Howto
Introduction
This is a collection of small howtos. Most experienced C++ developers would find the official documentation enough, but some less experienced developers might find the following useful.
How to compile the templates with cmake?
First, create your CMakeLists.txt as you would for a simple application (see cmake documentation or see the cmake file of wikipp).
In order for cmake to compile the template whenever your .tmpl files have changed and only then, add the following to your CMakeList.txt file:
set(TEMPLATES my_view.tmpl)
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/my_view.cpp
COMMAND cppcms_tmpl_cc
${TEMPLATES}
-o ${CMAKE_CURRENT_BINARY_DIR}/my_view.cpp
${TEMPLATES}
DEPENDS ${TEMPLATES})
See also the discussion at Stack overflow.
How to activate CppCMS logging?
Add the following lines to config.js (CppCMS configuration file):
"logging" : {
"level" : "debug"
}
debug is the more verbose logging level.
You can now generate debug messages by including the following lines in your application:
#include <booster/log.h>
...
BOOSTER_DEBUG("application_name") << "message";
See also logging.
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<h1>include <iostream></h1>
<h1>include <string></h1>
<h1>include <cstring></h1>
include <sys/socket.h>
include <netinet/in.h>
include <unistd.h>
int main() {
int server_fd, client_fd;
struct sockaddr_in address;
int addrlen = sizeof(address);
// HTML content to be served
std::string html =
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n\r\n"
"<!DOCTYPE html>"
"<html>"
"<head><title>My C++ Web</title></head>"
"<body><h1>Welcome to a Simple Web Page!</h1><p>This is served from C++.</p></body>"
"</html>";
// Create socket
server_fd = socket(AF_INET, SOCK_STREAM, 0);
if (server_fd == 0) {
perror("socket failed");
exit(EXIT_FAILURE);
}
// Bind
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(8080);
if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
perror("bind failed");
exit(EXIT_FAILURE);
}
// Listen
if (listen(server_fd, 3) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
std::cout << "Server is running on http://localhost:8080" << std::endl;
while (true) {
// Accept client
client_fd = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen);
if (client_fd < 0) {
perror("accept");
exit(EXIT_FAILURE);
}
char buffer[3000] = {0};
read(client_fd, buffer, 3000); // Read client request
std::cout << "Request:\n" << buffer << std::endl;
// Send response
send(client_fd, html.c_str(), html.size(), 0);
close(client_fd); // Close connection
}
return 0;
}
<h1>include <iostream></h1>
<h1>include <string></h1>
<h1>include <cstring></h1>
include <sys/socket.h>
include <netinet/in.h>
include <unistd.h>
int main() {
int server_fd, client_fd;
struct sockaddr_in address;
int addrlen = sizeof(address);
// HTML content to be served
std::string html =
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n\r\n"
"<!DOCTYPE html>"
"<html>"
"<head><title>My C++ Web</title></head>"
"<body><h1>Welcome to a Simple Web Page!</h1><p>This is served from C++.</p></body>"
"</html>";
// Create socket
server_fd = socket(AF_INET, SOCK_STREAM, 0);
if (server_fd == 0) {
perror("socket failed");
exit(EXIT_FAILURE);
}
// Bind
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(8080);
if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
perror("bind failed");
exit(EXIT_FAILURE);
}
// Listen
if (listen(server_fd, 3) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
std::cout << "Server is running on http://localhost:8080" << std::endl;
while (true) {
// Accept client
client_fd = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen);
if (client_fd < 0) {
perror("accept");
exit(EXIT_FAILURE);
}
char buffer[3000] = {0};
read(client_fd, buffer, 3000); // Read client request
std::cout << "Request:\n" << buffer << std::endl;
// Send response
send(client_fd, html.c_str(), html.size(), 0);
close(client_fd); // Close connection
}
return 0;
}
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