Avoid a copy in RPC output

Split up HTTPReply into HTTPReply and HTTPReplyHeader, so that
the message data can be streamed directly.

Also removes a c_str(), which would have prevented binary
output with NUL characters in it.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/rpcprotocol.h b/src/rpcprotocol.h
index 5627077bfb..a088c379d3 100644
--- a/src/rpcprotocol.h
+++ b/src/rpcprotocol.h
@@ -143,6 +143,8 @@ private:
 std::string HTTPPost(const std::string& strMsg, const std::map<std::string,std::string>& mapRequestHeaders);
 std::string HTTPError(int nStatus, bool keepalive,
                       bool headerOnly = false);
+std::string HTTPReplyHeader(int nStatus, bool keepalive, size_t contentLength,
+                      const char *contentType = "application/json");
 std::string HTTPReply(int nStatus, const std::string& strMsg, bool keepalive,
                       bool headerOnly = false,
                       const char *contentType = "application/json");