Don't report network errors to Sentry (#2178)

CHANGELOG.md

@@ -1,3 +1,11 @@
+## Unreleased
+
+### Features
+
+### Bug Fixes
+
+- Network errors raised in `Sentry::HTTPTransport` will no longer be reported to Sentry [#2178](https://github.com/getsentry/sentry-ruby/pull/2178)
+
 ## 5.14.0
 
 ### Features

sentry-ruby/lib/sentry/transport/http_transport.rb

@@ -14,6 +14,16 @@ class HTTPTransport < Transport
     RATE_LIMIT_HEADER = "x-sentry-rate-limits"
     USER_AGENT = "sentry-ruby/#{Sentry::VERSION}"
 
+    # The list of errors ::Net::HTTP is known to raise
+    # See https://github.com/ruby/ruby/blob/b0c639f249165d759596f9579fa985cb30533de6/lib/bundler/fetcher.rb#L281-L286
+    HTTP_ERRORS = [
+      Timeout::Error, EOFError, SocketError, Errno::ENETDOWN, Errno::ENETUNREACH,
+      Errno::EINVAL, Errno::ECONNRESET, Errno::ETIMEDOUT, Errno::EAGAIN,
+      Net::HTTPBadResponse, Net::HTTPHeaderSyntaxError, Net::ProtocolError,
+      Zlib::BufError, Errno::EHOSTUNREACH, Errno::ECONNREFUSED
+    ].freeze
+
+
     def initialize(*args)
       super
       @endpoint = @dsn.envelope_endpoint
@@ -58,8 +68,8 @@ def send_data(data)
 
         raise Sentry::ExternalError, error_info
       end
-    rescue SocketError => e
-      raise Sentry::ExternalError.new(e.message)
+    rescue SocketError, *HTTP_ERRORS => e
+      raise Sentry::ExternalError.new(e&.message)
     end
 
     private

sentry-ruby/spec/sentry/transport/http_transport_spec.rb

@@ -265,11 +265,34 @@
     end
   end
 
+  describe "failed to perform the network request" do
+    it "does not report Net::HTTP errors to Sentry" do
+      allow(::Net::HTTP).to receive(:new).and_raise(Errno::ECONNREFUSED)
+      expect do
+        subject.send_data(data)
+      end.to raise_error(Sentry::ExternalError)
+    end
+
+    it "does not report SocketError errors to Sentry" do
+      allow(::Net::HTTP).to receive(:new).and_raise(SocketError.new("socket error"))
+      expect do
+        subject.send_data(data)
+      end.to raise_error(Sentry::ExternalError) 
+    end
+
+    it "reports other errors to Sentry if they are not recognized" do
+      allow(::Net::HTTP).to receive(:new).and_raise(StandardError.new("Booboo"))
+      expect do
+        subject.send_data(data)
+      end.to raise_error(StandardError, /Booboo/)
+    end
+  end
+
   describe "failed request handling" do
     context "receive 4xx responses" do
       let(:fake_response) { build_fake_response("404") }
 
-      it 'raises an error' do
+      it "raises an error" do
         stub_request(fake_response)
 
         expect { subject.send_data(data) }.to raise_error(Sentry::ExternalError, /the server responded with status 404/)
@@ -279,7 +302,7 @@
     context "receive 5xx responses" do
       let(:fake_response) { build_fake_response("500") }
 
-      it 'raises an error' do
+      it "raises an error" do
         stub_request(fake_response)
 
         expect { subject.send_data(data) }.to raise_error(Sentry::ExternalError, /the server responded with status 500/)
@@ -291,7 +314,7 @@
         build_fake_response("500", headers: { 'x-sentry-error' => 'error_in_header' })
       end
 
-      it 'raises an error with header' do
+      it "raises an error with header" do
         stub_request(error_response)
 
         expect { subject.send_data(data) }.to raise_error(Sentry::ExternalError, /error_in_header/)