example compilation issue Ubuntu 16.04 about pistache

[jeffvandyke]

Solved... Would anyone else have guessed that -lnet had to come after the name of the source file? Didn't know that, but I tested a bit and that seems to be the case.

Final command: g++ demo.cpp -lnet -std=c++11 -o demo

Also, for a cmake build, the above command is accomplished by adding target_link_libraries(demo net), again AFTER add_executable(demo demo.cpp).

[oktal]

Hello,

If you look carefully at the compile error, you'll see that you triggered a static assertion:

/usr/local/include/pistache/http.h:758:5: error: static assertion failed: An http handler must be an http prototype, did you forget the HTTP_PROTOTYPE macro ?

You have to use the HTTP_PROTOTYPE macro in your Handler:

struct HelloHandler : public Http::Handler {

    HTTP_PROTOTYPE(HelloHandler)

    void onRequest(const Http::Request& request, Http::ResponseWriter writer) {
                writer.send(Http::Code::Ok, "Hello, World!");

    }

};

I'll update the README

[xens]

Thanks, I'm going further but here's the next issue:

gcc -std=c++11 hello.cc
/tmp/ccVAa4xI.o: In function `main':
hello.cc:(.text+0x13d): undefined reference to `Net::Address::Address(char const*)'
/tmp/ccVAa4xI.o: In function `__static_initialization_and_destruction_0(int, int)':
hello.cc:(.text+0x1b8): undefined reference to `std::ios_base::Init::Init()'
hello.cc:(.text+0x1c7): undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccVAa4xI.o: In function `Async::PromiseBase::~PromiseBase()':
hello.cc:(.text._ZN5Async11PromiseBaseD2Ev[_ZN5Async11PromiseBaseD5Ev]+0x29): undefined reference to `operator delete(void*)'
/tmp/ccVAa4xI.o: In function `Async::PromiseBase::~PromiseBase()':
hello.cc:(.text._ZN5Async11PromiseBaseD0Ev[_ZN5Async11PromiseBaseD5Ev]+0x20): undefined reference to `operator delete(void*)'
/tmp/ccVAa4xI.o: In function `Net::Http::Mime::MediaType::MediaType()':
hello.cc:(.text._ZN3Net4Http4Mime9MediaTypeC2Ev[_ZN3Net4Http4Mime9MediaTypeC5Ev]+0x38): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()'
/tmp/ccVAa4xI.o: In function `Net::Http::Header::Header::~Header()':
hello.cc:(.text._ZN3Net4Http6Header6HeaderD2Ev[_ZN3Net4Http6Header6HeaderD5Ev]+0xd): undefined reference to `vtable for Net::Http::Header::Header'
hello.cc:(.text._ZN3Net4Http6Header6HeaderD2Ev[_ZN3Net4Http6Header6HeaderD5Ev]+0x29): undefined reference to `operator delete(void*)'
/tmp/ccVAa4xI.o: In function `Net::Http::Header::Header::~Header()':
hello.cc:(.text._ZN3Net4Http6Header6HeaderD0Ev[_ZN3Net4Http6Header6HeaderD5Ev]+0x20): undefined reference to `operator delete(void*)'
/tmp/ccVAa4xI.o: In function `Net::Http::Header::Header::Header()':

[oktal]

You should:

1/ Compile with g++, not gcc.
2/ Make sure to link with -lnet

[xens]

I'm certainly missing something, still got errors with g++

g++ -lnet -std=c++11 hello.cc
/tmp/ccxhJsLk.o: In function `main':
hello.cc:(.text+0x13d): undefined reference to `Net::Address::Address(char const*)'
/tmp/ccxhJsLk.o: In function `Net::Http::Header::Header::~Header()':
hello.cc:(.text._ZN3Net4Http6Header6HeaderD2Ev[_ZN3Net4Http6Header6HeaderD5Ev]+0xd): undefined reference to `vtable for Net::Http::Header::Header'
/tmp/ccxhJsLk.o: In function `Net::Http::Header::Header::Header()':
hello.cc:(.text._ZN3Net4Http6Header6HeaderC2Ev[_ZN3Net4Http6Header6HeaderC5Ev]+0x9): undefined reference to `vtable for Net::Http::Header::Header'
/tmp/ccxhJsLk.o: In function `Net::Http::Header::ContentType::ContentType(Net::Http::Mime::MediaType const&)':
hello.cc:(.text._ZN3Net4Http6Header11ContentTypeC2ERKNS0_4Mime9MediaTypeE[_ZN3Net4Http6Header11ContentTypeC5ERKNS0_4Mime9MediaTypeE]+0x1e): undefined reference to `vtable for Net::Http::Header::ContentType'

[oktal]

How did you build and install Pistache ?

[xens]

I followed this guide: http://pistache.io/quickstart#installing-pistache

[jlesech]

I've had the same issue. I had to execute the ldconfig command as root.

[jeffvandyke]

Similar errors for me, even after ldconfig. However, the guide to compile the sources also compiles the examples, and there's a working binary of http_server under pistache/build/examples. Some more investigation needed...

[xens]

same issue as @jeffvandyke running ldconfig doesn't help

[dynahcatq]

same issue here. ldconfig helps but after executing my binary it throws:

terminate called after throwing an instance of 'std::invalid_argument'
  what():  Invalid address
Aborted (core dumped)

any luck?
command to build: sudo g++ test.cpp -o test -std=c++11

UPDATE
Sorry, it's my fault. So I googled the error and I found the reason on StackOverflow: "it means you are giving bad input for what()"

So I look in my code and found out I had a typo at Http::listenAndServe <HelloHandler> ("*:6666");, which I accidentally wrote Http::listenAndServe <HelloHandler> ("*.6666");

Now my code is running like charm, I'm using ubuntu 16.04 LTS on parallel desktop on my Mbp2013

[xens]

@jeffvandyke t-h-a-n-k-y-o-u ! Working as expected with -lnet after the source