Use c-ares library as DNS resolver

.gitignore

@@ -5,4 +5,6 @@ zbx_env*/
 .*KEY_FILE
 .*CA_FILE
 Dockerfiles/*/rhel/secrets/*
-sources/*
+sources/*
+.*.orig
+.*.rej

Dockerfiles/agent/alpine/Dockerfile

@@ -41,6 +41,7 @@ RUN set -eux && \
             tzdata \
             coreutils \
             iputils \
+            c-ares \
             pcre2 \
             libgcc \
             libcurl \

Dockerfiles/agent/centos/Dockerfile

@@ -41,6 +41,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
     set -eux && \
     INSTALL_PKGS="bash \
             iputils \
+            c-ares \
             pcre2 \
             libcurl-minimal \
 #            libmodbus \

Dockerfiles/agent/ol/Dockerfile

@@ -42,6 +42,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
     set -eux && \
     INSTALL_PKGS="bash \
             iputils \
+            c-ares \
             pcre2 \
             libcurl \
 #            libmodbus \

Dockerfiles/agent/rhel/Dockerfile

@@ -61,6 +61,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
     INSTALL_PKGS="bash \
             iputils \
             shadow-utils \
+            c-ares \
             pcre2 \
 #            libmodbus \
             libcurl-minimal \

Dockerfiles/agent/ubuntu/Dockerfile

@@ -44,6 +44,7 @@ RUN --mount=type=cache,target=/var/cache/apt/,sharing=locked \
             tzdata \
             iputils-ping \
             ca-certificates \
+            libcares2 \
             libssl3t64 \
             libcurl4t64 \
             libmodbus5 \

Dockerfiles/build-base/alpine/Dockerfile

@@ -30,6 +30,7 @@ RUN set -eux && \
     INSTALL_PKGS="bash \
             autoconf \
             automake \
+            c-ares-dev \
             coreutils \
             curl \
             curl-dev \

Dockerfiles/build-base/centos/Dockerfile

@@ -27,6 +27,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             bash \
             gcc \
             patch \
+            c-ares-devel \
             pcre2-devel \
             libcurl-devel \
             libevent-devel \

Dockerfiles/build-base/ol/Dockerfile

@@ -29,6 +29,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             gcc \
             go-toolset \
             patch \
+            c-ares-devel \
             pcre2-devel \
             libcurl-devel \
             libevent-devel \

Dockerfiles/build-base/rhel/Dockerfile

@@ -41,6 +41,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             gcc \
             go-toolset \
             patch \
+            c-ares-devel \
             pcre2-devel \
             libcurl-devel \
             libevent-devel \

Dockerfiles/build-base/ubuntu/Dockerfile

@@ -28,6 +28,7 @@ RUN --mount=type=cache,target=/var/cache/apt/,sharing=locked \
             curl \
             gcc \
             libc6-dev \
+            libc-ares-dev \
             libcurl4-openssl-dev \
             libevent-dev \
             libmodbus-dev \

Dockerfiles/build-mysql/alpine/Dockerfile

@@ -84,6 +84,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
             --with-libmodbus \

Dockerfiles/build-mysql/centos/Dockerfile

@@ -84,6 +84,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-mysql/ol/Dockerfile

@@ -84,6 +84,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-mysql/rhel/Dockerfile

@@ -95,6 +95,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-mysql/ubuntu/Dockerfile

@@ -84,6 +84,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
             --with-libmodbus \

Dockerfiles/build-pgsql/alpine/Dockerfile

@@ -86,6 +86,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
             --with-libmodbus \

Dockerfiles/build-pgsql/centos/Dockerfile

@@ -85,6 +85,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-pgsql/ol/Dockerfile

@@ -86,6 +86,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-pgsql/rhel/Dockerfile

@@ -97,6 +97,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-pgsql/ubuntu/Dockerfile

@@ -85,6 +85,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-proxy \
             --enable-server \
             --enable-webservice \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
             --with-libmodbus \

Dockerfiles/build-sqlite3/alpine/Dockerfile

@@ -76,6 +76,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-agent2 \
             --enable-java \
             --enable-proxy \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
             --with-libmodbus \

Dockerfiles/build-sqlite3/centos/Dockerfile

@@ -76,6 +76,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-agent2 \
             --enable-java \
             --enable-proxy \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-sqlite3/ol/Dockerfile

@@ -76,6 +76,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-agent2 \
             --enable-java \
             --enable-proxy \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-sqlite3/rhel/Dockerfile

@@ -87,6 +87,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-agent2 \
             --enable-java \
             --enable-proxy \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
 #            --with-libmodbus \

Dockerfiles/build-sqlite3/ubuntu/Dockerfile

@@ -76,6 +76,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build/ \
             --enable-agent2 \
             --enable-java \
             --enable-proxy \
+            --with-ares \
             --with-ldap \
             --with-libcurl \
             --with-libmodbus \

Dockerfiles/proxy-mysql/alpine/Dockerfile

@@ -53,6 +53,7 @@ RUN set -eux && \
             krb5 \
             iputils \
             openssl \
+            c-ares \
             libcap \
             libcurl \
             libevent \

Dockerfiles/proxy-mysql/centos/Dockerfile

@@ -53,6 +53,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             gzip \
             libssh \
             file-libs \

Dockerfiles/proxy-mysql/ol/Dockerfile

@@ -54,6 +54,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             libssh \
             file-libs \
             fping \

Dockerfiles/proxy-mysql/rhel/Dockerfile

@@ -72,6 +72,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             shadow-utils \
             fping \
             iputils \

Dockerfiles/proxy-mysql/ubuntu/Dockerfile

@@ -58,6 +58,7 @@ RUN --mount=type=cache,target=/var/cache/apt/,sharing=locked \
             ca-certificates \
             fping \
             openssl \
+            libcares2 \
             libcurl4t64 \
             libevent-2.1 \
             libevent-pthreads-2.1 \

Dockerfiles/proxy-sqlite3/alpine/Dockerfile

@@ -52,6 +52,7 @@ RUN set -eux && \
             fping \
             iputils \
             openssl \
+            c-ares \
             libcap \
             libcurl \
             libevent \

Dockerfiles/proxy-sqlite3/centos/Dockerfile

@@ -51,6 +51,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             libssh \
             fping \
             iputils \

Dockerfiles/proxy-sqlite3/ol/Dockerfile

@@ -52,6 +52,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             libssh \
             fping \
             iputils \

Dockerfiles/proxy-sqlite3/rhel/Dockerfile

@@ -70,6 +70,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             shadow-utils \
             fping \
             iputils \

Dockerfiles/proxy-sqlite3/ubuntu/Dockerfile

@@ -56,6 +56,7 @@ RUN --mount=type=cache,target=/var/cache/apt/,sharing=locked \
             ca-certificates \
             fping \
             openssl \
+            libcares2 \
             libcurl4t64 \
             libevent-2.1 \
             libevent-pthreads-2.1 \

Dockerfiles/server-mysql/alpine/Dockerfile

@@ -54,6 +54,7 @@ RUN set -eux && \
             tzdata \
             iputils \
             openssl \
+            c-ares \
             libcap \
             libcurl \
             libevent \

Dockerfiles/server-mysql/centos/Dockerfile

@@ -53,6 +53,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             hostname \
             file-libs \
             iputils \

Dockerfiles/server-mysql/ol/Dockerfile

@@ -54,6 +54,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             hostname \
             file-libs \
             iputils \

Dockerfiles/server-mysql/rhel/Dockerfile

@@ -72,6 +72,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             fping \
             shadow-utils \
             iputils \

Dockerfiles/server-mysql/ubuntu/Dockerfile

@@ -59,6 +59,7 @@ RUN --mount=type=cache,target=/var/cache/apt/,sharing=locked \
             traceroute \
             fping \
             openssl \
+            libcares2 \
             libcurl4t64 \
             libevent-2.1 \
             libevent-pthreads-2.1 \

Dockerfiles/server-pgsql/alpine/Dockerfile

@@ -54,6 +54,7 @@ RUN set -eux && \
             tzdata \
             iputils \
             openssl \
+            c-ares \
             libcap \
             libcurl \
             libevent \

Dockerfiles/server-pgsql/centos/Dockerfile

@@ -55,6 +55,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             hostname \
             nmap \
             krb5-workstation \
+            c-ares \
             iputils \
             traceroute \
             libevent \

Dockerfiles/server-pgsql/ol/Dockerfile

@@ -56,6 +56,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             iputils \
             traceroute \
             libevent \

Dockerfiles/server-pgsql/rhel/Dockerfile

@@ -72,6 +72,7 @@ RUN --mount=type=tmpfs,target=/var/lib/dnf/ \
             traceroute \
             nmap \
             krb5-workstation \
+            c-ares \
             fping \
             shadow-utils \
             iputils \

Dockerfiles/server-pgsql/ubuntu/Dockerfile

@@ -59,6 +59,7 @@ RUN --mount=type=cache,target=/var/cache/apt/,sharing=locked \
             traceroute \
             fping \
             openssl \
+            libcares2 \
             libcurl4t64 \
             libevent-2.1 \
             libevent-pthreads-2.1 \