Error building CurlClient

[shivamsingh262]

I am trying to create a HTTPClient, but get a error building CurlClient provided in samples.

shivam@shivam-PC:~/proxygen/proxygen/httpclient/samples/curl$ g++ -std=c++11 -o my_echo CurlClient.cpp CurlClientMain.cpp -lproxygenhttpserver -lfolly -lglog -lgflags -pthread
/tmp/cc4U1LxS.o: In function CurlService::CurlClient::connectSuccess(proxygen::HTTPUpstreamSession*)': CurlClient.cpp:(.text+0x6cc): undefined reference toproxygen::HTTPUpstreamSession::newTransaction(proxygen::HTTPTransactionHandler_)'
/tmp/cc7ZOsgn.o: In function main': CurlClientMain.cpp:(.text+0x41e): undefined reference toproxygen::HTTPConnector::HTTPConnector(proxygen::HTTPConnector::Callback_, folly::HHWheelTimer_)'
CurlClientMain.cpp:(.text+0x5b4): undefined reference to proxygen::HTTPConnector::connectSSL(folly::EventBase_, folly::SocketAddress const&, std::shared_ptrfolly::SSLContext const&, ssl_session_st_, std::chrono::duration<long, std::ratio<1l, 1000l> >, std::map<folly::AsyncSocket::OptionKey, int, std::less<folly::AsyncSocket::OptionKey>, std::allocator<std::pair<folly::AsyncSocket::OptionKey const, int> > > const&, folly::SocketAddress const&, std::string const&)' CurlClientMain.cpp:(.text+0x60e): undefined reference to proxygen::HTTPConnector::connect(folly::EventBase_, folly::SocketAddress const&, std::chrono::duration<long, std::ratio<1l, 1000l> >, std::map<folly::AsyncSocket::OptionKey, int, std::lessfolly::AsyncSocket::OptionKey, std::allocator<std::pair<folly::AsyncSocket::OptionKey const, int> > > const&, folly::SocketAddress const&)'
CurlClientMain.cpp:(.text+0x631): undefined reference to proxygen::HTTPConnector::~HTTPConnector()' CurlClientMain.cpp:(.text+0x842): undefined reference toproxygen::HTTPConnector::~HTTPConnector()'
collect2: error: ld returned 1 exit status

[w-o-o]

this is a link error. did you try the make file under proxygen/proxygen/httpclient/samples/curl

[shivamsingh262]

I tried make file

shivam@shivam-PC:~/Documents/proxygen/proxygen/httpclient/samples/curl$ make
Making all in .
make[1]: Entering directory /home/shivam/Documents/proxygen/proxygen/httpclient/samples/curl' make[1]: Nothing to be done forall-am'.
make[1]: Leaving directory `/home/shivam/Documents/proxygen/proxygen/httpclient/samples/curl'

I even did 'make clean' followed by 'make'

shivam@shivam-PC:~/Documents/proxygen/proxygen/httpclient/samples/curl$ make
Making all in .
make[1]: Entering directory /home/shivam/Documents/proxygen/proxygen/httpclient/samples/curl' depbase=echo CurlClient.o | sed 's|[^/]$|.deps/&|;s|.o$||';\ g++ -DHAVE_CONFIG_H -I../../../.. -I../../../lib/test/gmock-1.7.0/include -I../../../lib/test/gmock-1.7.0/gtest/include -I/usr/include -DLIBMC_FBTRACE_DISABLE -Wno-missing-field-initializers -Wno-deprecated -O3 -g -W -Wall -Wextra -Wno-unused-parameter -fno-strict-aliasing -std=gnu++0x -g -O2 -MT CurlClient.o -MD -MP -MF $depbase.Tpo -c -o CurlClient.o CurlClient.cpp &&\ mv -f $depbase.Tpo $depbase.Po depbase=echo CurlClientMain.o | sed 's|[^/]$|.deps/&amp;|;s|.o$||';\ g++ -DHAVE_CONFIG_H -I../../../.. -I../../../lib/test/gmock-1.7.0/include -I../../../lib/test/gmock-1.7.0/gtest/include -I/usr/include -DLIBMC_FBTRACE_DISABLE -Wno-missing-field-initializers -Wno-deprecated -O3 -g -W -Wall -Wextra -Wno-unused-parameter -fno-strict-aliasing -std=gnu++0x -g -O2 -MT CurlClientMain.o -MD -MP -MF $depbase.Tpo -c -o CurlClientMain.o CurlClientMain.cpp &&\ mv -f $depbase.Tpo $depbase.Po /bin/bash ../../../libtool --tag=CXX --mode=link g++ -DLIBMC_FBTRACE_DISABLE -Wno-missing-field-initializers -Wno-deprecated -O3 -g -W -Wall -Wextra -Wno-unused-parameter -fno-strict-aliasing -std=gnu++0x -g -O2 -o curl CurlClient.o CurlClientMain.o ../../../lib/libproxygenlib.la -lwangle -lfolly -lz -lssl -lcrypto -lcap -levent -lgflags -lglog -L/usr/lib64 -lpthread -pthread -lfolly -lglog -ldouble-conversion -lboost_system -lboost_thread libtool: link: g++ -DLIBMC_FBTRACE_DISABLE -Wno-missing-field-initializers -Wno-deprecated -O3 -g -W -Wall -Wextra -Wno-unused-parameter -fno-strict-aliasing -std=gnu++0x -g -O2 -o curl CurlClient.o CurlClientMain.o -pthread ../../../lib/.libs/libproxygenlib.a -L/usr/lib64 /usr/local/lib/libfolly.so -lboost_context -lboost_program_options -lboost_filesystem -lboost_regex -lboost_chrono -llzma -lsnappy -llz4 -liberty -ljemalloc -lwangle -lz -lssl -lcrypto -lcap -levent -lgflags -lpthread -lfolly -lglog -ldouble-conversion -lboost_system -lboost_thread -pthread make[1]: Leaving directory/home/shivam/Documents/proxygen/proxygen/httpclient/samples/curl'

But I still have the same issue.

[shivamsingh262]

I was able to resolve this by copying 'HTTPConnector.o' from /lib/http/ directory and 'HTTPUpstreamSession.o' from /lib/http/session/ directory into the /httpclient/samples/curl directory.

Now when I run,

shivam@shivam-PC:~/proxygen/proxygen/httpclient/samples/curl$ g++ -std=c++11 -o my_echo CurlClient.cpp CurlClientMain.cpp HTTPUpstreamSession.o HTTPConnector.o -lproxygenhttpserver -lfolly -lglog -lgflags -pthread

This fixes the linker error, and the client works. There should be a better way though.