diff --git a/contrib/opentracing/test/fe/cfg-dd.json b/contrib/opentracing/test/fe/cfg-dd.json
new file mode 100644
index 0000000..84afe56
--- /dev/null
+++ b/contrib/opentracing/test/fe/cfg-dd.json
@@ -0,0 +1,5 @@
+{
+    "service":    "FE",
+    "agent_host": "localhost",
+    "agent_port": 8126
+}
diff --git a/contrib/opentracing/test/fe/cfg-jaeger.yml b/contrib/opentracing/test/fe/cfg-jaeger.yml
new file mode 100644
index 0000000..1365efa
--- /dev/null
+++ b/contrib/opentracing/test/fe/cfg-jaeger.yml
@@ -0,0 +1,34 @@
+service_name:
+    FE
+
+###
+# When using configuration object to instantiate the tracer, the type of
+# sampling can be selected via sampler.type and sampler.param properties.
+# Jaeger libraries support the following samplers:
+#
+#  - Constant (sampler.type=const) sampler always makes the same decision for
+#    all traces.  It either samples all traces (sampler.param=1) or none of
+#    them (sampler.param=0).
+#
+#  - Probabilistic (sampler.type=probabilistic) sampler makes a random sampling
+#    decision with the probability of sampling equal to the value of
+#    sampler.param property.  For example, with sampler.param=0.1 approximately
+#    1 in 10 traces will be sampled.
+#
+#  - Rate Limiting (sampler.type=ratelimiting) sampler uses a leaky bucket rate
+#    limiter to ensure that traces are sampled with a certain constant rate.
+#    For example, when sampler.param=2.0 it will sample requests with the rate
+#    of 2 traces per second.
+#
+#  - Remote (sampler.type=remote, which is also the default) sampler consults
+#    Jaeger agent for the appropriate sampling strategy to use in the current
+#    service.  This allows controlling the sampling strategies in the services
+#    from a central configuration in Jaeger backend, or even dynamically.
+#
+sampler:
+    type: ratelimiting
+    param: 10.0
+
+reporter:
+    logSpans: true
+    localAgentHostPort: localhost:6831
diff --git a/contrib/opentracing/test/fe/cfg-zipkin.json b/contrib/opentracing/test/fe/cfg-zipkin.json
new file mode 100644
index 0000000..1546b10
--- /dev/null
+++ b/contrib/opentracing/test/fe/cfg-zipkin.json
@@ -0,0 +1,4 @@
+{
+    "service_name":   "FE",
+    "collector_host": "localhost"
+}
diff --git a/contrib/opentracing/test/fe/haproxy.cfg b/contrib/opentracing/test/fe/haproxy.cfg
new file mode 100644
index 0000000..bfc0ec9
--- /dev/null
+++ b/contrib/opentracing/test/fe/haproxy.cfg
@@ -0,0 +1,37 @@
+global
+#   nbthread 1
+    maxconn 5000
+    hard-stop-after 10s
+#   log localhost:514 local7 debug
+#   debug
+    stats socket /tmp/haproxy-fe.sock mode 666 level admin
+
+defaults
+    log     global
+    mode    http
+    option  httplog
+    option  dontlognull
+    option  httpclose
+    retries 3
+    maxconn 4000
+    timeout connect 5000
+    timeout client  50000
+    timeout server  50000
+
+listen stats
+    mode http
+    bind *:8001
+    stats uri /
+    stats admin if TRUE
+    stats refresh 10s
+
+frontend ot-test-fe-frontend
+    bind *:10080
+    mode http
+    default_backend servers-backend
+
+    filter opentracing id ot-test-fe config fe/ot.cfg
+
+backend servers-backend
+    mode http
+    server server-1 127.0.0.1:11080
diff --git a/contrib/opentracing/test/fe/ot.cfg b/contrib/opentracing/test/fe/ot.cfg
new file mode 100644
index 0000000..11de828
--- /dev/null
+++ b/contrib/opentracing/test/fe/ot.cfg
@@ -0,0 +1,74 @@
+[ot-test-fe]
+    ot-tracer ot-test-tracer
+        config fe/cfg-jaeger.yml
+        plugin libjaeger_opentracing_plugin-0.5.0.so
+#       log localhost:514 local7 debug
+        option dontlog-normal
+        option hard-errors
+        no option disabled
+        rate-limit 100.0
+
+        scopes client_session_start
+        scopes frontend_tcp_request
+        scopes frontend_http_request
+        scopes backend_tcp_request
+        scopes backend_http_request
+        scopes client_session_end
+
+        scopes server_session_start
+        scopes tcp_response
+        scopes http_response
+        scopes server_session_end
+
+    ot-scope client_session_start
+        span "HAProxy session" root
+            baggage "haproxy_id" var(sess.ot.uuid)
+        span "Client session" child-of "HAProxy session"
+        event on-client-session-start
+
+    ot-scope frontend_tcp_request
+        span "Frontend TCP request" child-of "Client session"
+        event on-frontend-tcp-request
+
+    ot-scope frontend_http_request
+        span "Frontend HTTP request" follows-from "Frontend TCP request"
+            tag "http.method" method
+            tag "http.url" url
+            tag "http.version" str("HTTP/") req.ver
+        finish "Frontend TCP request"
+        event on-frontend-http-request
+
+    ot-scope backend_tcp_request
+        span "Backend TCP request" follows-from "Frontend HTTP request"
+        finish "Frontend HTTP request"
+        event on-backend-tcp-request
+
+    ot-scope backend_http_request
+        span "Backend HTTP request" follows-from "Backend TCP request"
+        finish "Backend TCP request"
+        span "HAProxy session"
+            inject "ot-ctx" use-headers
+        event on-backend-http-request
+
+    ot-scope client_session_end
+        finish "Client session"
+        event on-client-session-end
+
+    ot-scope server_session_start
+        span "Server session" child-of "HAProxy session"
+        finish "Backend HTTP request"
+        event on-server-session-start
+
+    ot-scope tcp_response
+        span "TCP response" child-of "Server session"
+        event on-tcp-response
+
+    ot-scope http_response
+        span "HTTP response" follows-from "TCP response"
+            tag "http.status_code" status
+        finish "TCP response"
+        event on-http-response
+
+    ot-scope server_session_end
+        finish *
+        event on-server-session-end