[BUG] Notification Hubs incompatible with Spring? java.lang.RuntimeException: org.apache.hc.core5.http.ParseException: Invalid protocol version; error at offset 0: <[0x2e][0x2f][0x30][0x31][0x32][0x33][0x34][0x35][0x36][0x37][0x38][0x39][0x3a][0x3b][0x3c][0x3d][0x3e]> about azure-notificationhubs-java-backend

[krevelen]

For me upgrading to a newer httpcomponents version helped, since it is more robust against improper server responses, e.g. using Maven:

<properties>
    <httpcomponents.version>5.2.1</httpcomponents.version>
</properties>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.apache.httpcomponents.client5</groupId>
            <artifactId>httpclient5</artifactId>
            <version>${httpcomponents.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents.core5</groupId>
            <artifactId>httpcore5</artifactId>
            <version>${httpcomponents.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents.core5</groupId>
            <artifactId>httpcore5-h2</artifactId>
            <version>${httpcomponents.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents.core5</groupId>
            <artifactId>httpcore5-reactive</artifactId>
            <version>${httpcomponents.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>