source: benchmark/io/http/worker.cfa @ 56911ce

#include "worker.hfa"

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include <iofwd.hfa>

#include "options.hfa"
#include "protocol.hfa"
#include "filecache.hfa"

//=============================================================================================
// Worker Thread
//=============================================================================================
void ?{}( Worker & this ) {
        ((thread&)this){ "Server Worker Thread", *options.clopts.instance };
        this.pipe[0] = -1;
        this.pipe[1] = -1;
        this.done = false;
}

extern "C" {
extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
}

void main( Worker & this ) {
        park();
        /* paranoid */ assert( this.pipe[0] != -1 );
        /* paranoid */ assert( this.pipe[1] != -1 );

        CONNECTION:
        for() {
                if( options.log ) printf("=== Accepting connection ===\n");
                int fd = cfa_accept4( this.[sockfd, addr, addrlen, flags], 0, -1`s, &this.cancel, 0p );
                // int fd = accept4( this.[sockfd, addr, addrlen, flags] );
                if(fd < 0) {
                        if( errno == ECONNABORTED ) break;
                        if( errno == EINVAL && this.done ) break;
                        abort( "accept error: (%d) %s\n", (int)errno, strerror(errno) );
                }

                if( options.log ) printf("=== New connection %d, waiting for requests ===\n", fd);
                REQUEST:
                for() {
                        bool closed;
                        HttpCode code;
                        const char * file;
                        size_t name_size;

                        // Read the http request
                        size_t len = options.socket.buflen;
                        char buffer[len];
                        if( options.log ) printf("=== Reading request ===\n");
                        [code, closed, file, name_size] = http_read(fd, buffer, len, &this.cancel);

                        // if we are done, break out of the loop
                        if( closed ) {
                                if( options.log ) printf("=== Connection closed ===\n");
                                close(fd);
                                continue CONNECTION;
                        }

                        // If this wasn't a request retrun 400
                        if( code != OK200 ) {
                                if( options.log ) printf("=== Invalid Request : %d ===\n", code_val(code));
                                answer_error(fd, code);
                                continue REQUEST;
                        }

                        if(0 == strncmp(file, "plaintext", min(name_size, sizeof("plaintext") ))) {
                                if( options.log ) printf("=== Request for /plaintext ===\n");

                                char text[] = "Hello, World!\n";

                                // Send the header
                                answer_plain(fd, text, sizeof(text));
                        }
                        else {
                                if( options.log ) printf("=== Request for file %.*s ===\n", (int)name_size, file);

                                // Get the fd from the file cache
                                int ans_fd;
                                size_t count;
                                [ans_fd, count] = get_file( file, name_size );

                                // If we can't find the file, return 404
                                if( ans_fd < 0 ) {
                                        if( options.log ) printf("=== File Not Found ===\n");
                                        answer_error(fd, E404);
                                        continue REQUEST;
                                }

                                // Send the header
                                answer_header(fd, count);

                                // Send the desired file
                                sendfile( this.pipe, fd, ans_fd, count);
                        }

                        if( options.log ) printf("=== Answer sent ===\n");
                }
        }
}