Test receiving multicast packets over UDP

PiperOrigin-RevId: 304098611

1 files changed, 22 insertions, 8 deletions

diff --git a/test/packetimpact/proto/posix_server.proto b/test/packetimpact/proto/posix_server.proto
index 026876fc2..53ec49410 100644
--- a/test/packetimpact/proto/posix_server.proto
+++ b/test/packetimpact/proto/posix_server.proto
@@ -24,7 +24,7 @@ message SocketRequest {
 
 message SocketResponse {
   int32 fd = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
 }
 
 message SockaddrIn {
@@ -55,7 +55,7 @@ message BindRequest {
 
 message BindResponse {
   int32 ret = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
 }
 
 message GetSockNameRequest {
@@ -64,7 +64,7 @@ message GetSockNameRequest {
 
 message GetSockNameResponse {
   int32 ret = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
   Sockaddr addr = 3;
 }
 
@@ -75,7 +75,7 @@ message ListenRequest {
 
 message ListenResponse {
   int32 ret = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
 }
 
 message AcceptRequest {
@@ -84,7 +84,7 @@ message AcceptRequest {
 
 message AcceptResponse {
   int32 fd = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
   Sockaddr addr = 3;
 }
 
@@ -97,7 +97,7 @@ message SetSockOptRequest {
 
 message SetSockOptResponse {
   int32 ret = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
 }
 
 message Timeval {
@@ -114,7 +114,7 @@ message SetSockOptTimevalRequest {
 
 message SetSockOptTimevalResponse {
   int32 ret = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
 }
 
 message CloseRequest {
@@ -123,7 +123,19 @@ message CloseRequest {
 
 message CloseResponse {
   int32 ret = 1;
-  int32 errno_ = 2;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
+}
+
+message RecvRequest {
+  int32 sockfd = 1;
+  int32 len = 2;
+  int32 flags = 3;
+}
+
+message RecvResponse {
+  int32 ret = 1;
+  int32 errno_ = 2;  // "errno" may fail to compile in c++.
+  bytes buf = 3;
 }
 
 service Posix {
@@ -147,4 +159,6 @@ service Posix {
       returns (SetSockOptTimevalResponse);
   // Call close() on the DUT.
   rpc Close(CloseRequest) returns (CloseResponse);
+  // Call recv() on the DUT.
+  rpc Recv(RecvRequest) returns (RecvResponse);
 }