public ClientPacket(CodedInputStream stream)
{
m_stream = stream;
// Read header
m_service = m_stream.ReadRawByte();
m_method = m_stream.ReadInt32();
m_requestId = m_stream.ReadInt16();
m_listenerId = 0;
Console.WriteLine("IN: service {0}, method {1:X}, requestId {2}, listenerId {3}", m_service, m_method, m_requestId, m_listenerId);
if (m_service != 0xFE)
m_listenerId = m_stream.ReadRawVarint64();
}
/// <summary>
/// Called by MergeFieldFrom to parse a MessageSet extension.
/// </summary>
private void MergeMessageSetExtensionFromCodedStream(CodedInputStream input,
ExtensionRegistry extensionRegistry, IBuilder builder)
{
MessageDescriptor type = builder.DescriptorForType;
// The wire format for MessageSet is:
// message MessageSet {
// repeated group Item = 1 {
// required int32 typeId = 2;
// required bytes message = 3;
// }
// }
// "typeId" is the extension's field number. The extension can only be
// a message type, where "message" contains the encoded bytes of that
// message.
//
// In practice, we will probably never see a MessageSet item in which
// the message appears before the type ID, or where either field does not
// appear exactly once. However, in theory such cases are valid, so we
// should be prepared to accept them.
int typeId = 0;
ByteString rawBytes = null; // If we encounter "message" before "typeId"
IBuilder subBuilder = null;
FieldDescriptor field = null;
while (true)
{
uint tag = input.ReadTag();
if (tag == 0)
{
break;
}
if (tag == WireFormat.MessageSetTag.TypeID)
{
typeId = input.ReadInt32();
// Zero is not a valid type ID.
if (typeId != 0)
{
ExtensionInfo extension = extensionRegistry[type, typeId];
if (extension != null)
{
field = extension.Descriptor;
subBuilder = extension.DefaultInstance.WeakCreateBuilderForType();
IMessage originalMessage = (IMessage)builder[field];
if (originalMessage != null)
{
subBuilder.WeakMergeFrom(originalMessage);
}
if (rawBytes != null)
{
// We already encountered the message. Parse it now.
// TODO(jonskeet): Check this is okay. It's subtly different from the Java, as it doesn't create an input stream from rawBytes.
// In fact, why don't we just call MergeFrom(rawBytes)? And what about the extension registry?
subBuilder.WeakMergeFrom(rawBytes.CreateCodedInput());
rawBytes = null;
}
}
else
{
// Unknown extension number. If we already saw data, put it
// in rawBytes.
if (rawBytes != null)
{
MergeField(typeId, UnknownField.CreateBuilder().AddLengthDelimited(rawBytes).Build());
rawBytes = null;
}
}
}
}
else if (tag == WireFormat.MessageSetTag.Message)
{
if (typeId == 0)
{
// We haven't seen a type ID yet, so we have to store the raw bytes for now.
rawBytes = input.ReadBytes();
}
else if (subBuilder == null)
{
// We don't know how to parse this. Ignore it.
MergeField(typeId, UnknownField.CreateBuilder().AddLengthDelimited(input.ReadBytes()).Build());
}
else
{
// We already know the type, so we can parse directly from the input
// with no copying. Hooray!
input.ReadMessage(subBuilder, extensionRegistry);
}
}
else
{
// Unknown tag. Skip it.
if (!input.SkipField(tag))
{
break; // end of group
}
}
}
input.CheckLastTagWas(WireFormat.MessageSetTag.ItemEnd);
if (subBuilder != null)
{
builder[field] = subBuilder.WeakBuild();
}
}
/// <summary>
/// Called by MergeFieldFrom to parse a MessageSet extension.
/// </summary>
private void MergeMessageSetExtensionFromCodedStream(CodedInputStream input,
ExtensionRegistry extensionRegistry, IBuilder builder)
{
MessageDescriptor type = builder.DescriptorForType;
// The wire format for MessageSet is:
// message MessageSet {
// repeated group Item = 1 {
// required int32 typeId = 2;
// required bytes message = 3;
// }
// }
// "typeId" is the extension's field number. The extension can only be
// a message type, where "message" contains the encoded bytes of that
// message.
//
// In practice, we will probably never see a MessageSet item in which
// the message appears before the type ID, or where either field does not
// appear exactly once. However, in theory such cases are valid, so we
// should be prepared to accept them.
int typeId = 0;
ByteString rawBytes = null; // If we encounter "message" before "typeId"
IBuilder subBuilder = null;
FieldDescriptor field = null;
while (true) {
uint tag = input.ReadTag();
if (tag == 0) {
break;
}
if (tag == WireFormat.MessageSetTag.TypeID) {
typeId = input.ReadInt32();
// Zero is not a valid type ID.
if (typeId != 0) {
ExtensionInfo extension = extensionRegistry[type, typeId];
if (extension != null) {
field = extension.Descriptor;
subBuilder = extension.DefaultInstance.WeakCreateBuilderForType();
IMessage originalMessage = (IMessage)builder[field];
if (originalMessage != null) {
subBuilder.WeakMergeFrom(originalMessage);
}
if (rawBytes != null) {
// We already encountered the message. Parse it now.
// TODO(jonskeet): Check this is okay. It's subtly different from the Java, as it doesn't create an input stream from rawBytes.
// In fact, why don't we just call MergeFrom(rawBytes)? And what about the extension registry?
subBuilder.WeakMergeFrom(rawBytes.CreateCodedInput());
rawBytes = null;
}
} else {
// Unknown extension number. If we already saw data, put it
// in rawBytes.
if (rawBytes != null) {
MergeField(typeId, UnknownField.CreateBuilder().AddLengthDelimited(rawBytes).Build());
rawBytes = null;
}
}
}
} else if (tag == WireFormat.MessageSetTag.Message) {
if (typeId == 0) {
// We haven't seen a type ID yet, so we have to store the raw bytes for now.
rawBytes = input.ReadBytes();
} else if (subBuilder == null) {
// We don't know how to parse this. Ignore it.
MergeField(typeId, UnknownField.CreateBuilder().AddLengthDelimited(input.ReadBytes()).Build());
} else {
// We already know the type, so we can parse directly from the input
// with no copying. Hooray!
input.ReadMessage(subBuilder, extensionRegistry);
}
} else {
// Unknown tag. Skip it.
if (!input.SkipField(tag)) {
break; // end of group
}
}
}
input.CheckLastTagWas(WireFormat.MessageSetTag.ItemEnd);
if (subBuilder != null) {
builder[field] = subBuilder.WeakBuild();
}
}
public void TestCodedInputOutputPosition()
{
byte[] content = new byte[110];
for (int i = 0; i < content.Length; i++)
{
content[i] = (byte)i;
}
byte[] child = new byte[120];
{
MemoryStream ms = new MemoryStream(child);
CodedOutputStream cout = CodedOutputStream.CreateInstance(ms, 20);
// Field 11: numeric value: 500
cout.WriteTag(11, WireFormat.WireType.Varint);
Assert.AreEqual(1, cout.Position);
cout.WriteInt32NoTag(500);
Assert.AreEqual(3, cout.Position);
//Field 12: length delimited 120 bytes
cout.WriteTag(12, WireFormat.WireType.LengthDelimited);
Assert.AreEqual(4, cout.Position);
cout.WriteBytesNoTag(ByteString.CopyFrom(content));
Assert.AreEqual(115, cout.Position);
// Field 13: fixed numeric value: 501
cout.WriteTag(13, WireFormat.WireType.Fixed32);
Assert.AreEqual(116, cout.Position);
cout.WriteSFixed32NoTag(501);
Assert.AreEqual(120, cout.Position);
cout.Flush();
}
byte[] bytes = new byte[130];
{
CodedOutputStream cout = CodedOutputStream.CreateInstance(bytes);
// Field 1: numeric value: 500
cout.WriteTag(1, WireFormat.WireType.Varint);
Assert.AreEqual(1, cout.Position);
cout.WriteInt32NoTag(500);
Assert.AreEqual(3, cout.Position);
//Field 2: length delimited 120 bytes
cout.WriteTag(2, WireFormat.WireType.LengthDelimited);
Assert.AreEqual(4, cout.Position);
cout.WriteBytesNoTag(ByteString.CopyFrom(child));
Assert.AreEqual(125, cout.Position);
// Field 3: fixed numeric value: 500
cout.WriteTag(3, WireFormat.WireType.Fixed32);
Assert.AreEqual(126, cout.Position);
cout.WriteSFixed32NoTag(501);
Assert.AreEqual(130, cout.Position);
cout.Flush();
}
//Now test Input stream:
{
CodedInputStream cin = CodedInputStream.CreateInstance(new MemoryStream(bytes), new byte[50]);
uint tag;
int intValue = 0;
string ignore;
Assert.AreEqual(0, cin.Position);
// Field 1:
Assert.IsTrue(cin.ReadTag(out tag, out ignore) && tag >> 3 == 1);
Assert.AreEqual(1, cin.Position);
Assert.IsTrue(cin.ReadInt32(ref intValue) && intValue == 500);
Assert.AreEqual(3, cin.Position);
//Field 2:
Assert.IsTrue(cin.ReadTag(out tag, out ignore) && tag >> 3 == 2);
Assert.AreEqual(4, cin.Position);
uint childlen = cin.ReadRawVarint32();
Assert.AreEqual(120u, childlen);
Assert.AreEqual(5, cin.Position);
int oldlimit = cin.PushLimit((int)childlen);
Assert.AreEqual(5, cin.Position);
// Now we are reading child message
{
// Field 11: numeric value: 500
Assert.IsTrue(cin.ReadTag(out tag, out ignore) && tag >> 3 == 11);
Assert.AreEqual(6, cin.Position);
Assert.IsTrue(cin.ReadInt32(ref intValue) && intValue == 500);
Assert.AreEqual(8, cin.Position);
//Field 12: length delimited 120 bytes
Assert.IsTrue(cin.ReadTag(out tag, out ignore) && tag >> 3 == 12);
Assert.AreEqual(9, cin.Position);
ByteString bstr = null;
Assert.IsTrue(cin.ReadBytes(ref bstr) && bstr.Length == 110 && bstr.ToByteArray()[109] == 109);
Assert.AreEqual(120, cin.Position);
// Field 13: fixed numeric value: 501
Assert.IsTrue(cin.ReadTag(out tag, out ignore) && tag >> 3 == 13);
// ROK - Previously broken here, this returned 126 failing to account for bufferSizeAfterLimit
Assert.AreEqual(121, cin.Position);
Assert.IsTrue(cin.ReadSFixed32(ref intValue) && intValue == 501);
Assert.AreEqual(125, cin.Position);
Assert.IsTrue(cin.IsAtEnd);
}
cin.PopLimit(oldlimit);
Assert.AreEqual(125, cin.Position);
// Field 3: fixed numeric value: 501
Assert.IsTrue(cin.ReadTag(out tag, out ignore) && tag >> 3 == 3);
Assert.AreEqual(126, cin.Position);
Assert.IsTrue(cin.ReadSFixed32(ref intValue) && intValue == 501);
Assert.AreEqual(130, cin.Position);
Assert.IsTrue(cin.IsAtEnd);
}
}
