Fix case of Upgrade: HTTP response to match spec. Chrome was cool with it, but it broke some benchmarking tools.
Fix case of Upgrade: HTTP response to match spec. Chrome was cool with it, but it broke some benchmarking tools.

RobertoMalatesta/seasocks,offa/seasocks,Shin-nn/seasocks,mattgodbolt/seasocks,RobertoMalatesta/seasocks,mattgodbolt/seasocks,Shin-nn/seasocks,mattgodbolt/seasocks,mattgodbolt/seasocks,RobertoMalatesta/seasocks,RobertoMalatesta/seasocks,tet112001/seasocks,RobertoMalatesta/seasocks,offa/seasocks,RobertoMalatesta/seasocks,offa/seasocks,offa/seasocks,tet112001/seasocks,Shin-nn/seasocks,tet112001/seasocks,Shin-nn/seasocks,mattgodbolt/seasocks,Shin-nn/seasocks,Shin-nn/seasocks,tet112001/seasocks,mattgodbolt/seasocks,offa/seasocks,tet112001/seasocks,offa/seasocks,tet112001/seasocks