePlugin [roughlyenoughitems], ConjuringClientPlugin [conjuring], OwoReiPlugin [owo], DefaultClientRuntimePlugin [roughlyenoughitems], FabricFluidAPISupportPlugin, DefaultPlugin [roughlyenoughitems], DefaultClientPlugin [roughlyenoughitems]
[19:57:23] [REI-ReloadPlugins/INFO]: [REI] Reloading Plugin Manager [REIClientPlugin] stage [END], registered 4 plugins: ConjuringClientPlugin [conjuring], OwoReiPlugin [owo], DefaultClientRuntimePlugin [roughlyenoughitems], DefaultClientPlugin [roughlyenoughitems]
[19:57:23] [REI-ReloadPlugins/INFO]: [REI] Reloading Plugin Manager [REIServerPlugin] stage [END], registered 3 plugins: DefaultRuntimePlugin [roughlyenoughitems], FabricFluidAPISupportPlugin, DefaultPlugin [roughlyenoughitems]
[19:57:23] [REI-ReloadPlugins/INFO]: [REI] Reloaded Plugin Manager [REIPlugin] with 2 entry types, 5 item comparators, 0 fluid comparators and 2 fluid support providers in 54ms.
[19:57:23] [REI-ReloadPlugins/INFO]: [REI] Reloaded Plugin Manager [REIClientPlugin] with 1781 entries, 1655 displays, 2 display visibility predicates, 24 categories (Crafting, Smelting, Smoking, Blasting, Campfire, Stone Cutting, Fuel, Brewing, Composting, Stripping, Smithing, Anvil, Beacon Base, Beacon Payment, Tilling, Pathing, Waxing, Wax Scraping, Oxidizing, Oxidation Scraping, Information, Gem Tinkering, Soul Weaving, Soulfire Forge), 5 exclusion zones and 3 overlay deciders in 267ms.
[19:57:23] [REI-ReloadPlugins/INFO]: [REI] Reloaded Plugin Manager [REIServerPlugin] with 4 menu infos in 13ms.
[19:57:23] [Render thread/INFO]: Minimap session finalized.
[19:57:23] [Render thread/INFO]: Finalizing world map session...
[19:57:23] [Thread-1/INFO]: World map force-cleaned!
[19:57:23] [Render thread/INFO]: World map session finalized.

[mkaisercross]

You can see it is loading on the client if you look at the hidden mods in mod menu.
https://imgur.com/a/vP8GUda

[mkaisercross]

Ok yeah you're right I wasn't loading it on the server. My hosting service (pebblehost) let's you set the jar to start the server which was pointing to server.jar instead of fabric-server-launch.jar. Pointing to fabric-server-launch.jar seems to fix it for me. Thanks!