[Bug]: HTTP 101 requests should not pollute web_log.request_processing_time by default

[Phaen]

Bug description

HTTP 101 indicates that the server is switching protocol, this means that the duration of the request is most likely no longer a relevant metric in the HTTP context. Often this results into the connection being upgraded to a websocket which can lasts many minutes, instantly carrying the average processing time over the web_log_web_slow threshold when it closes and appears in the log. This completely ruins the graph, making it impossible to use and also triggers warning and critical alerts depending on the traffic and time the socket was open.

Expected behavior

HTTP 101 requests should be omitted from the web_log.request_processing_time log by default. I shouldn't have to dig into any custom configuration to not be spammed with warning and critical alerts for using websockets on my server, nor should they prevent me from diagnosing actual delays on my server.

Steps to reproduce

1. Open a websocket using any software that supports it
2. Close the websocket after sufficient time to raise your average significantly
3. Watch web_log.request_processing_time spike unnecessarily and trigger either warning or critical alerts for no reason
   ...

Installation method

kickstart.sh

System info

Linux [REDACTED] 6.1.76 #1 SMP Thu Feb  1 15:48:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
/etc/lsb-release:DISTRIB_ID=Ubuntu
/etc/lsb-release:DISTRIB_RELEASE=22.04
/etc/lsb-release:DISTRIB_CODENAME=jammy
/etc/lsb-release:DISTRIB_DESCRIPTION="Ubuntu 22.04.4 LTS"
/etc/os-release:PRETTY_NAME="Ubuntu 22.04.4 LTS"
/etc/os-release:NAME="Ubuntu"
/etc/os-release:VERSION_ID="22.04"
/etc/os-release:VERSION="22.04.4 LTS (Jammy Jellyfish)"
/etc/os-release:VERSION_CODENAME=jammy
/etc/os-release:ID=ubuntu
/etc/os-release:ID_LIKE=debian
/etc/os-release:UBUNTU_CODENAME=jammy

Netdata build info

Packaging:
    Netdata Version ____________________________________________ : v1.45.4
    Installation Type __________________________________________ : binpkg-deb
    Package Architecture _______________________________________ : x86_64
    Package Distro _____________________________________________ :  
    Configure Options __________________________________________ : dummy-configure-command
Default Directories:
    User Configurations ________________________________________ : /etc/netdata
    Stock Configurations _______________________________________ : /usr/lib/netdata/conf.d
    Ephemeral Databases (metrics data, metadata) _______________ : /var/cache/netdata
    Permanent Databases ________________________________________ : /var/lib/netdata
    Plugins ____________________________________________________ : /usr/libexec/netdata/plugins.d
    Static Web Files ___________________________________________ : /var/lib/netdata/www
    Log Files __________________________________________________ : /var/log/netdata
    Lock Files _________________________________________________ : /var/lib/netdata/lock
    Home _______________________________________________________ : /var/lib/netdata
Operating System:
    Kernel _____________________________________________________ : Linux
    Kernel Version _____________________________________________ : 6.1.76
    Operating System ___________________________________________ : Ubuntu
    Operating System ID ________________________________________ : ubuntu
    Operating System ID Like ___________________________________ : debian
    Operating System Version ___________________________________ : 22.04.4 LTS (Jammy Jellyfish)
    Operating System Version ID ________________________________ : none
    Detection __________________________________________________ : /etc/os-release
Hardware:
    CPU Cores __________________________________________________ : 2
    CPU Frequency ______________________________________________ : 2400000000
    RAM Bytes __________________________________________________ : 3126308864
    Disk Capacity ______________________________________________ : 42949672960
    CPU Architecture ___________________________________________ : x86_64
    Virtualization Technology __________________________________ : xen
    Virtualization Detection ___________________________________ : systemd-detect-virt
Container:
    Container __________________________________________________ : none
    Container Detection ________________________________________ : systemd-detect-virt
    Container Orchestrator _____________________________________ : none
    Container Operating System _________________________________ : none
    Container Operating System ID ______________________________ : none
    Container Operating System ID Like _________________________ : none
    Container Operating System Version _________________________ : none
    Container Operating System Version ID ______________________ : none
    Container Operating System Detection _______________________ : none
Features:
    Built For __________________________________________________ : Linux
    Netdata Cloud ______________________________________________ : YES
    Health (trigger alerts and send notifications) _____________ : YES
    Streaming (stream metrics to parent Netdata servers) _______ : YES
    Back-filling (of higher database tiers) ____________________ : YES
    Replication (fill the gaps of parent Netdata servers) ______ : YES
    Streaming and Replication Compression ______________________ : YES (zstd lz4 gzip)
    Contexts (index all active and archived metrics) ___________ : YES
    Tiering (multiple dbs with different metrics resolution) ___ : YES (5)
    Machine Learning ___________________________________________ : YES
Database Engines:
    dbengine ___________________________________________________ : YES
    alloc ______________________________________________________ : YES
    ram ________________________________________________________ : YES
    none _______________________________________________________ : YES
Connectivity Capabilities:
    ACLK (Agent-Cloud Link: MQTT over WebSockets over TLS) _____ : YES
    static (Netdata internal web server) _______________________ : YES
    h2o (web server) ___________________________________________ : YES
    WebRTC (experimental) ______________________________________ : NO
    Native HTTPS (TLS Support) _________________________________ : YES
    TLS Host Verification ______________________________________ : YES
Libraries:
    LZ4 (extremely fast lossless compression algorithm) ________ : YES
    ZSTD (fast, lossless compression algorithm) ________________ : YES
    zlib (lossless data-compression library) ___________________ : YES
    Brotli (generic-purpose lossless compression algorithm) ____ : NO
    protobuf (platform-neutral data serialization protocol) ____ : YES (system)
    OpenSSL (cryptography) _____________________________________ : YES
    libdatachannel (stand-alone WebRTC data channels) __________ : NO
    JSON-C (lightweight JSON manipulation) _____________________ : YES
    libcap (Linux capabilities system operations) ______________ : NO
    libcrypto (cryptographic functions) ________________________ : YES
    libyaml (library for parsing and emitting YAML) ____________ : YES
Plugins:
    apps (monitor processes) ___________________________________ : YES
    cgroups (monitor containers and VMs) _______________________ : YES
    cgroup-network (associate interfaces to CGROUPS) ___________ : YES
    proc (monitor Linux systems) _______________________________ : YES
    tc (monitor Linux network QoS) _____________________________ : YES
    diskspace (monitor Linux mount points) _____________________ : YES
    freebsd (monitor FreeBSD systems) __________________________ : NO
    macos (monitor MacOS systems) ______________________________ : NO
    statsd (collect custom application metrics) ________________ : YES
    timex (check system clock synchronization) _________________ : YES
    idlejitter (check system latency and jitter) _______________ : YES
    bash (support shell data collection jobs - charts.d) _______ : YES
    debugfs (kernel debugging metrics) _________________________ : YES
    cups (monitor printers and print jobs) _____________________ : YES
    ebpf (monitor system calls) ________________________________ : YES
    freeipmi (monitor enterprise server H/W) ___________________ : YES
    nfacct (gather netfilter accounting) _______________________ : YES
    perf (collect kernel performance events) ___________________ : YES
    slabinfo (monitor kernel object caching) ___________________ : YES
    Xen ________________________________________________________ : YES
    Xen VBD Error Tracking _____________________________________ : NO
    Logs Management ____________________________________________ : YES
Exporters:
    AWS Kinesis ________________________________________________ : NO
    GCP PubSub _________________________________________________ : NO
    MongoDB ____________________________________________________ : YES
    Prometheus (OpenMetrics) Exporter __________________________ : YES
    Prometheus Remote Write ____________________________________ : YES
    Graphite ___________________________________________________ : YES
    Graphite HTTP / HTTPS ______________________________________ : YES
    JSON _______________________________________________________ : YES
    JSON HTTP / HTTPS __________________________________________ : YES
    OpenTSDB ___________________________________________________ : YES
    OpenTSDB HTTP / HTTPS ______________________________________ : YES
    All Metrics API ____________________________________________ : YES
    Shell (use metrics in shell scripts) _______________________ : YES
Debug/Developer Features:
    Trace All Netdata Allocations (with charts) ________________ : NO
    Developer Mode (more runtime checks, slower) _______________ : NO

Additional info

No response