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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,46 +1,3 @@ | ||
| <component name="ProjectRunConfigurationManager"> | ||
| <configuration default="false" name="ugate" type="CloudCodeCloudRunConfigurationType" factoryName="CloudCodeCloudDeployRunConfigurationFactory" show_console_on_std_err="false" show_console_on_std_out="false" gcpProject="{"googleUsername":"[email protected]","projectId":"dmeshgate","projectName":"dmeshgate","projectNumber":584624515903}" imageBuilder="{"name":"Docker","payload":{"path":"Dockerfile"}}"> | ||
| <option name="allowRunningInParallel" value="false" /> | ||
| <option name="buildEnvironment" value="Local" /> | ||
| <option name="buildpacksEnv"> | ||
| <map /> | ||
| </option> | ||
| <option name="cloudSqlConnections"> | ||
| <list /> | ||
| </option> | ||
| <option name="concurrency" value="1000" /> | ||
| <option name="cpuAllocated" value="1" /> | ||
| <option name="customCpuAllocated" value="" /> | ||
| <option name="dockerBuildArgs"> | ||
| <map /> | ||
| </option> | ||
| <option name="dockerTarget" value="" /> | ||
| <option name="environmentVariables"> | ||
| <map /> | ||
| </option> | ||
| <option name="gcbSettings"> | ||
| <GoogleCloudBuildSettings /> | ||
| </option> | ||
| <option name="gkeClusterLocation" /> | ||
| <option name="gkeClusterName" /> | ||
| <option name="gkeClusterNamespace" value="default" /> | ||
| <option name="gkeConnectivity" value="EXTERNAL" /> | ||
| <option name="imagePath" value="gcr.io/dmeshgate/ugate" /> | ||
| <option name="loadingAvailableBuilders" value="false" /> | ||
| <option name="managedAuthentication" value="ALLOW_UNAUTHENTICATED" /> | ||
| <option name="managedRegion" value="us-central1" /> | ||
| <option name="maxInstances" value="1" /> | ||
| <option name="memoryAllocated" value="MIB_256" /> | ||
| <option name="minInstances" value="" /> | ||
| <option name="platform" value="FULLY_MANAGED" /> | ||
| <option name="projectPathOnTarget" /> | ||
| <option name="selectedOptions"> | ||
| <list /> | ||
| </option> | ||
| <option name="serviceAccount" value="" /> | ||
| <option name="serviceName" value="ugate" /> | ||
| <option name="timeout" value="900" /> | ||
| <option name="vpcConnector" value="" /> | ||
| <method v="2" /> | ||
| </configuration> | ||
| <configuration /> | ||
| </component> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,32 +1,53 @@ | ||
| # Low level protocols used | ||
|
|
||
| UGate primary/target protocol is H3 - it is most flexible and most likely the future. | ||
|
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| ## H3 frames | ||
| One of the goals of a gateway is to support multiple protocols, for interop and | ||
| connectivity. | ||
|
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| A brief summary of the low levels of each protocol and overhead. | ||
|
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| ## H2/H3 frames | ||
|
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| H2 frame format - 9 byte header: | ||
| - Len(24) | ||
| - Len(24) - 16M chunks | ||
| - Type(8) | ||
| - Flags(8) | ||
| - StreamID(32) | ||
|
|
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| H2 int format, used in HPACK and QPACK: mix of varint and 'N-bit prefix'. | ||
| Short ints are 1 B (with few bits for flags), rest are varint, first byte uses 1111... for the N bits. | ||
|
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| Short ints are 1 B (with few bits for flags), rest are varint, first byte | ||
| uses 1111... for the N bits. | ||
|
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| QUIC int use first 2 bits to encode length ( 1,2,4,8) | ||
|
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| HTTP uses compressed headers, but can be turned off in custom protocols. | ||
|
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| Core benefits: | ||
| - broadly adopted and many implementations | ||
| - multiplexed - less TCP/TLS overhead | ||
| - flow control for each stream | ||
|
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||
|
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| ## Websocket frames | ||
|
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| After handshake, WS sends frames including at least 2B overhead for server originated, | ||
| and 2B + 4B(mask) for client: | ||
|
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| - FIN | ||
| - frame type - ping, ping, text, binary, cont, close | ||
| - payload - 1B or 3 B | ||
| - | ||
| - TYPE(1B): FIN, frame type - ping, pony, text, binary, cont, close | ||
| - payload len - 1B or 3 B | ||
|
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| Client frames must have a 4B 'mask' | ||
|
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| WS is not multiplexed - for HTTP/1.1 upgrade it is ideal for multiplexing H2. | ||
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| If protocol is H2 already - it's just a stream. | ||
|
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| # WebRTC | ||
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| In future it may use QUIC - currently UDP+SCTP. Best protocol for interop with web browsers, 2-way. | ||
| In future it may use QUIC - currently UDP+SCTP. Best protocol for interop with web | ||
| browsers, 2-way. | ||
|
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| - like quic, low level frames and implementations duplicate TCP, include flow control | ||
| - |
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